diff --git a/src/component/transform/filterTransform.ts b/src/component/transform/filterTransform.ts
index d674f5404dc23b6b1e7a61b34fc2a53cf5aacd8d..627f3724c010506985742b3053749aba11b53fa3 100644
--- a/src/component/transform/filterTransform.ts
+++ b/src/component/transform/filterTransform.ts
@@ -17,8 +17,10 @@
 * under the License.
 */
 
-import { DataTransformOption, ExternalDataTransform } from '../../data/helper/transform';
-import { DimensionIndex, OptionDataItem } from '../../util/types';
+import {
+    DataTransformOption, ExternalDataTransform, DataTransformDataItem, ExternalDataTransformResultItem
+} from '../../data/helper/transform';
+import { DimensionIndex } from '../../util/types';
 import { parseConditionalExpression, ConditionalExpressionOption } from '../../util/conditionalExpression';
 import { hasOwn, createHashMap } from 'zrender/src/core/util';
 import { makePrintable, throwError } from '../../util/log';
@@ -41,7 +43,7 @@ export const filterTransform: ExternalDataTransform<FilterTransformOption> = {
         // is better than return the entire raw soruce for user to find the mistake.
 
         const upstream = params.upstream;
-        let rawItem: OptionDataItem;
+        let rawItem: DataTransformDataItem;
 
         const condition = parseConditionalExpression<{ dimIdx: DimensionIndex }>(params.config, {
 
@@ -84,12 +86,12 @@ export const filterTransform: ExternalDataTransform<FilterTransformOption> = {
         for (let i = 0, len = upstream.count(); i < len; i++) {
             rawItem = upstream.getRawDataItem(i);
             if (condition.evaluate()) {
-                resultData.push(rawItem);
+                resultData.push(rawItem as any);
             }
         }
 
         return {
-            data: resultData
+            data: resultData as ExternalDataTransformResultItem['data']
         };
     }
 };
diff --git a/src/component/transform/sortTransform.ts b/src/component/transform/sortTransform.ts
index a97382b1c1b96c587baa0af55737fb4557cee2a1..dbe246c6933ef16c3d4c9869ad06b01c3000af35 100644
--- a/src/component/transform/sortTransform.ts
+++ b/src/component/transform/sortTransform.ts
@@ -17,7 +17,9 @@
 * under the License.
 */
 
-import { DataTransformOption, ExternalDataTransform } from '../../data/helper/transform';
+import {
+    DataTransformOption, ExternalDataTransform, ExternalDataTransformResultItem
+} from '../../data/helper/transform';
 import {
     DimensionLoose, DimensionIndex, OptionDataValue, SOURCE_FORMAT_ARRAY_ROWS, SOURCE_FORMAT_OBJECT_ROWS
 } from '../../util/types';
@@ -199,7 +201,7 @@ export const sortTransform: ExternalDataTransform<SortTransformOption> = {
         });
 
         return {
-            data: resultData
+            data: resultData as ExternalDataTransformResultItem['data']
         };
     }
 };
diff --git a/src/data/Source.ts b/src/data/Source.ts
index a17e871690242af656b5b2e11aeb4be5ffe3cb18..f5516e666929ade3d9585adf42621b95da8f7259 100644
--- a/src/data/Source.ts
+++ b/src/data/Source.ts
@@ -287,7 +287,10 @@ function makeEncodeDefine(
         : null;
 }
 
-function detectSourceFormat(data: DatasetOption['source']): SourceFormat {
+/**
+ * Note: An empty array will be detected as `SOURCE_FORMAT_ARRAY_ROWS`.
+ */
+export function detectSourceFormat(data: DatasetOption['source']): SourceFormat {
     let sourceFormat: SourceFormat = SOURCE_FORMAT_UNKNOWN;
 
     if (isTypedArray(data)) {
@@ -323,9 +326,6 @@ function detectSourceFormat(data: DatasetOption['source']): SourceFormat {
             }
         }
     }
-    else if (data != null) {
-        throw new Error('Invalid data');
-    }
 
     return sourceFormat;
 }
diff --git a/src/data/helper/sourceHelper.ts b/src/data/helper/sourceHelper.ts
index 2406d0f38d47a525732b3398cafef3c249ebd786..0d17f5c589acca1a4e94968e386672d7b01d1975 100644
--- a/src/data/helper/sourceHelper.ts
+++ b/src/data/helper/sourceHelper.ts
@@ -82,31 +82,6 @@ export function resetSourceDefaulter(ecModel: GlobalModel): void {
     innerGlobalModel(ecModel).datasetMap = createHashMap();
 }
 
-// See [DIMENSION_INHERIT_RULE] in `sourceManager.ts`.
-export function inheritSourceMetaRawOption(
-    upstream: Source, // Can be null/undefined
-    newMetaRawOption: SourceMetaRawOption // Can NOT be null/undefined
-): SourceMetaRawOption {
-    const parentMetaRawOption = upstream ? upstream.metaRawOption : null;
-    const seriesLayoutBy = retrieve2(
-        newMetaRawOption.seriesLayoutBy,
-        parentMetaRawOption ? parentMetaRawOption.seriesLayoutBy : null
-    );
-    // sourceHeader and dimensions should use the "detected result" rather than "meta raw".
-    // Consider the case: transform return only "data" but no "dimensions", that should means inherit
-    // dimensions definition from upstream. But the returned data does not contain header line and can not
-    // be used as dimension-detection. In this case we should use "detected dimensions" of upstream directly.
-    const sourceHeader = retrieve2(
-        newMetaRawOption.sourceHeader,
-        upstream ? upstream.startIndex : null
-    );
-    const dimensions = retrieve2(
-        newMetaRawOption.dimensions,
-        upstream ? upstream.dimensionsDefine : null
-    );
-    return { seriesLayoutBy, sourceHeader, dimensions };
-}
-
 /**
  * [The strategy of the arrengment of data dimensions for dataset]:
  * "value way": all axes are non-category axes. So series one by one take
diff --git a/src/data/helper/sourceManager.ts b/src/data/helper/sourceManager.ts
index 1e88f7b4d1e4c5adec2fa3a56cc4347e58869872..9b3dba42e6c5c3c401f7728136ccde796f1a12b8 100644
--- a/src/data/helper/sourceManager.ts
+++ b/src/data/helper/sourceManager.ts
@@ -19,7 +19,7 @@
 
 import { DatasetModel } from '../../component/dataset';
 import SeriesModel from '../../model/Series';
-import { setAsPrimitive, map, isTypedArray, assert, each } from 'zrender/src/core/util';
+import { setAsPrimitive, map, isTypedArray, assert, each, retrieve2 } from 'zrender/src/core/util';
 import { SourceMetaRawOption, Source, createSource, cloneSourceShallow } from '../Source';
 import {
     SeriesEncodableModel, OptionSourceData,
@@ -27,8 +27,7 @@ import {
     SourceFormat, SeriesLayoutBy, OptionSourceHeader, DimensionDefinitionLoose
 } from '../../util/types';
 import {
-    querySeriesUpstreamDatasetModel, queryDatasetUpstreamDatasetModels,
-    inheritSourceMetaRawOption
+    querySeriesUpstreamDatasetModel, queryDatasetUpstreamDatasetModels
 } from './sourceHelper';
 import { applyDataTransform } from './transform';
 
@@ -192,7 +191,7 @@ export class SourceManager {
             const seriesModel = sourceHost as SeriesEncodableModel;
             let data;
             let sourceFormat: SourceFormat;
-            let upSource;
+            let upSource: Source;
 
             // Has upstream dataset
             if (hasUpstream) {
@@ -212,14 +211,27 @@ export class SourceManager {
             }
 
             // See [REQUIREMENT_MEMO], merge settings on series and parent dataset if it is root.
-            const thisMetaRawOption = inheritSourceMetaRawOption(
-                upSource,
-                this._getSourceMetaRawOption()
+            const newMetaRawOption = this._getSourceMetaRawOption();
+            const upMetaRawOption = upSource ? upSource.metaRawOption : null;
+            const seriesLayoutBy = retrieve2(
+                newMetaRawOption.seriesLayoutBy,
+                upMetaRawOption ? upMetaRawOption.seriesLayoutBy : null
+            );
+            const sourceHeader = retrieve2(
+                newMetaRawOption.sourceHeader,
+                upMetaRawOption ? upMetaRawOption.sourceHeader : null
+            );
+            // Note here we should not use `upSource.dimensionsDefine`. Consider the case:
+            // `upSource.dimensionsDefine` is detected by `seriesLayoutBy: 'column'`,
+            // but series need `seriesLayoutBy: 'row'`.
+            const dimensions = retrieve2(
+                newMetaRawOption.dimensions,
+                upMetaRawOption ? upMetaRawOption.dimensions : null
             );
 
             resultSourceList = [createSource(
                 data,
-                thisMetaRawOption,
+                { seriesLayoutBy, sourceHeader, dimensions },
                 sourceFormat,
                 seriesModel.get('encode', true)
             )];
diff --git a/src/data/helper/transform.ts b/src/data/helper/transform.ts
index 349e9857d8f4c3daa310e98d43e3cc14a0c7e1ad..43625cd917c66de1dc6bc8bc0a071c9dae44d5e6 100644
--- a/src/data/helper/transform.ts
+++ b/src/data/helper/transform.ts
@@ -18,26 +18,22 @@
 */
 
 import {
-    Dictionary, OptionSourceData, DimensionDefinitionLoose,
-    SourceFormat, DimensionDefinition, OptionDataItem, DimensionIndex,
+    Dictionary, DimensionDefinitionLoose,
+    SourceFormat, DimensionDefinition, DimensionIndex,
     OptionDataValue, DimensionLoose, DimensionName, ParsedValue,
     SERIES_LAYOUT_BY_COLUMN, SOURCE_FORMAT_OBJECT_ROWS, SOURCE_FORMAT_ARRAY_ROWS,
     OptionSourceDataObjectRows, OptionSourceDataArrayRows
 } from '../../util/types';
 import { normalizeToArray } from '../../util/model';
 import {
-    createHashMap, bind, each, hasOwn, map, clone, isObject,
-    isArrayLike,
-    extend,
-    isArray
+    createHashMap, bind, each, hasOwn, map, clone, isObject, extend
 } from 'zrender/src/core/util';
 import {
     getRawSourceItemGetter, getRawSourceDataCounter, getRawSourceValueGetter
 } from './dataProvider';
 import { parseDataValue } from './dataValueHelper';
-import { inheritSourceMetaRawOption } from './sourceHelper';
 import { consoleLog, makePrintable, throwError } from '../../util/log';
-import { createSource, Source } from '../Source';
+import { createSource, Source, SourceMetaRawOption, detectSourceFormat } from '../Source';
 
 
 export type PipedDataTransformOption = DataTransformOption[];
@@ -71,7 +67,7 @@ export interface ExternalDataTransformResultItem {
     /**
      * If `data` is null/undefined, inherit upstream data.
      */
-    data: OptionSourceData;
+    data: OptionSourceDataArrayRows | OptionSourceDataObjectRows;
     /**
      * A `transform` can optionally return a dimensions definition.
      * The rule:
@@ -83,6 +79,7 @@ export interface ExternalDataTransformResultItem {
      */
     dimensions?: DimensionDefinitionLoose[];
 }
+export type DataTransformDataItem = ExternalDataTransformResultItem['data'][number];
 export interface ExternalDimensionDefinition extends Partial<DimensionDefinition> {
     // Mandatory
     index: DimensionIndex;
@@ -110,7 +107,7 @@ export class ExternalSource {
         throw new Error('not supported');
     }
 
-    getRawDataItem(dataIndex: number): OptionDataItem {
+    getRawDataItem(dataIndex: number): DataTransformDataItem {
         // Only built-in transform available.
         throw new Error('not supported');
     }
@@ -152,7 +149,7 @@ export class ExternalSource {
         return;
     }
 
-    retrieveValueFromItem(dataItem: OptionDataItem, dimIndex: DimensionIndex): OptionDataValue {
+    retrieveValueFromItem(dataItem: DataTransformDataItem, dimIndex: DimensionIndex): OptionDataValue {
         return;
     }
 
@@ -169,6 +166,17 @@ function createExternalSource(internalSource: Source, externalTransform: Externa
     const sourceFormat = extSource.sourceFormat = internalSource.sourceFormat;
     const sourceHeaderCount = internalSource.startIndex;
 
+    let errMsg = '';
+    if (internalSource.seriesLayoutBy !== SERIES_LAYOUT_BY_COLUMN) {
+        // For the logic simplicity in transformer, only 'culumn' is
+        // supported in data transform. Otherwise, the `dimensionsDefine`
+        // might be detected by 'row', which probably confuses users.
+        if (__DEV__) {
+            errMsg = '`seriesLayoutBy` of upstream dataset can only be "column" in data transform.';
+        }
+        throwError(errMsg);
+    }
+
     // [MEMO]
     // Create a new dimensions structure for exposing.
     // Do not expose all dimension info to users directly.
@@ -219,7 +227,7 @@ function createExternalSource(internalSource: Source, externalTransform: Externa
     const rawItemGetter = getRawSourceItemGetter(sourceFormat, SERIES_LAYOUT_BY_COLUMN);
     if (externalTransform.__isBuiltIn) {
         extSource.getRawDataItem = function (dataIndex) {
-            return rawItemGetter(data, sourceHeaderCount, dimensions, dataIndex);
+            return rawItemGetter(data, sourceHeaderCount, dimensions, dataIndex) as DataTransformDataItem;
         };
         extSource.getRawData = bind(getRawData, null, internalSource);
     }
@@ -231,7 +239,7 @@ function createExternalSource(internalSource: Source, externalTransform: Externa
 
     const rawValueGetter = getRawSourceValueGetter(sourceFormat);
     extSource.retrieveValue = function (dataIndex, dimIndex) {
-        const rawItem = rawItemGetter(data, sourceHeaderCount, dimensions, dataIndex);
+        const rawItem = rawItemGetter(data, sourceHeaderCount, dimensions, dataIndex) as DataTransformDataItem;
         return retrieveValueFromItem(rawItem, dimIndex);
     };
     const retrieveValueFromItem = extSource.retrieveValueFromItem = function (dataItem, dimIndex) {
@@ -253,34 +261,31 @@ function createExternalSource(internalSource: Source, externalTransform: Externa
 
 function getRawData(upstream: Source): Source['data'] {
     const sourceFormat = upstream.sourceFormat;
-    const data = upstream.data;
 
-    if (sourceFormat === SOURCE_FORMAT_ARRAY_ROWS
-        || sourceFormat === SOURCE_FORMAT_OBJECT_ROWS
-        || !data
-        || (isArray(data) && !data.length)
-    ) {
-        return upstream.data;
+    if (!isSupportedSourceFormat(sourceFormat)) {
+        let errMsg = '';
+        if (__DEV__) {
+            errMsg = '`getRawData` is not supported in source format ' + sourceFormat;
+        }
+        throwError(errMsg);
     }
 
-    let errMsg = '';
-    if (__DEV__) {
-        errMsg = '`getRawData` is not supported in source format ' + sourceFormat;
-    }
-    throwError(errMsg);
+    return upstream.data;
 }
 
 function cloneRawData(upstream: Source): Source['data'] {
     const sourceFormat = upstream.sourceFormat;
     const data = upstream.data;
 
-    if (!data) {
-        return data;
-    }
-    else if (isArray(data) && !data.length) {
-        return [];
+    if (!isSupportedSourceFormat(sourceFormat)) {
+        let errMsg = '';
+        if (__DEV__) {
+            errMsg = '`cloneRawData` is not supported in source format ' + sourceFormat;
+        }
+        throwError(errMsg);
     }
-    else if (sourceFormat === SOURCE_FORMAT_ARRAY_ROWS) {
+
+    if (sourceFormat === SOURCE_FORMAT_ARRAY_ROWS) {
         const result = [];
         for (let i = 0, len = data.length; i < len; i++) {
             // Not strictly clone for performance
@@ -442,39 +447,91 @@ function applySingleDataTransform(
         }
     }
 
-    return map(resultList, function (result) {
+    return map(resultList, function (result, resultIndex) {
         let errMsg = '';
+
         if (!isObject(result)) {
             if (__DEV__) {
                 errMsg = 'A transform should not return some empty results.';
             }
             throwError(errMsg);
         }
-        let resultData = result.data;
-        if (resultData != null) {
-            if (!isObject(resultData) && !isArrayLike(resultData)) {
-                if (__DEV__) {
-                    errMsg = 'Result data should be object or array in data transform.';
-                }
-                throwError(errMsg);
+
+        if (!result.data) {
+            if (__DEV__) {
+                errMsg = 'Transform result data should be not be null or undefined';
             }
+            throwError(errMsg);
         }
-        else {
-            // Inherit from upstream[0]
-            resultData = upSourceList[0].data;
+
+        const sourceFormat = detectSourceFormat(result.data);
+        if (!isSupportedSourceFormat(sourceFormat)) {
+            if (__DEV__) {
+                errMsg = 'Transform result data should be array rows or object rows.';
+            }
+            throwError(errMsg);
         }
 
-        const resultMetaRawOption = inheritSourceMetaRawOption(
-            upSourceList[0],
-            {
+        let resultMetaRawOption: SourceMetaRawOption;
+        const firstUpSource = upSourceList[0];
+
+        /**
+         * Intuitively, the end users known the content of the original `dataset.source`,
+         * calucating the transform result in mind.
+         * Suppose the original `dataset.source` is:
+         * ```js
+         * [
+         *     ['product', '2012', '2013', '2014', '2015'],
+         *     ['AAA', 41.1, 30.4, 65.1, 53.3],
+         *     ['BBB', 86.5, 92.1, 85.7, 83.1],
+         *     ['CCC', 24.1, 67.2, 79.5, 86.4]
+         * ]
+         * ```
+         * The dimension info have to be detected from the source data.
+         * Some of the transformers (like filter, sort) will follow the dimension info
+         * of upstream, while others use new dimensions (like aggregate).
+         * Transformer can output a field `dimensions` to define the its own output dimensions.
+         * We also allow transformers to ignore the output `dimensions` field, and
+         * inherit the upstream dimensions definition. It can reduce the burden of handling
+         * dimensions in transformers.
+         *
+         * See also [DIMENSION_INHERIT_RULE] in `sourceManager.ts`.
+         */
+        if (
+            firstUpSource
+            && resultIndex === 0
+            // If transformer returns `dimensions`, it means that the transformer has different
+            // dimensions definitions. We do not inherit anything from upstream.
+            && !result.dimensions
+        ) {
+            const startIndex = firstUpSource.startIndex;
+            // We copy the header of upstream to the result becuase:
+            // (1) The returned data always does not contain header line and can not be used
+            // as dimension-detection. In this case we can not use "detected dimensions" of
+            // upstream directly, because it might be detected based on different `seriesLayoutBy`.
+            // (2) We should support that the series read the upstream source in `seriesLayoutBy: 'row'`.
+            // So the original detected header should be add to the result, otherwise they can not be read.
+            if (startIndex) {
+                result.data = (firstUpSource.data as []).slice(0, startIndex)
+                    .concat(result.data as []);
+            }
+
+            resultMetaRawOption = {
+                seriesLayoutBy: SERIES_LAYOUT_BY_COLUMN,
+                sourceHeader: startIndex,
+                dimensions: firstUpSource.metaRawOption.dimensions
+            };
+        }
+        else {
+            resultMetaRawOption = {
                 seriesLayoutBy: SERIES_LAYOUT_BY_COLUMN,
                 sourceHeader: 0,
                 dimensions: result.dimensions
-            }
-        );
+            };
+        }
 
         return createSource(
-            resultData,
+            result.data,
             resultMetaRawOption,
             null,
             null
@@ -482,3 +539,6 @@ function applySingleDataTransform(
     });
 }
 
+function isSupportedSourceFormat(sourceFormat: SourceFormat): boolean {
+    return sourceFormat === SOURCE_FORMAT_ARRAY_ROWS || sourceFormat === SOURCE_FORMAT_OBJECT_ROWS;
+}
diff --git a/test/legend-feature.html b/test/legend-feature.html
new file mode 100644
index 0000000000000000000000000000000000000000..4ce563a2c6ce4cb0958da21028fc32448065924d
--- /dev/null
+++ b/test/legend-feature.html
@@ -0,0 +1,105 @@
+<!DOCTYPE html>
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+
+<html>
+    <head>
+        <meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <script src="lib/esl.js"></script>
+        <script src="lib/config.js"></script>
+        <script src="lib/jquery.min.js"></script>
+        <script src="lib/facePrint.js"></script>
+        <script src="lib/testHelper.js"></script>
+        <!-- <script src="ut/lib/canteen.js"></script> -->
+        <link rel="stylesheet" href="lib/reset.css" />
+    </head>
+    <body>
+        <style>
+        </style>
+
+
+
+        <div id="main0"></div>
+
+
+
+
+
+
+
+
+
+        <script>
+        require(['echarts'/*, 'map/js/china' */], function (echarts) {
+
+
+            option = {
+                legend: {},
+                tooltip: {},
+                dataset: {
+                    source: [
+                        ['product', '2012', '2013', '2014', '2015'],
+                        ['AAA', 41.1, 30.4, 65.1, 53.3],
+                        ['BBB', 86.5, 92.1, 85.7, 83.1],
+                        ['CCC', 24.1, 67.2, 79.5, 86.4]
+                    ]
+                },
+                xAxis: [
+                    {type: 'category', gridIndex: 0},
+                    {type: 'category', gridIndex: 1}
+                ],
+                yAxis: [
+                    {gridIndex: 0},
+                    {gridIndex: 1}
+                ],
+                grid: [
+                    {bottom: '55%'},
+                    {top: '55%'}
+                ],
+                series: [
+                    // These series are in the first grid.
+                    {type: 'bar', seriesLayoutBy: 'row'},
+                    {type: 'bar', seriesLayoutBy: 'row'},
+                    // These series are in the second grid.
+                    {type: 'bar', xAxisIndex: 1, yAxisIndex: 1},
+                    {type: 'bar', xAxisIndex: 1, yAxisIndex: 1},
+                    {type: 'bar', xAxisIndex: 1, yAxisIndex: 1}
+                ]
+            };
+
+
+            var chart = testHelper.create(echarts, 'main0', {
+                title: [
+                    'The legend should be: ',
+                    '"AAA", "BBB", "2012", "2013", "2014"'
+                ],
+                option: option
+                // height: 300,
+                // buttons: [{text: 'btn-txt', onclick: function () {}}],
+                // recordCanvas: true,
+            });
+        });
+        </script>
+
+
+    </body>
+</html>
+
diff --git a/test/ut/core/utHelper.ts b/test/ut/core/utHelper.ts
index bfedb653ae9d80d602a2a7b7d88ebdb9370e4e49..ae23689047703b69eddfa862fb405fd316a5a285 100755
--- a/test/ut/core/utHelper.ts
+++ b/test/ut/core/utHelper.ts
@@ -27,6 +27,7 @@ import {
 import { ComponentMainType } from '../../../src/util/types';
 import Group from 'zrender/src/graphic/Group';
 import Element from 'zrender/src/Element';
+import GlobalModel from '../../../src/model/Global';
 
 
 export function createChart(params?: {
@@ -137,9 +138,13 @@ export function getViewGroup(
     mainType: ComponentMainType,
     index?: number
 ): Group {
-    const component = chart.getModel().getComponent(mainType, index);
+    const component = getECModel(chart).getComponent(mainType, index);
     return component ? chart[
         mainType === 'series' ? '_chartsMap' : '_componentsMap'
     ][component.__viewId].group : null;
 }
 
+export function getECModel(chart: EChartsType): GlobalModel {
+    // @ts-ignore
+    return chart.getModel();
+}
diff --git a/test/ut/spec/component/dataZoom/helper.test.ts b/test/ut/spec/component/dataZoom/helper.test.ts
index f51da55bc250f5bdb021f9209322603c98e56bab..905ae2c1dbcc5eef9bec5ba30585aea84d6c1dcc 100755
--- a/test/ut/spec/component/dataZoom/helper.test.ts
+++ b/test/ut/spec/component/dataZoom/helper.test.ts
@@ -19,7 +19,7 @@
 */
 
 import { findEffectedDataZooms } from '../../../../../src/component/dataZoom/helper';
-import { createChart } from '../../../core/utHelper';
+import { createChart, getECModel } from '../../../core/utHelper';
 import { EChartsType } from '../../../../../src/echarts';
 
 
@@ -50,12 +50,12 @@ describe('dataZoom/helper', function () {
             });
 
             const payload = { type: 'dataZoom', dataZoomIndex: 0 };
-            const dzModels = findEffectedDataZooms(chart.getModel(), payload);
+            const dzModels = findEffectedDataZooms(getECModel(chart), payload);
 
             expect(dzModels.length === 3);
-            expect(dzModels[0] === chart.getModel().getComponent('dataZoom', 0)).toEqual(true);
-            expect(dzModels[1] === chart.getModel().getComponent('dataZoom', 3)).toEqual(true);
-            expect(dzModels[2] === chart.getModel().getComponent('dataZoom', 2)).toEqual(true);
+            expect(dzModels[0] === getECModel(chart).getComponent('dataZoom', 0)).toEqual(true);
+            expect(dzModels[1] === getECModel(chart).getComponent('dataZoom', 3)).toEqual(true);
+            expect(dzModels[2] === getECModel(chart).getComponent('dataZoom', 2)).toEqual(true);
         });
 
         it('findLinkedNodes_crossXY', function () {
@@ -72,13 +72,13 @@ describe('dataZoom/helper', function () {
             });
 
             const payload = { type: 'dataZoom', dataZoomIndex: 0 };
-            const dzModels = findEffectedDataZooms(chart.getModel(), payload);
+            const dzModels = findEffectedDataZooms(getECModel(chart), payload);
 
             expect(dzModels.length === 4);
-            expect(dzModels[0] === chart.getModel().getComponent('dataZoom', 0)).toEqual(true);
-            expect(dzModels[1] === chart.getModel().getComponent('dataZoom', 1)).toEqual(true);
-            expect(dzModels[2] === chart.getModel().getComponent('dataZoom', 2)).toEqual(true);
-            expect(dzModels[3] === chart.getModel().getComponent('dataZoom', 3)).toEqual(true);
+            expect(dzModels[0] === getECModel(chart).getComponent('dataZoom', 0)).toEqual(true);
+            expect(dzModels[1] === getECModel(chart).getComponent('dataZoom', 1)).toEqual(true);
+            expect(dzModels[2] === getECModel(chart).getComponent('dataZoom', 2)).toEqual(true);
+            expect(dzModels[3] === getECModel(chart).getComponent('dataZoom', 3)).toEqual(true);
         });
 
         it('findLinkedNodes_emptySourceModel', function () {
@@ -95,7 +95,7 @@ describe('dataZoom/helper', function () {
             });
 
             const payload = { type: 'other' };
-            const dzModels = findEffectedDataZooms(chart.getModel(), payload);
+            const dzModels = findEffectedDataZooms(getECModel(chart), payload);
 
             expect(dzModels.length === 0);
         });
diff --git a/test/ut/spec/component/graphic/setOption.test.ts b/test/ut/spec/component/graphic/setOption.test.ts
index 6dddca2994332c75819c64db4f61793d9551c90d..815915dce6ce33a0990499bec072ef4eda8ad291 100755
--- a/test/ut/spec/component/graphic/setOption.test.ts
+++ b/test/ut/spec/component/graphic/setOption.test.ts
@@ -17,7 +17,7 @@
 * under the License.
 */
 
-import { createChart, getGraphicElements } from '../../../core/utHelper';
+import { createChart, getGraphicElements, getECModel } from '../../../core/utHelper';
 // import { imageURI } from './setOptionImageURI';
 import { EChartsType } from '../../../../../src/echarts';
 import Element from 'zrender/src/Element';
@@ -338,8 +338,8 @@ describe('graphic_setOption', function () {
                 ]
             });
 
-            expect(!!chart.getModel().getComponent('graphic')).toEqual(true);
-            expect(chart.getModel().getComponent('graphic', 1) == null).toEqual(true);
+            expect(!!getECModel(chart).getComponent('graphic')).toEqual(true);
+            expect(getECModel(chart).getComponent('graphic', 1) == null).toEqual(true);
         });
 
 
diff --git a/test/ut/spec/component/visualMap/setOption.test.ts b/test/ut/spec/component/visualMap/setOption.test.ts
index 3fe14880a09d57edd43994d93e69321b08dcce31..c0f63df933ffa36dd8b04d1339764341b8ffdc28 100755
--- a/test/ut/spec/component/visualMap/setOption.test.ts
+++ b/test/ut/spec/component/visualMap/setOption.test.ts
@@ -18,7 +18,7 @@
 * under the License.
 */
 
-import { createChart } from '../../../core/utHelper';
+import { createChart, getECModel } from '../../../core/utHelper';
 import { EChartsType } from '../../../../../src/echarts';
 import { EChartsFullOption } from '../../../../../src/option';
 import { ContinousVisualMapOption } from '../../../../../src/component/visualMap/ContinuousModel';
@@ -256,7 +256,7 @@ describe('vsiaulMap_setOption', function () {
             ]
         });
 
-        const ecModel = chart.getModel();
+        const ecModel = getECModel(chart);
 
         function getVisual(idx: number, visualType: 'color' | 'opacity' | 'symbol') {
             return (ecModel.getComponent('visualMap', idx) as VisualMapModel)
diff --git a/test/ut/spec/data/dataTransform.test.ts b/test/ut/spec/data/dataTransform.test.ts
new file mode 100644
index 0000000000000000000000000000000000000000..21500d1375165c10cc353e462e1648f4307fed6e
--- /dev/null
+++ b/test/ut/spec/data/dataTransform.test.ts
@@ -0,0 +1,185 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements.  See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership.  The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License.  You may obtain a copy of the License at
+*
+*   http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied.  See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+import { EChartsType } from '../../../../src/echarts';
+import { createChart, removeChart, getECModel } from '../../core/utHelper';
+import { EChartsFullOption } from '../../../../src/option';
+import { retrieveRawValue } from '../../../../src/data/helper/dataProvider';
+
+
+describe('dataTransform', function () {
+
+    let chart: EChartsType;
+
+    beforeEach(function () {
+        chart = createChart({
+            width: 200,
+            height: 150
+        });
+    });
+
+    afterEach(function () {
+        removeChart(chart);
+    });
+
+    function makeDatasetSourceDetection() {
+        return [
+            ['product', '2012', '2013', '2014', '2015'],
+            ['AAA', 41.1, 30.4, 65.1, 53.3],
+            ['BBB', 86.5, 92.1, 85.7, 83.1],
+            ['CCC', 24.1, 67.2, 79.5, 86.4]
+        ];
+    }
+
+    function makeDatasetSourceNonDetectionByRow() {
+        return {
+            dimensions: ['2012', '2013', '2014', '2015'],
+            source: [
+                [41.1, 30.4, 65.1, 53.3],
+                [86.5, 92.1, 85.7, 83.1],
+                [24.1, 67.2, 79.5, 86.4]
+            ]
+        };
+    }
+
+    it('forbid_seriesLayoutBy_row', function () {
+        const option: EChartsFullOption = {
+            dataset: [{
+                source: makeDatasetSourceDetection(),
+                // This config should cause error thrown.
+                seriesLayoutBy: 'row'
+            }, {
+                transform: { type: 'filter', config: { dimension: 0, ne: '' } }
+            }],
+            xAxis: { type: 'category' },
+            yAxis: {},
+            series: { type: 'bar', datasetIndex: 1 }
+        };
+
+        expect(() => {
+            chart.setOption(option);
+        }).toThrowError(/column/);
+    });
+
+    it('seriesLayoutBy_changed_no_transform', function () {
+        const option: EChartsFullOption = {
+            dataset: {
+                source: makeDatasetSourceDetection()
+            },
+            xAxis: { type: 'category' },
+            yAxis: {},
+            series: { type: 'bar', seriesLayoutBy: 'row' }
+        };
+
+        chart.setOption(option);
+        const listData = getECModel(chart).getSeries()[0].getData();
+        expect(listData.getDimension(1)).toEqual('AAA');
+        expect(listData.getDimension(2)).toEqual('BBB');
+        expect(listData.getDimension(3)).toEqual('CCC');
+    });
+
+    [{
+        transform:
+            { type: 'filter', config: { dimension: 'product', '!=': 'XXX' } }
+    }, {
+        transform: [
+            { type: 'filter', config: { dimension: 'product', '!=': 'XXX' } },
+            { type: 'filter', config: { dimension: 'product', '!=': 'XXX' } }
+        ]
+    }].forEach((dataset1, itIdx) => {
+        it(`seriesLayoutBy_changed_transform_detection_${itIdx}`, function () {
+            const option: EChartsFullOption = {
+                dataset: [{
+                    source: makeDatasetSourceDetection()
+                }, dataset1],
+                xAxis: { type: 'category' },
+                yAxis: {},
+                series: { type: 'bar', datasetIndex: 1, seriesLayoutBy: 'row' }
+            };
+
+            chart.setOption(option);
+            const listData = getECModel(chart).getSeries()[0].getData();
+            expect(listData.getDimension(1)).toEqual('AAA');
+            expect(listData.getDimension(2)).toEqual('BBB');
+            expect(listData.getDimension(3)).toEqual('CCC');
+            expect(listData.get('product', 0)).toEqual(0);
+            expect(retrieveRawValue(listData, 0, 'product')).toEqual('2012');
+            expect(listData.get('product', 1)).toEqual(1);
+            expect(retrieveRawValue(listData, 1, 'product')).toEqual('2013');
+        });
+    });
+
+    [{
+        transform:
+            { type: 'filter', config: { dimension: 0, '!=': 'XXX' } }
+    }, {
+        transform: [
+            { type: 'filter', config: { dimension: 0, '!=': 'XXX' } },
+            { type: 'filter', config: { dimension: 0, '!=': 'XXX' } }
+        ]
+    }].forEach((dataset1, itIdx) => {
+        it(`seriesLayoutBy_changed_transform_non_detection_${itIdx}`, function () {
+            const sourceWrap = makeDatasetSourceNonDetectionByRow();
+            const option: EChartsFullOption = {
+                dataset: [{
+                    dimensions: sourceWrap.dimensions,
+                    source: sourceWrap.source
+                }, dataset1],
+                xAxis: {},
+                yAxis: {},
+                series: { type: 'bar', datasetIndex: 1, seriesLayoutBy: 'row' }
+            };
+
+            chart.setOption(option);
+            const listData = getECModel(chart).getSeries()[0].getData();
+            expect(listData.get(listData.getDimension(0), 0)).toEqual(41.1);
+            expect(listData.get(listData.getDimension(0), 1)).toEqual(30.4);
+        });
+    });
+
+    [{
+        transform:
+            { type: 'filter', config: { dimension: '2012', '!=': 'XXX' } }
+    }, {
+        transform: [
+            { type: 'filter', config: { dimension: '2012', '!=': 'XXX' } },
+            { type: 'filter', config: { dimension: '2012', '!=': 'XXX' } }
+        ]
+    }].forEach((dataset1, itIdx) => {
+        it(`inherit_detected_dimensions_${itIdx}`, function () {
+            const option: EChartsFullOption = {
+                dataset: [{
+                    source: makeDatasetSourceDetection()
+                }, dataset1],
+                xAxis: { type: 'category' },
+                yAxis: {},
+                series: { type: 'bar', datasetIndex: 1 }
+            };
+
+            chart.setOption(option);
+            const listData = getECModel(chart).getSeries()[0].getData();
+            expect(listData.getDimension(0)).toEqual('product');
+            expect(listData.getDimension(1)).toEqual('2012');
+            expect(listData.getDimension(2)).toEqual('2013');
+        });
+    });
+
+
+});
+
diff --git a/test/ut/spec/model/Global.test.ts b/test/ut/spec/model/Global.test.ts
index 399f6537d471f50ce079ae70c68dcbe76a0fd1bd..ff26ed5af2ff7d266cc5621649ac3d037043d6be 100755
--- a/test/ut/spec/model/Global.test.ts
+++ b/test/ut/spec/model/Global.test.ts
@@ -19,7 +19,7 @@
 */
 
 import { EChartsType } from '../../../../src/echarts';
-import { createChart } from '../../core/utHelper';
+import { createChart, getECModel } from '../../core/utHelper';
 import { ComponentMainType, ParsedValue } from '../../../../src/util/types';
 import SeriesModel from '../../../../src/model/Series';
 import ComponentModel from '../../../../src/model/Component';
@@ -39,11 +39,11 @@ describe('modelAndOptionMapping', function () {
     }
 
     function getSeries(chart: EChartsType, seriesIndex: number): SeriesModel {
-        return chart.getModel().getComponent('series', seriesIndex) as SeriesModel;
+        return getECModel(chart).getComponent('series', seriesIndex) as SeriesModel;
     }
 
     function getModel(chart: EChartsType, type: ComponentMainType, index: number): ComponentModel {
-        return chart.getModel().getComponent(type, index);
+        return getECModel(chart).getComponent(type, index);
     }
 
     function countSeries(chart: EChartsType): number {
@@ -54,7 +54,7 @@ describe('modelAndOptionMapping', function () {
         // FIXME
         // access private
         // @ts-ignore
-        return chart.getModel()._componentsMap.get(type).length;
+        return getECModel(chart)._componentsMap.get(type).length;
     }
 
     function getChartView(chart: EChartsType, series: SeriesModel): ChartView {
@@ -801,14 +801,14 @@ describe('modelAndOptionMapping', function () {
                 ]
             };
             chart.setOption(option);
-            expect(chart.getModel().option.backgroundColor).toEqual('rgba(1,1,1,1)');
+            expect(getECModel(chart).option.backgroundColor).toEqual('rgba(1,1,1,1)');
 
             // Not merge
             chart.setOption({
                 backgroundColor: '#fff'
             }, true);
 
-            expect(chart.getModel().option.backgroundColor).toEqual('#fff');
+            expect(getECModel(chart).option.backgroundColor).toEqual('#fff');
         });
 
         it('innerId', function () {
diff --git a/test/ut/spec/model/timelineMediaOptions.test.ts b/test/ut/spec/model/timelineMediaOptions.test.ts
index 2751a14fc61b153d39baa61273a3bccf76cb9be0..8bcb3425103dca865f8d938f1be2750bfc6800e3 100755
--- a/test/ut/spec/model/timelineMediaOptions.test.ts
+++ b/test/ut/spec/model/timelineMediaOptions.test.ts
@@ -23,7 +23,7 @@ import SeriesModel from '../../../../src/model/Series';
 import { ParsedValue } from '../../../../src/util/types';
 import { LegendOption } from '../../../../src/component/legend/LegendModel';
 import TimelineModel from '../../../../src/component/timeline/TimelineModel';
-import { createChart } from '../../core/utHelper';
+import { createChart, getECModel } from '../../core/utHelper';
 import { EChartsFullOption } from '../../../../src/option';
 
 
@@ -33,13 +33,13 @@ describe('timelineMediaOptions', function () {
         return getSeries(chart, seriesIndex).getData().get('y', 0);
     }
     function getSeries(chart: EChartsType, seriesIndex: number): SeriesModel {
-        return chart.getModel().getComponent('series', seriesIndex) as SeriesModel;
+        return getECModel(chart).getComponent('series', seriesIndex) as SeriesModel;
     }
     function getLegendOption(chart: EChartsType): LegendOption {
-        return chart.getModel().getComponent('legend', 0).option;
+        return getECModel(chart).getComponent('legend', 0).option;
     }
     function getTimelineComponent(chart: EChartsType): TimelineModel {
-        return chart.getModel().getComponent('timeline', 0) as TimelineModel;
+        return getECModel(chart).getComponent('timeline', 0) as TimelineModel;
     }
 
     let chart: EChartsType;
@@ -388,7 +388,7 @@ describe('timelineMediaOptions', function () {
             };
             chart.setOption(option);
 
-            let ecModel = chart.getModel();
+            let ecModel = getECModel(chart);
             expect(getData0(chart, 0)).toEqual(1111);
             expect(getData0(chart, 1)).toEqual(2222);
 
@@ -410,7 +410,7 @@ describe('timelineMediaOptions', function () {
                 }]
             });
 
-            ecModel = chart.getModel();
+            ecModel = getECModel(chart);
             const optionGotten = ecModel.getOption();
             expect(optionGotten.backgroundColor).toEqual('#987654');
             expect(getData0(chart, 0)).toEqual(1111);
diff --git a/test/ut/spec/scale/interval.test.ts b/test/ut/spec/scale/interval.test.ts
index c151ad0079bb362b142480b7b6c2ad27f9b41bd9..81aed8f0319140fbf5879543a7f4f2b2bbe00bb9 100755
--- a/test/ut/spec/scale/interval.test.ts
+++ b/test/ut/spec/scale/interval.test.ts
@@ -18,7 +18,7 @@
 * under the License.
 */
 
-import { createChart, isValueFinite } from '../../core/utHelper';
+import { createChart, isValueFinite, getECModel } from '../../core/utHelper';
 import { EChartsType } from '../../../../src/echarts';
 import CartesianAxisModel from '../../../../src/coord/cartesian/AxisModel';
 import IntervalScale from '../../../../src/scale/Interval';
@@ -57,7 +57,7 @@ describe('scale_interval', function () {
                 series: [{type: 'line', data: []}]
             });
 
-            const yAxis = chart.getModel().getComponent('yAxis', 0) as CartesianAxisModel;
+            const yAxis = getECModel(chart).getComponent('yAxis', 0) as CartesianAxisModel;
             const scale = yAxis.axis.scale;
             const ticks = scale.getTicks();
 
@@ -91,7 +91,7 @@ describe('scale_interval', function () {
                 ]
             });
 
-            const yAxis = chart.getModel().getComponent('yAxis', 0) as CartesianAxisModel;
+            const yAxis = getECModel(chart).getComponent('yAxis', 0) as CartesianAxisModel;
             const scale = yAxis.axis.scale as IntervalScale;
             const ticks = scale.getTicks();
             const labels = yAxis.axis.getViewLabels().map(function (item) {