feat: Add Deck.gl Contour Layer

superset-frontend/plugins/legacy-preset-chart-deckgl/src/layers/Contour/Contour.tsx

@@ -0,0 +1,103 @@
+/**
+ * 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 { ContourLayer } from 'deck.gl';
+import React from 'react';
+import { t } from '@superset-ui/core';
+import { commonLayerProps } from '../common';
+import sandboxedEval from '../../utils/sandbox';
+import { createDeckGLComponent, getLayerType } from '../../factory';
+import { ColorType } from '../../types';
+import TooltipRow from '../../TooltipRow';
+
+function setTooltipContent(o: any) {
+  return (
+    <div className="deckgl-tooltip">
+      <TooltipRow
+        label={t('Centroid (Longitude and Latitude): ')}
+        value={`(${o?.coordinate[0]}, ${o?.coordinate[1]})`}
+      />
+      <TooltipRow
+        label={t('Threshold: ')}
+        value={`${o?.object?.contour?.threshold}`}
+      />
+    </div>
+  );
+}
+export const getLayer: getLayerType<unknown> = function (
+  formData,
+  payload,
+  onAddFilter,
+  setTooltip,
+) {
+  const fd = formData;
+  const {
+    aggregation = 'SUM',
+    js_data_mutator: jsFnMutator,
+    contours: rawContours,
+    cellSize = '200',
+  } = fd;
+  let data = payload.data.features;
+
+  const contours = rawContours?.map(
+    (contour: {
+      color: ColorType;
+      lowerThreshold: number;
+      upperThreshold?: number;
+      strokeWidth?: number;
+    }) => {
+      const { lowerThreshold, upperThreshold, color, strokeWidth } = contour;
+      if (upperThreshold) {
+        // Isoband format
+        return {
+          threshold: [lowerThreshold, upperThreshold],
+          color: [color.r, color.g, color.b],
+        };
+      }
+      // Isoline format
+      return {
+        threshold: lowerThreshold,
+        color: [color.r, color.g, color.b],
+        strokeWidth,
+      };
+    },
+  );
+
+  if (jsFnMutator) {
+    // Applying user defined data mutator if defined
+    const jsFnMutatorFunction = sandboxedEval(fd.js_data_mutator);
+    data = jsFnMutatorFunction(data);
+  }
+
+  return new ContourLayer({
+    id: `contourLayer-${fd.slice_id}`,
+    data,
+    contours,
+    cellSize: Number(cellSize || '200'),
+    aggregation: aggregation.toUpperCase(),
+    getPosition: (d: { position: number[]; weight: number }) => d.position,
+    getWeight: (d: { weight: number }) => d.weight || 0,
+    ...commonLayerProps(fd, setTooltip, setTooltipContent),
+  });
+};
+
+function getPoints(data: any[]) {
+  return data.map(d => d.position);
+}
+
+export default createDeckGLComponent(getLayer, getPoints);

superset-frontend/plugins/legacy-preset-chart-deckgl/src/layers/Contour/controlPanel.ts

@@ -0,0 +1,133 @@
+/**
+ * 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 {
+  ControlPanelConfig,
+  getStandardizedControls,
+  sections,
+} from '@superset-ui/chart-controls';
+import { t, validateNonEmpty } from '@superset-ui/core';
+import {
+  autozoom,
+  filterNulls,
+  jsColumns,
+  jsDataMutator,
+  jsOnclickHref,
+  jsTooltip,
+  mapboxStyle,
+  spatial,
+  viewport,
+} from '../../utilities/Shared_DeckGL';
+
+const config: ControlPanelConfig = {
+  controlPanelSections: [
+    sections.legacyRegularTime,
+    {
+      label: t('Query'),
+      expanded: true,
+      controlSetRows: [
+        [spatial],
+        ['row_limit'],
+        ['size'],
+        [filterNulls],
+        ['adhoc_filters'],
+      ],
+    },
+    {
+      label: t('Map'),
+      expanded: true,
+      controlSetRows: [
+        [mapboxStyle, viewport],
+        [autozoom],
+        [
+          {
+            name: 'cellSize',
+            config: {
+              type: 'TextControl',
+              label: t('Cell Size'),
+              default: 300,
+              isInt: true,
+              description: t('The size of each cell in meters'),
+              renderTrigger: true,
+              clearable: false,
+            },
+          },
+        ],
+        [
+          {
+            name: 'aggregation',
+            config: {
+              type: 'SelectControl',
+              label: t('Aggregation'),
+              description: t(
+                'The function to use when aggregating points into groups',
+              ),
+              default: 'sum',
+              clearable: false,
+              renderTrigger: true,
+              choices: [
+                ['sum', t('sum')],
+                ['min', t('min')],
+                ['max', t('max')],
+                ['mean', t('mean')],
+              ],
+            },
+          },
+        ],
+        [
+          {
+            name: 'contours',
+            config: {
+              type: 'ContourControl',
+              label: t('Contours'),
+              renderTrigger: true,
+              description: t(
+                'Define contour layers. Isolines represent a collection of line segments that ' +
+                  'serparate the area above and below a given threshold. Isobands represent a ' +
+                  'collection of polygons that fill the are containing values in a given ' +
+                  'threshold range.',
+              ),
+            },
+          },
+        ],
+      ],
+    },
+    {
+      label: t('Advanced'),
+      controlSetRows: [
+        [jsColumns],
+        [jsDataMutator],
+        [jsTooltip],
+        [jsOnclickHref],
+      ],
+    },
+  ],
+  controlOverrides: {
+    size: {
+      label: t('Weight'),
+      description: t("Metric used as a weight for the grid's coloring"),
+      validators: [validateNonEmpty],
+    },
+  },
+  formDataOverrides: formData => ({
+    ...formData,
+    size: getStandardizedControls().shiftMetric(),
+  }),
+};
+
+export default config;

superset-frontend/plugins/legacy-preset-chart-deckgl/src/layers/Contour/index.ts

@@ -0,0 +1,45 @@
+/**
+ * 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 { t, ChartMetadata, ChartPlugin } from '@superset-ui/core';
+import transformProps from '../../transformProps';
+import controlPanel from './controlPanel';
+import thumbnail from './images/thumbnail.png';
+
+const metadata = new ChartMetadata({
+  category: t('Map'),
+  credits: ['https://uber.github.io/deck.gl'],
+  description: t(
+    'Uses Gaussian Kernel Density Estimation to visualize spatial distribution of data',
+  ),
+  name: t('deck.gl Countour'),
+  thumbnail,
+  useLegacyApi: true,
+  tags: [t('deckGL'), t('Spatial'), t('Comparison'), t('Experimental')],
+});
+
+export default class ContourChartPlugin extends ChartPlugin {
+  constructor() {
+    super({
+      loadChart: () => import('./Contour'),
+      controlPanel,
+      metadata,
+      transformProps,
+    });
+  }
+}

superset-frontend/plugins/legacy-preset-chart-deckgl/src/preset.ts

@@ -27,6 +27,7 @@ import PathChartPlugin from './layers/Path';
 import PolygonChartPlugin from './layers/Polygon';
 import ScatterChartPlugin from './layers/Scatter';
 import ScreengridChartPlugin from './layers/Screengrid';
+import ContourChartPlugin from './layers/Contour';
 
 export default class DeckGLChartPreset extends Preset {
   constructor() {
@@ -43,6 +44,7 @@ export default class DeckGLChartPreset extends Preset {
         new PolygonChartPlugin().configure({ key: 'deck_polygon' }),
         new ScatterChartPlugin().configure({ key: 'deck_scatter' }),
         new ScreengridChartPlugin().configure({ key: 'deck_screengrid' }),
+        new ContourChartPlugin().configure({ key: 'deck_contour' }),
       ],
     });
   }

superset-frontend/plugins/legacy-preset-chart-deckgl/src/types.ts

@@ -21,3 +21,9 @@
 
 export type Range = [number, number];
 export type Point = [number, number];
+export interface ColorType {
+  r: number;
+  g: number;
+  b: number;
+  a: number;
+}

superset-frontend/plugins/legacy-preset-chart-deckgl/types/external.d.ts

@@ -17,4 +17,55 @@
  * under the License.
  */
 
-declare module '*.png';
+declare module 'deck.gl' {
+  import { Layer, LayerProps } from '@deck.gl/core';
+
+  interface HeatmapLayerProps<T extends object = any> extends LayerProps<T> {
+    id?: string;
+    data?: T[];
+    getPosition?: (d: T) => number[] | null | undefined;
+    getWeight?: (d: T) => number | null | undefined;
+    radiusPixels?: number;
+    colorRange?: number[][];
+    threshold?: number;
+    intensity?: number;
+    aggregation?: string;
+  }
+
+  interface ContourLayerProps<T extends object = any> extends LayerProps<T> {
+    id?: string;
+    data?: T[];
+    getPosition?: (d: T) => number[] | null | undefined;
+    getWeight?: (d: T) => number | null | undefined;
+    contours: {
+      color?: ColorType | undefined;
+      lowerThreshold?: any | undefined;
+      upperThreshold?: any | undefined;
+      strokeWidth?: any | undefined;
+      zIndex?: any | undefined;
+    };
+    cellSize: number;
+    colorRange?: number[][];
+    intensity?: number;
+    aggregation?: string;
+  }
+
+  export class HeatmapLayer<T extends object = any> extends Layer<
+    T,
+    HeatmapLayerProps<T>
+  > {
+    constructor(props: HeatmapLayerProps<T>);
+  }
+
+  export class ContourLayer<T extends object = any> extends Layer<
+    T,
+    ContourLayerProps<T>
+  > {
+    constructor(props: ContourLayerProps<T>);
+  }
+}
+
+declare module '*.png' {
+  const value: any;
+  export default value;
+}