mazedesignhq/react-heatmap

React component for heatmap.js

react-heatmap's Issues

Action required: Greenkeeper could not be activated 🚨

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how to responsive the React-Heatmap for different device?

I'm developing the web site using React-Heatmap now.
But the react-heatmap is not responsived for defferent device(mobile and desktop).
How can i do it ?

How to solve this problem ?

Browserify Error { [Error: Cannot find module 'heatmapjs/build/heatmap.js' from 'F:\react-heatmap\src']

Error building the project.

If a try to build the library, I get this error:

# npm run build

> [email protected] build /Users/nono/Desarrollo/react-heatmap
> gulp clean && NODE_ENV=production gulp build

/Users/nono/Desarrollo/react-heatmap/node_modules/require-dir/index.js:93
            if (!require.extensions.hasOwnProperty(ext)) {
                                    ^

TypeError: require.extensions.hasOwnProperty is not a function
    at requireDir (/Users/nono/Desarrollo/react-heatmap/node_modules/require-dir/index.js:93:37)
    at Object.<anonymous> (/Users/nono/Desarrollo/react-heatmap/node_modules/gulp-git/index.js:4:18)
    at Module._compile (module.js:662:30)
    at Object.Module._extensions..js (module.js:673:10)
    at Module.load (module.js:575:32)
    at tryModuleLoad (module.js:515:12)
    at Function.Module._load (module.js:507:3)
    at Module.require (module.js:606:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/nono/Desarrollo/react-heatmap/node_modules/react-component-gulp-tasks/tasks/release.js:1:73)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] build: `gulp clean && NODE_ENV=production gulp build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/nono/.npm/_logs/2018-03-22T11_59_34_802Z-debug.log

I have not made any changes to the project.

Max

Is is possible to automatically set the maximum to the highest occurrence of a point? For example:
[{x: 100, y: 100 value: 1}, {x: 150, y: 150, value: 1}, {x: 100, y:100 value: 1}] would set the max to 2 automatically since the highest value (2 occurrences at 100,100 at 1 unit each) is 2.

PR: Update src

import React from 'react';
import { reduce, filter, min, max, isNumber, map } from 'lodash';
import L from 'leaflet';
import { MapLayer } from 'react-leaflet';
import simpleheat from 'simpleheat';

export type LngLat = {
  lng: number;
  lat: number;
}

export type Point = {
  x: number;
  y: number;
}

export type Bounds = {
  contains: (latLng: LngLat) => boolean;
}

export type Pane = {
  appendChild: (element: Object) => void;
}

export type Panes = {
  overlayPane: Pane;
}

export type Map = {
  layerPointToLatLng: (lngLat: Point) => LngLat;
  latLngToLayerPoint: (lngLat: LngLat) => Point;
  on: (event: string, handler: () => void) => void;
  getBounds: () => Bounds;
  getPanes: () => Panes;
  invalidateSize: () => void;
  options: Object;
}

export type LeafletZoomEvent = {
  zoom: number;
  center: Object;
}

function isValidLatLngArray(arr: Array<number>): boolean {
  return filter(arr, isValid).length === arr.length;
}

function isInvalidLatLngArray(arr: Array<number>): boolean {
  return !isValidLatLngArray(arr);
}

function isInvalid(num: number): boolean {
  return !isNumber(num) && !num;
}

function isValid(num: number): boolean {
  return !isInvalid(num);
}

function shouldIgnoreLocation(loc: LngLat): boolean {
  return isInvalid(loc.lng) || isInvalid(loc.lat);
}

export default class HeatmapLayer extends MapLayer {
  static propTypes = {
    points: React.PropTypes.array.isRequired,
    longitudeExtractor: React.PropTypes.func.isRequired,
    latitudeExtractor: React.PropTypes.func.isRequired,
    intensityExtractor: React.PropTypes.func.isRequired,
    fitBoundsOnLoad: React.PropTypes.bool,
    fitBoundsOnUpdate: React.PropTypes.bool,
    onStatsUpdate: React.PropTypes.func,
    /* props controlling heatmap generation */
    max: React.PropTypes.number,
    radius: React.PropTypes.number,
    maxZoom: React.PropTypes.number,
    minOpacity: React.PropTypes.number,
    blur: React.PropTypes.number,
    gradient: React.PropTypes.object,
  };

  componentDidMount(): void {
    this.leafletElement = this.container;
    this.props.map.getPanes().overlayPane.appendChild(this.leafletElement);
    this._heatmap = simpleheat(this.leafletElement);

    if (this.props.fitBoundsOnLoad) {
      this.fitBounds();
    }

    this.attachEvents();
    this.updateHeatmapProps(this.getHeatmapProps(this.props));
    this.reset();
  }

  getMax(props) { // eslint-disable-line
    return props.max || 3.0;
  }

  getRadius(props) { // eslint-disable-line
    return props.radius || 30;
  }

  getMaxZoom(props) { // eslint-disable-line
    return props.maxZoom || 18;
  }

  getMinOpacity(props) { // eslint-disable-line
    return props.minOpacity || 0.01;
  }

  getBlur(props) { // eslint-disable-line
    return props.blur || 15;
  }

  getHeatmapProps(props) {
    return {
      minOpacity: this.getMinOpacity(props),
      maxZoom: this.getMaxZoom(props),
      radius: this.getRadius(props),
      blur: this.getBlur(props),
      max: this.getMax(props),
      gradient: props.gradient,
    };
  }

  componentWillReceiveProps(nextProps: Object): void {
    this.updateHeatmapProps(this.getHeatmapProps(nextProps));
  }

  updateHeatmapProps(nextProps: Object) {
    if (nextProps.radius
      && (!this.props || nextProps.radius !== this.props.radius)) {
      this._heatmap.radius(nextProps.radius);
    }

    if (nextProps.gradient) {
      this._heatmap.gradient(nextProps.gradient);
    }

    if (nextProps.max
      && (!this.props || nextProps.max !== this.props.max)) {
      this._heatmap.max(nextProps.max);
    }
  }

  createLeafletElement() { // eslint-disable-line
    return null;
  }

  componentWillUnmount(): void {
    this.props.map.getPanes().overlayPane.removeChild(this.leafletElement);
  }

  fitBounds(): void {
    const points = this.props.points;
    const lngs = map(points, this.props.longitudeExtractor);
    const lats = map(points, this.props.latitudeExtractor);
    const ne = { lng: max(lngs), lat: max(lats) };
    const sw = { lng: min(lngs), lat: min(lats) };

    if (shouldIgnoreLocation(ne) || shouldIgnoreLocation(sw)) {
      return;
    }

    this.props.map.fitBounds(L.latLngBounds(L.latLng(sw), L.latLng(ne)));
  }

  componentDidUpdate(): void {
    this.props.map.invalidateSize();
    if (this.props.fitBoundsOnUpdate) {
      this.fitBounds();
    }
    this.reset();
  }

  shouldComponentUpdate(): boolean {
    return true;
  }

  attachEvents(): void {
    const maps = (Map = this.props.map);
    maps.on('viewreset', () => this.reset());
    maps.on('moveend', () => this.reset());
    if (maps.options.zoomAnimation && L.Browser.any3d) {
      maps.on('zoomanim', this._animateZoom, this);
    }
  }


  _animateZoom(e: LeafletZoomEvent): void {
    const scale = this.props.map.getZoomScale(e.zoom);
    const offset = this.props.map
                              ._getCenterOffset(e.center)
                              ._multiplyBy(-scale)
                              .subtract(this.props.map._getMapPanePos());

    if (L.DomUtil.setTransform) {
      L.DomUtil.setTransform(this.container, offset, scale);
    } else {
      this.container.style[L.DomUtil.TRANSFORM] =
          `${L.DomUtil.getTranslateString(offset)} scale(${scale})`;
    }
  }

  reset(): void {
    const topLeft = this.props.map.containerPointToLayerPoint([0, 0]);
    L.DomUtil.setPosition(this.container, topLeft);

    const size = this.props.map.getSize();

    if (this._heatmap._width !== size.x) {
      this.container.width = this._heatmap._width = size.x;
    }
    if (this._heatmap._height !== size.y) {
      this.container.height = this._heatmap._height = size.y;
    }

    if (this._heatmap && !this._frame && !this.props.map._animating) {
      this._frame = L.Util.requestAnimFrame(this.redraw, this);
    }

    this.redraw();
  }

  redraw(): void {
    const r = this._heatmap._r;
    const size = this.props.map.getSize();

    const maxIntensity = this.props.max === undefined
                            ? 1
                            : this.getMax(this.props);

    const maxZoom = this.props.maxZoom === undefined
                        ? this.props.map.getMaxZoom()
                        : this.getMaxZoom(this.props);

    const v = 1 / Math.max(0, Math.min(maxZoom - this.props.map.getZoom(), 12)) ** 2;

    const cellSize = r / 2;
    const panePos = this.props.map._getMapPanePos();
    const offsetX = panePos.x % cellSize;
    const offsetY = panePos.y % cellSize;
    const getLat = this.props.latitudeExtractor;
    const getLng = this.props.longitudeExtractor;
    const getIntensity = this.props.intensityExtractor;

    const inBounds = (p, bounds) => bounds.contains(p);

    const filterUndefined = rUndefined => filter(rUndefined, c => c !== undefined);

    const roundResults = results => reduce(results, (result, row) => map(filterUndefined(row), cell => [
      Math.round(cell[0]),
      Math.round(cell[1]),
      Math.min(cell[2], maxIntensity),
      cell[3],
    ]).concat(result), []);

    const accumulateInGrid = (points, leafletMap, bounds) => reduce(points, (grid, point) => {
      const latLng = [getLat(point), getLng(point)];
      if (isInvalidLatLngArray(latLng)) { // skip invalid points
        return grid;
      }

      const p = leafletMap.latLngToContainerPoint(latLng);

      if (!inBounds(p, bounds)) {
        return grid;
      }

      const x = Math.floor((p.x - offsetX) / cellSize) + 2;
      const y = Math.floor((p.y - offsetY) / cellSize) + 2;

      grid[y] = grid[y] || [];
      const cell = grid[y][x];

      const alt = getIntensity(point);
      const k = alt * v;

      if (!cell) {
        grid[y][x] = [p.x, p.y, k, 1];
      } else {
        cell[0] = (cell[0] * cell[2] + p.x * k) / (cell[2] + k); // x
        cell[1] = (cell[1] * cell[2] + p.y * k) / (cell[2] + k); // y
        cell[2] += k; // accumulated intensity value
        cell[3] += 1;
      }

      return grid;
    }, []);

    const getBounds = () => new L.Bounds(L.point([-r, -r]), size.add([r, r]));

    const getDataForHeatmap = (points, leafletMap) => roundResults(
        accumulateInGrid(
          points,
          leafletMap,
          getBounds(leafletMap),
        ),
      );
    const data = getDataForHeatmap(this.props.points, this.props.map);

    this._heatmap.clear();
    this._heatmap.data(data).draw(this.getMinOpacity(this.props));

    this._frame = null;
  }


  render(): React.Element {
    const mapSize = this.props.map.getSize();
    const transformProp = L.DomUtil.testProp(
      ['transformOrigin', 'WebkitTransformOrigin', 'msTransformOrigin'],
    );
    const canAnimate = this.props.map.options.zoomAnimation && L.Browser.any3d;
    const zoomClass = `leaflet-zoom-${canAnimate ? 'animated' : 'hide'}`;

    const canvasProps = {
      className: `leaflet-heatmap-layer leaflet-layer ${zoomClass}`,
      style: {
        [transformProp]: '50% 50%',
      },
      width: mapSize.x,
      height: mapSize.y,
    };

    return (
      <canvas ref={ref => this.container = ref} {...canvasProps} />
    );
  }

}

PropTypes problem

I have this when I try to use react-heatmap 👍
×
TypeError: Cannot read property 'number' of undefined ./node_modules/react-heatmap/lib/ReactHeatmap.js
c:/Users/Covarians/Documents/aex-server/client/node_modules/react-heatmap/lib/ReactHeatmap.js:96
93 | })(_react.Component);
94 |
95 | ReactHeatmap.propTypes = {

96 | max: _react2['default'].PropTypes.number,
97 | data: _react2['default'].PropTypes.array,
98 | unit: _react2['default'].PropTypes.string
99 | };

Note : I commented the lines and it worked. But this is a temporary fix.

Radius

Has anyone successfully modified the radius field? I've forked the project and included radius as a config key after container in compDidMount but that seems to make no difference.

Thanks

how to setup heatmap configure

After I read heatmap.js document, I fund

var nuConfig = {
radius: 10,
maxOpacity: .5,
minOpacity: 0,
blur: .75
};
heatmapInstance.configure(nuConfig);

How we do it on this react version?

also how can we setup lowest value for data points on map, like Min=?

Thx

Cannot read property 'number' of undefined

./node_modules/react-heatmap/lib/ReactHeatmap.js

Line 96 for some reason its not recognizing this property. I am not sure why I am having this issue. I have tried uninstalling, npm cache clean --force, I get the same issues with this component. I used it a few months ago in another project and it worked perfectly. Now I am having issues.

Install and run react-heatmap with react 16.x

I tried to install react-heatmap with react 16.4, and lower 16. versions, but can t get it to run.

Has anybody had success in using react-heatmap with a react 16.x project?

Please share some insights on how u got it to work.. Thx!

It says requires dependency of react 0.14.6

When trying to install, I get the error message, "UNMET PEER DEPENDENCY [email protected]. [email protected] requires a peer of react@^0.14.6 but none was installed.