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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| import VectorLayer from "ol/layer/Vector" | ||
| import { IMDLayer } from "../state" | ||
| import BaseLayer from "ol/layer/Base" | ||
| import { memoize } from "lodash" | ||
| import VectorSource from "ol/source/Vector" | ||
| import { Fill, Stroke, Style, Text } from "ol/style" | ||
| import GeoJSON from "ol/format/GeoJSON" | ||
| import { bbox } from "ol/loadingstrategy" | ||
| import { Map } from "ol" | ||
| import { getColorStops } from "./model_output" | ||
| import { findColor } from "../analysis_panel_tools/subsection" | ||
|
|
||
| interface IMDProperty { | ||
| name: string | ||
| propName: string | ||
| min: number | ||
| max: number | ||
| } | ||
|
|
||
| export const IMDProperties: IMDProperty[] = [ | ||
| { | ||
| name: "IMD - Decile", | ||
| propName: "IMD_Decile", | ||
| min: 10, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "IMD - Rank", | ||
| propName: "IMD_Rank", | ||
| min: 32844, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Income - Decile", | ||
| propName: "IncDec", | ||
| min: 10, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Income - Rank", | ||
| propName: "IncRank", | ||
| min: 32844, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Employment - Decile", | ||
| propName: "EmpDec", | ||
| min: 10, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Employment - Rank", | ||
| propName: "EmpRank", | ||
| min: 32844, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Education, Skills and Training - Decile", | ||
| propName: "EduDec", | ||
| min: 10, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Education, Skills and Training - Rank", | ||
| propName: "EduRank", | ||
| min: 32844, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Health Deprivation and Disability - Decile", | ||
| propName: "HDDec", | ||
| min: 10, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Health Deprivation and Disability - Rank", | ||
| propName: "HDDRank", | ||
| min: 32844, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Crime - Decile", | ||
| propName: "CriDec", | ||
| min: 10, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Crime - Rank", | ||
| propName: "CriRank", | ||
| min: 32844, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Barriers to Housing and Services - Decile", | ||
| propName: "BHSDec", | ||
| min: 10, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Barriers to Housing and Services - Rank", | ||
| propName: "BHSRank", | ||
| min: 32844, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Living Environment - Decile", | ||
| propName: "EnvDec", | ||
| min: 10, | ||
| max: 1 | ||
| }, | ||
| { | ||
| name: "Living Environment - Rank", | ||
| propName: "EnvRank", | ||
| min: 32844, | ||
| max: 1 | ||
| } | ||
| ] | ||
|
|
||
| export type IMDProp = typeof IMDProperties[number] | ||
|
|
||
| const imdSource = memoize(() => | ||
| new VectorSource({ | ||
| url: extent => `https://landscapes.wearepal.ai/geoserver/shapefiles/ows?service=WFS&version=1.0.0&request=GetFeature&typeName=shapefiles:IMD_2019&outputFormat=application/json&bbox=${extent.join(',')},EPSG:3857&crs=EPSG:3857`, | ||
| format: new GeoJSON(), | ||
| strategy: bbox, | ||
| attributions: '© <a href="https://data.cdrc.ac.uk/dataset/index-multiple-deprivation-imd">Consumer Data Research Centre</a>' | ||
| }) | ||
| ) | ||
|
|
||
| const styleFn = memoize((colMap : any[], prop : IMDProperty) => | ||
| (feature) => { | ||
|
|
||
| const val = feature.get(prop.propName) | ||
| const [min, max] = prop.min > prop.max ? [prop.max, prop.min] : [prop.min, prop.max] | ||
| const normalisedValue = prop.min > prop.max ? 1 - (val - min) / (max - min) : (val - min) / (max - min) | ||
| const col = findColor(normalisedValue, colMap) | ||
|
|
||
| return new Style({ | ||
| fill: new Fill({ color: `rgba(${col[0]}, ${col[1]}, ${col[2]}, 1)`}) | ||
| }) | ||
| } | ||
| ) | ||
|
|
||
| export function reifyIMDLayer(layer: IMDLayer, existingLayer: BaseLayer | null, map: Map) { | ||
|
|
||
| const colMap = getColorStops(layer.fill === "heatmap" ? "jet" : (layer.fill === "greyscale" ? "greys" : layer.fill), 100).reverse() | ||
|
|
||
| return new VectorLayer({ | ||
| source: imdSource(), | ||
| style: styleFn(colMap, layer.property), | ||
| }) | ||
| } | ||
|
|
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