Spatial analysis | OpenLayers

Spatial analysis is the process of using analytical techniques to find relationships, discover patterns, and solve problems with geographic data.

To perform spatial analysis with OpenLayers, use the ArcGIS REST JS library to access the spatial analysis service.

Steps

Use ArcGIS portal to import your data and create a feature service and feature layer.
Get your analysis URL.
Use the request package in ArcGIS REST JS.
Perform a spatial analysis operation.
Display the results in a map with OpenLayers.

Feature analysis

You can use feature analysis to find where features overlap, measure their size and shape, or detect patterns and relationships in your data.

Perform a feature analysis

Learn how to perform a hot spot analysis on parking data using the Job request in ArcGIS REST JS.

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      const runAnalysis = async () => {
        const analysisUrl = await getAnalysisUrl(session);
        const operationUrl = `${analysisUrl}/FindHotSpots/submitJob`;
        const params = {
          analysisLayer: {
            url: "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/sf_traffic_parking_violations_sa_osapi/FeatureServer/0"
          },
          shapeType: "Hexagon",
          outputName: {
            serviceProperties: {
              name: `OpenLayers_find_hot_spots_${new Date().getTime()}`
            }
          } //Outputs results as a hosted feature service.
        };

        const jobReq = await arcgisRest.Job.submitJob({
          url: operationUrl,
          params: params,
          authentication: session
        });

        showInfo(true, "Initializing analysis...");
        // listen to the status event to get updates every time the job status is checked.
        jobReq.on(arcgisRest.JOB_STATUSES.Status, (jobInfo) => {
          console.log(jobInfo.status);
          showInfo(true, "Hot spot analysis running...");
        });

        // get all the results, this will start monitoring and trigger events
        const jobResp = await jobReq.getAllResults();

        // jobResp.aggregatedLayer.value.url
        return jobResp;
      };
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Steps

Feature analysis

Perform a feature analysis

More resources