Rounding the Service Pixel Value in a PopupTemplate

Gianna_BBSRC — Sat, 11 Dec 2021 14:23:40 GMT

Hello,

I have an 32 bit Float single-band ImageryLayer with a popupTemplate assigned.

The popup shows the raster service pixel value with the following code:

const variableLayer = new ImageryLayer({
       url: 'https://this_is_a_fake_url/ImageServer',
       popupTemplate: {
            title: '{Raster.ServicePixelValue} variable count(s) in {Year}' 
            content: [],
       },
});‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Is there a way to round the service pixel value which is displayed in the popup? Note: I do not want to round the raster data pixels themselves.

I've tried something like this:

const variableLayer = new ImageryLayer({
       url: 'https://this_is_a_fake_url/ImageServer',
       popupTemplate: {
            //title: '{Raster.ServicePixelValue} variable count(s) in {Year}'
            content: '{expression/pixelvalue} variable count(s) in {Year}',
            expressionInfos: [{
                    name: 'pixelvalue',
                    expression: 'Round($Raster.ServicePixelValue, 2)'
            }]
       },
});‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Any combination of experimenting that I've tried has resulted in either undefined or null in the place where the pixel value should be displayed in the popup.

Any help is massively appreciated! Thank you for reading.

Re: Rounding the Service Pixel Value in a PopupTemplate

Gianna_BBSRC — Sat, 11 Dec 2021 14:23:42 GMT

I've found the answer on the updated page for popupTemplate

let popupTemplate = {
   title: '',
   fieldInfos: [{
      fieldName: 'Raster.ItemPixelValue',
      format: {
         places: 0, // precision
         digitSeparator: true // thousands comma separator
            }
   }]
};‍‍‍‍‍‍‍‍‍‍

topic Rounding the Service Pixel Value in a PopupTemplate in ArcGIS JavaScript Maps SDK Questions

Rounding the Service Pixel Value in a PopupTemplate

Re: Rounding the Service Pixel Value in a PopupTemplate