topic JS API 4.17 sketch widget rectangle, how to get height width in ArcGIS JavaScript Maps SDK Questions

JS API 4.17 sketch widget rectangle, how to get height width

johnbrosowsky — Tue, 20 Oct 2020 14:57:39 GMT

How can you get height and width in screen pixels of a rectangle drawn with the sketch widget?

Re: JS API 4.17 sketch widget rectangle, how to get height width

RobertScheitlin__GISP — Tue, 20 Oct 2020 15:35:40 GMT

Get the geometry (extent) use the xmin, ymin, xmax, ymax to create a points then the views toScreen method to get the point screen coordinates and do the math.

Re: JS API 4.17 sketch widget rectangle, how to get height width

UndralBatsukh — Sun, 12 Dec 2021 07:37:19 GMT

Hi there,

You can listen to create event on the sketch. When the create operation is completed, check the tool that created a shape, then divide the rectangle polygon extent's width and height by the view resolution. This will give you the rectangle polygon's extent width and heights in pixels.

sketch.on("create", function(event){
  // when draw rectangle create event is completed
  if (event.state === "complete" && event.tool === "rectangle"){
     console.log(event.graphic.geometry.extent.width / view.resolution, "pixels");
     console.log(event.graphic.geometry.extent.height / view.resolution, "pixels");
  }
});‍‍‍‍‍‍‍‍‍‍‍‍‍

Here is a doc for the MapView.resolution.

-Undral