topic Re: measurement errors with Draw widget in ArcGIS Experience Builder Questions

measurement errors with Draw widget

ClintOffutt1 — Thu, 15 May 2025 12:39:34 GMT

Hi, I am bringing this up again, seeing if anyone else has any ideas on a previous thread I had:

I had a question using the Draw widget measurements.

I have a web map in the my local stateplane projection. When using the Draw widget tool tips and constraits, the "total length" (or total area if drawing polygon) does not match the label that is placed when Show area measurement is checked on.

Why don't these numbers match?

Re: measurement errors with Draw widget

KristinThorpe1 — Mon, 19 May 2025 14:00:11 GMT

Hi Clint! Unrelated to your question, but I noticed the tool tip shows units in feet. How did you accomplish this? Is it only possible with a custom basemap? I want the Edit widget to show dimensions in feet when creating new features. Thanks!

Re: measurement errors with Draw widget

ClintOffutt1 — Mon, 19 May 2025 18:24:09 GMT

Hi, yes, the way I understand it, the tool tips will be the default unit of your map projection. So in my case, a custom basemap was required (state plane coordinate system) to use feet. However, I don't trust what it's measuring at all, hence my post. I am almost wondering if behind the scenes it is all measured in WGS84 or whatever the AGOL default projection is.

Another option I would like to see on the Draw widget of ExB is to be able to choose the units of the tool tips constraints, if any of the developers are listening. Thanks