Hi. In ArcGIS Online using the web map Attribute Expressions builder, I'm trying to pull feature xy coordinates to show in a popup. In the builder, my code successfully tests with a value; but the value in the popup and layer table is empty. I'm using a map service if that matters.
So, is this code supposed to work? Or am I doing something wrong?
Thanks.
This function seems to work properly.
Text(Geometry($feature).x);
and returns this in the popup
Have you checked the popup configuration to see if it's displaying the custom expression?
Thanks for the help so far. Are you using map services or feature layers/services?
Thanks.
I used a hosted feature service.
Thanks everyone for the help so far. I do see the code works with map services. The field in the table won't always populate (for me anyway) so I didn't catch that it worked in the popup.
I think the problem is with the map service I started with. I haven't figure out why, yet, but it appears that the "point" feature-type layer loaded via the map service is really a "multipoint" layer/feature class. For some reason the point-related arcade expression code works with the layer in the expression builder, but perhaps not outside of the builder. I'm looking more closely at our map service and the map viewer.
If anyone would like to take a closer look, here's the map service: NCDOT_STIP (MapServer)
Thanks again. I really appreciate the help.
For multipoint geometry you may want to try this:
return Round(Geometry($feature).points[0].X, 2)
and:
return Round(Geometry($feature).points[0].Y, 2)... since it is a collection of points although each multipoint only has a single point (as far as I could see from a query on your REST service)
How can i get de X and Y point from my feature in the coordenate system from the rest url?
I need to create a custom expression to put it on the popup window with this info.
the Geoametry function retorns only in web mercator.
In case you need the coordinates in WGS 1984, I have a couple of posts that show an example of how you can convert Web Mercator coords to WGS 1984. This might be useful in case you need to create a hyperlink to Streetview or Waze or send the coordinates to prefill a Survey123 form.
Examples (in Spanish) can be found here:
Hello Xander:
Thank you for posting this! I am wondering why my conversions are not lining up with my coordinates calculated in Arcmap. Is this the limit of this method as it is already less than 1 metre or do i need to set my Origin Shift differently perhaps?
X Conversion:
var originShift = 2.0 * PI * 6378137.0 / 2.0;
var lon = (Geometry($feature).x / originShift) * 180.0;
return [lon];
Y Conversion:
var originShift = 2.0 * PI * 6378137.0 / 2.0;
var lat = (Geometry($feature).y / originShift) * 180.0;
lat = 180.0 / PI * (2.0 * Atan( Exp( lat * PI / 180.0)) - PI / 2.0);
return [lat];
Kind Regards
The arcade expression to calculate the lat/lon values is not the most precise way of calculating the data. In addition depending on the view scale Arcade might not retrieve the exact location from the feature. The precision will do to launch navigation with Waze or open a window with Streetview, but is not the solution for an exact conversion of the coordinates. I am still waiting for the projection engine to be implemented in Arcade to obtain more exact results.
Hopefully there will be a blog post when the projection engine comes to Arcade.
Is there a way to display the location of a point in pop up using the arcade or any other way to add location in pop up along with other attributes that i get from arcade expression??
Yes, you can. You can access the coordinate properties of a geometry and include those in the pop-up using Arcade. See example below:
var geom = Geometry($feature);
return "(" + Round(geom.x, 3) + ", " + Round(geom.y, 3) + ")";i am trying to say i want to include the address of a point in a pop up using arcade(something like reverse geocode to get the address of a point as it is displayed in google map)!! i have a point layer which is editable by the user. When user adds a point i want address be displayed in the popup along with other attribute.
Reverse geocoding is not available through Arcade.
Not sure what might be going wrong in your case. I just configured something similar and it works.
I entered the pop-up settings and added two expressions:
and the result is displayed: