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How can I get x,y in dec degrees from a poly feat serv using arcade?

GusMonteverde1

Greetings Dev Community-

I need help with an arcade expression. I am trying to generate x,y pairs from a tax lot polygon feature service. In my "custom" field I have used the following expression:

var pnt= Centroid(Geometry($feature));
return Text(pnt);

RESULT...

{"x":-13649119.198784793,"y":5696311.278630899,"spatialReference":{"latestWkid":3857,"wkid":102100}}

but, I need the x and y to be returned in dec degrees, and my results appear to be on UTM northing/easting

I also tried to call a member method X and Y but I am getting the following error...

Thanks!

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Accepted answers

XanderBakker

Try this:

Expression:

<SPAN class="keyword token">var</SPAN> poly <SPAN class="operator token">=</SPAN> <SPAN class="token function">Geometry</SPAN><SPAN class="punctuation token">(</SPAN>$feature<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="keyword token">var</SPAN> result <SPAN class="operator token">=</SPAN> <SPAN class="string token">""</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="operator token">!</SPAN><SPAN class="token function">IsEmpty</SPAN><SPAN class="punctuation token">(</SPAN>poly<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">var</SPAN> pnt_centr <SPAN class="operator token">=</SPAN> <SPAN class="token function">Centroid</SPAN><SPAN class="punctuation token">(</SPAN>poly<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="token function">Console</SPAN><SPAN class="punctuation token">(</SPAN>pnt_centr<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; result <SPAN class="operator token">=</SPAN> <SPAN class="string token">"("</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="token function">Round</SPAN><SPAN class="punctuation token">(</SPAN>pnt_centr<SPAN class="punctuation token">.</SPAN>X<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="string token">", "</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="token function">Round</SPAN><SPAN class="punctuation token">(</SPAN>pnt_centr<SPAN class="punctuation token">.</SPAN>Y<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="string token">")"</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>

<SPAN class="keyword token">return</SPAN> result<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Returns this result:

All comments

XanderBakker

Try this:

Expression:

<SPAN class="keyword token">var</SPAN> poly <SPAN class="operator token">=</SPAN> <SPAN class="token function">Geometry</SPAN><SPAN class="punctuation token">(</SPAN>$feature<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="keyword token">var</SPAN> result <SPAN class="operator token">=</SPAN> <SPAN class="string token">""</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="operator token">!</SPAN><SPAN class="token function">IsEmpty</SPAN><SPAN class="punctuation token">(</SPAN>poly<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">var</SPAN> pnt_centr <SPAN class="operator token">=</SPAN> <SPAN class="token function">Centroid</SPAN><SPAN class="punctuation token">(</SPAN>poly<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="token function">Console</SPAN><SPAN class="punctuation token">(</SPAN>pnt_centr<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; result <SPAN class="operator token">=</SPAN> <SPAN class="string token">"("</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="token function">Round</SPAN><SPAN class="punctuation token">(</SPAN>pnt_centr<SPAN class="punctuation token">.</SPAN>X<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="string token">", "</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="token function">Round</SPAN><SPAN class="punctuation token">(</SPAN>pnt_centr<SPAN class="punctuation token">.</SPAN>Y<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="string token">")"</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>

<SPAN class="keyword token">return</SPAN> result<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Returns this result:

GusMonteverde1

That worked, and gets me half the way there. I still need those coords formatted to decimal degrees. Is that possible to do using Arcade? I much appreciate all your help so far.

XanderBakker

If you have projected coordinates you cannot currently translate (project) those to geographic coordinates. That might come in the features when more geometric functions will be implemented.

GusMonteverde1

Understood. Thanks again!

Anonymous User

Hey Xander!

Is there a way to change the projection from one projected coordinate system to another in arcade?

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