Arcade Expressions for Symbology

BrianE

I am just starting to play around with Arcade Expressions and am having some issues using an expression to symbolize a multipatch layer.

 

The layer is building floor numbers (e.g., 1,2,3,4,5,6….) and is a numeric field in Pro.

 

I am using this expression and it works for only 1 floor:

 

if ($feature.FLR_NUM == 20) return true

 

However, I can’t figure it out the correct expression for multiple floors (e.g., I want only floor numbers 10, 13, 20, and 23 to be a color).  I am getting error messages (close parenthesis expected). Or “requested operation could not be completed” even though the expression is valid.

 

Any help would be greatly appreciated.

 

Thanks

XanderBakker

Hi Brian E ,

You could use something like this:

 <SPAN class="keyword token">var</SPAN> floors <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="number token">10</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">13</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">20</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">23</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
 <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="token function">IndexOf</SPAN><SPAN class="punctuation token">(</SPAN>floors<SPAN class="punctuation token">,</SPAN> $feature<SPAN class="punctuation token">.</SPAN>FLR_NUM<SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">></SPAN> <SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
     <SPAN class="keyword token">return</SPAN> <SPAN class="string token">"Floor 10, 13, 20 or 23"</SPAN><SPAN class="punctuation token">;</SPAN>
 <SPAN class="punctuation token">}</SPAN> <SPAN class="keyword token">else</SPAN> <SPAN class="punctuation token">{</SPAN>
     <SPAN class="keyword token">return</SPAN> <SPAN class="string token">"Other floors"</SPAN><SPAN class="punctuation token">;</SPAN>
 <SPAN class="punctuation token">}</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

We start with an array with the floors you are looking for (on line 1). Then we use the IndexOf function to see if the features floor is part of that list and return a text to symbolize on.