Hello all, I have a map with two polygon layers and a point layer. One polygon layer is isochrones representing how far someone can go on public transit using current schedules. The second polygon layer is isochrones representing how far someone can go with increased frequency. The point layer contains points of interest. Some of these points can be reached by both polygons, some are only reached by one polygon, and some are not reached by either polygon. I'm trying to build an expression that I can use in the pop-up that will tell the viewer if that point can be reached using the current schedule, the increased frequency schedule, both, or neither. Below is the expression: var current = FeatureSetByName ( $map , "Jane with Current Schedules" ) var increased = FeatureSetByName ( $map , "Jane with High Frequency" ) var Jane_current = Intersects ( $feature , current ) var Jane_increased = Intersects ( $feature , increased ) var both_Janes = Iif ( Jane_current == Jane_increased , 'true' , 'false' ) When ( both_Janes == 'true' , 'This location can be reached by Jane using the current and increased frequency schedules.' Jane_current == true , 'This location can be reached by Jane using the current public transportation schedules.' , Jane_increased == true , 'This location can be reached by Jane using the increased frequency schedule.' , 'This location cannot be reached by public transportation.' ) When I try to run this, I get the following error: Parse Error:Line 9: Unexpected identifier If I put a Count function around the intersects, it returns the correct count, so I'm confused why I'm getting an error on Line 9 when I call Jane_current in the When function. Any help would be appreciated. Miguel

nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Help with Arcade Expression

Miguel-Fernandez

Hello all,

I have a map with two polygon layers and a point layer. One polygon layer is isochrones representing how far someone can go on public transit using current schedules. The second polygon layer is isochrones representing how far someone can go with increased frequency. The point layer contains points of interest. Some of these points can be reached by both polygons, some are only reached by one polygon, and some are not reached by either polygon. I'm trying to build an expression that I can use in the pop-up that will tell the viewer if that point can be reached using the current schedule, the increased frequency schedule, both, or neither. Below is the expression:

<SPAN class="keyword token">var</SPAN> current <SPAN class="operator token">=</SPAN> <SPAN class="token function">FeatureSetByName</SPAN><SPAN class="punctuation token">(</SPAN>$map<SPAN class="punctuation token">,</SPAN><SPAN class="string token">"Jane with Current Schedules"</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="keyword token">var</SPAN> increased <SPAN class="operator token">=</SPAN> <SPAN class="token function">FeatureSetByName</SPAN><SPAN class="punctuation token">(</SPAN>$map<SPAN class="punctuation token">,</SPAN><SPAN class="string token">"Jane with High Frequency"</SPAN><SPAN class="punctuation token">)</SPAN>

<SPAN class="keyword token">var</SPAN> Jane_current <SPAN class="operator token">=</SPAN> <SPAN class="token function">Intersects</SPAN><SPAN class="punctuation token">(</SPAN>$feature<SPAN class="punctuation token">,</SPAN>current<SPAN class="punctuation token">)</SPAN>
<SPAN class="keyword token">var</SPAN> Jane_increased <SPAN class="operator token">=</SPAN> <SPAN class="token function">Intersects</SPAN><SPAN class="punctuation token">(</SPAN>$feature<SPAN class="punctuation token">,</SPAN>increased<SPAN class="punctuation token">)</SPAN>
<SPAN class="keyword token">var</SPAN> both_Janes <SPAN class="operator token">=</SPAN> <SPAN class="token function">Iif</SPAN><SPAN class="punctuation token">(</SPAN>Jane_current <SPAN class="operator token">==</SPAN> Jane_increased<SPAN class="punctuation token">,</SPAN><SPAN class="string token">'true'</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'false'</SPAN><SPAN class="punctuation token">)</SPAN>

<SPAN class="token function">When</SPAN><SPAN class="punctuation token">(</SPAN>both_Janes <SPAN class="operator token">==</SPAN> <SPAN class="string token">'true'</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'This location can be reached by Jane using the current and increased frequency schedules.'</SPAN>
Jane_current <SPAN class="operator token">==</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'This location can be reached by Jane using the current public transportation schedules.'</SPAN><SPAN class="punctuation token">,</SPAN>
Jane_increased <SPAN class="operator token">==</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'This location can be reached by Jane using the increased frequency schedule.'</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'This location cannot be reached by public transportation.'</SPAN><SPAN class="punctuation token">)</SPAN>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<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>‍</SPAN></SPAN>

When I try to run this, I get the following error: Parse Error:Line 9: Unexpected identifier

If I put a Count function around the intersects, it returns the correct count, so I'm confused why I'm getting an error on Line 9 when I call Jane_current in the When function.

Any help would be appreciated.

Miguel

Trouver plus de publications taguées avec

Accepted answers

kenbuja

You're missing a comma at the end of this line

<SPAN class="token function">When</SPAN><SPAN class="punctuation token">(</SPAN>both_Janes <SPAN class="operator token">==</SPAN> <SPAN class="string token">'true'</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'This location can be reached by Jane using the current and increased frequency schedules.'</SPAN>‍

All comments

kenbuja

You're missing a comma at the end of this line

<SPAN class="token function">When</SPAN><SPAN class="punctuation token">(</SPAN>both_Janes <SPAN class="operator token">==</SPAN> <SPAN class="string token">'true'</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="string token">'This location can be reached by Jane using the current and increased frequency schedules.'</SPAN>‍

Miguel-Fernandez

Ken,

Thank you so much for spotting that!! I can't tell you how many times I went through this.

Miguel

Miguel-Fernandez

I will say that my expression does not produce the desired results. All points say that "This location cannot be reached by public transportation." So if you come across this post and know what might be causing that, feel free to let me know!

kenbuja

This works properly in the Arcade playground, changing the various permutations of true and false

var Jane_current = true;
var Jane_increased = true;

var both_Janes = Iif(Jane_current && Jane_increased,true,false)

When(both_Janes == true,'This location can be reached by Jane using the current and increased frequency schedules.',
Jane_current == true,'This location can be reached by Jane using the current public transportation schedules.',
Jane_increased == true,'This location can be reached by Jane using the increased frequency schedule.','This location cannot be reached by public transportation.')‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Rejoindre la conversation

Les membres connectés peuvent publier, suivre les mises à jour, et plus encore. Nouveau ici ? Inscrivez-vous gratuitement.

Liens rapides

Community Help
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.