Expression Arcade pour décoder les valeurs

AndrewL

<\/HEAD>

J'essaie d'utiliser une expression Arcade pour afficher des valeurs codées dans une fenêtre contextuelle dans ArcGIS Online, mais cela ne fonctionne pas. J'utilise le code de l'exemple de decode example<\/A>. Il ne s'affiche pas dans la fenêtre contextuelle. Aucun message d'erreur n'est donné dans la fenêtre contextuelle.<\/P>

<\/P>

var code = $feature.dn;
var decodedValue = Decode(code, 2, 'Non-Severe', 3, 'Marginal', 4, 'Slight', 'Other');<\/P>

<\/P>

Je ne suis pas l'auteur du service de carte. Le champ dn est un esriFieldTypeDouble.<\/EM> Merci.<\/P><\/P><\/EM><\/P><\/BODY><\/HTML>

kenbuja

You needed to state what value to return. See the documentation about this.

<SPAN class="keyword token">var</SPAN> code <SPAN class="operator token">=</SPAN> $feature<SPAN class="punctuation token">.</SPAN>dn<SPAN class="punctuation token">;</SPAN>
<SPAN class="keyword token">var</SPAN> decodedValue <SPAN class="operator token">=</SPAN> <SPAN class="token function">Decode</SPAN><SPAN class="punctuation token">(</SPAN>code<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Non-Severe'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">3</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Marginal'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">4</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Slight'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Other'</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
decodedValue<SPAN class="punctuation token">;</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍&nbsp; <SPAN class="comment token">//return decodedValue; also works‍‍‍</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

or it could be a single line expression.

<SPAN class="token function">Decode</SPAN><SPAN class="punctuation token">(</SPAN>$feature<SPAN class="punctuation token">.</SPAN>dn<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Non-Severe'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">3</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Marginal'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">4</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Slight'</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'Other'</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>‍‍‍‍
<SPAN class="comment token">// return Decode($feature.dn, 2, 'Non-Severe', 3, 'Marginal', 4, 'Slight', 'Other');‍‍‍‍ to be more explicit</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>