topic Re: ArcGIS Online Label placement using Arcade language in Developers Questions

ArcGIS Online Label placement using Arcade language

JasonSmith6 — Wed, 01 Mar 2017 14:51:12 GMT

Is there any syntax in the new Arcade language that can but used with labels in AGO that will tell certain features to label to the left, certain features to label to the right, etc? The problem I'm having is I have several facilities that are congregated in a particular area pretty tightly, and it would help to place some of the labels in different positions around their corresponding feature.

Up until now the only way I've been able to get around this is to create duplicate layers, and label each one "Facilities - Left Labels", "Facilities - Right Labels", etc. But I'd rather not do this if I could write the code a certain way within just one feature layer. Here's the code I've got so far that only shows certain labels for features in a layer (thanks to Kelly Gerrow @ ESRI):

if ($feature.Facility_short == “Green River Plant”) {return “Green River Plant”}
else if ($feature.Facility_short == “Red Creek Mine”) {return “Red Creek Mine” }
else if ($feature.Facility_short == “Blue Mountain Refinery”) {return “Blue Mountain Refinery” }
else if ($feature.Facility_short == “Yellow Enterprises”{return “Yellow Enterprises” }

Thank you all for any help you can provide!

Jason

Re: ArcGIS Online Label placement using Arcade language

KenBuja — Sat, 11 Dec 2021 15:49:56 GMT

I don't have an answer to your positioning question, but you can simplify your code

if ($feature.Facility_short == “Green River Plant” ||
    $feature.Facility_short == “Red Creek Mine” ||
    $feature.Facility_short == “Blue Mountain Refinery” ||
    $feature.Facility_short == “Yellow Enterprises”) {
  return $feature.Facility_short
}‍‍‍‍‍‍

Too bad Arcade doesn't seem to support "in"

Re: ArcGIS Online Label placement using Arcade language

JasonSmith6 — Wed, 01 Mar 2017 16:21:20 GMT

kenbuja‌

I agree on the "in" front! And thank you for the shortened code! There's just not a lot documentation out there. Just curious, what does the " | |" stand for?

Re: ArcGIS Online Label placement using Arcade language

KenBuja — Wed, 01 Mar 2017 16:32:01 GMT

That's the "Logical or" operator. Here's a full list of the available operators: Logic | ArcGIS for Developers

Re: ArcGIS Online Label placement using Arcade language

JasonSmith6 — Wed, 01 Mar 2017 16:44:03 GMT

kenbuja‌

Thank you again! So I assume you can use this || for as many OR statements as you want? The documentation says one of two, but obviously this code example above shows we can do more than 2.

Re: ArcGIS Online Label placement using Arcade language

KenBuja — Wed, 01 Mar 2017 17:12:45 GMT

Yes, you should be able to put as many in as you like. For example, this code

if ($feature.Habitat == "HARD" ||
    $feature.Habitat == "AGRF" ||
    $feature.Habitat == "SCR") {
        return $feature.Habitat
    }

yields this map

Re: ArcGIS Online Label placement using Arcade language

MichaelMiller2 — Wed, 01 Mar 2017 18:29:52 GMT

This stuff is nice. What I'm wondering is where you are using this code, in the symbology, labels? I would like to use this in AGOL maps, but am not clear how to go about actually doing it.

Sorry to hijack the post with another question.

Re: ArcGIS Online Label placement using Arcade language

JasonSmith6 — Wed, 01 Mar 2017 18:37:42 GMT

kenbuja‌

FANTASTIC !!!! You have been such a valuable resource! 🙂

Re: ArcGIS Online Label placement using Arcade language

JasonSmith6 — Wed, 01 Mar 2017 18:41:30 GMT

Michael Miller‌

No problem at all! I'm using this code in the Labels. When you Manage Labels, you choose "Custom (Expression)" from the drop-down menu for Text.

Here's another good resource I was forwarded to:

https://developers.arcgis.com/arcade/guide/logic/#if-statements

Let me know if you have any other questions and I'll try to tell you what I've learned.

Re: ArcGIS Online Label placement using Arcade language

MichaelMiller2 — Wed, 01 Mar 2017 19:07:19 GMT

Thank you Jason!

Re: ArcGIS Online Label placement using Arcade language

KristianEkenes — Sat, 11 Dec 2021 15:49:59 GMT

Sorry. Syntax error. Here's the corrected version of an alternate approach somewhat similar to IN:

var items = [ “Green River Plant”, “Red Creek Mine”, “Blue Mountain Refinery”, “Yellow Enterprises” ];
IIF ( IndexOf(items, $feature.Facility_short) > -1, $feature.Facility_short, null);
‍‍‍‍‍

Re: ArcGIS Online Label placement using Arcade language

JasonSmith6 — Thu, 16 Mar 2017 21:56:27 GMT

Thank you Kristian! One more request. Do you know the code to tell certain labels to show up to the left of a point, certain labels to the right, etc? I noticed on one of the documentation pages there was something called “labelplacement”, but I’m not sure if this is code that can be used in ArcGIS Online or not. If you know, then that would solve my last problem! Otherwise, I was just going to duplicate the Master Facility layer, and create duplicative layers called “Master Facility – Left Labels”, “Master Facility – Right labels” etc. And then hide those duplicative layers in the Web App Builder and from the Legend.

Thank you again for your help!!!

Re: ArcGIS Online Label placement using Arcade language

KristianEkenes — Thu, 16 Mar 2017 23:29:56 GMT

I don't believe you can configure label placement using Arcade syntax (yet). I just use label classes to handle placement as this sample demonstrates: Label features using Arcade expressions | ArcGIS API for JavaScript 3.20

Note that ArcGIS Online only supports adding one label class per layer. I'm not sure if support for adding more will be added in the future, but in the mean time I would configure this in the custom app or template. Otherwise you can also use the approach you described. Hope that helps!

Re: ArcGIS Online Label placement using Arcade language

JasonSmith6 — Mon, 20 Mar 2017 14:16:12 GMT

Kristian, thanks so much again! Yes I figured it was probably an issue with the version of JavaScript ArcGIS Online uses. Hopefully they will add support for labelplacement syntax in a future update. For now, I'll just to have to stick with my multi-layer solution.

Re: ArcGIS Online Label placement using Arcade language

MichaelMiller2 — Fri, 07 Apr 2017 16:17:37 GMT

Jason,

How do you use TextFormatting.Newline? Attempting to use this in Labels and it is not honoring the newline.

Using:

$feature.Sta_Num + TextFormatting.NewLine + $feature.Sta_Name

Re: ArcGIS Online Label placement using Arcade language

KenBuja — Fri, 07 Apr 2017 16:41:37 GMT

Newline doesn't work right now. Take a look at this discussion: https://community.esri.com/message/658173-re-arcade-text-constant-for-textformattingnewline-is-adding-space-instead-of-new-…

Re: ArcGIS Online Label placement using Arcade language

MichaelMiller2 — Fri, 07 Apr 2017 16:54:08 GMT

Thanks for the headsup kenbuja

Re: ArcGIS Online Label placement using Arcade language

JenniferStone — Tue, 25 Apr 2017 17:58:01 GMT

I know this post doesn't exactly cover my question but it does have to do with labeling. I have a point feature class for tax map annotation, with a text string and an angle field. I am trying to get that to label properly using the arcade custom expression. I can't seem to find anything telling me how to do this, although I do see several references which state that this can be used for label rotation display. Help, please!