topic Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer in ArcGIS Server with JavaScript API Questions

LabelLayer (API version 3.13) is not working with Line FeatureLayer

sivanadimpalli — Wed, 24 Jun 2015 11:47:37 GMT

LabelLayer (API version 3.13) is not working with Line FeatureLayer and throwing an exception "Cannot read property 'labelRotation' of undefined". But it is working properly in previous version(3.12).

Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer

ChrisSergent — Wed, 24 Jun 2015 13:06:58 GMT

I shared this in the ArcGIS API for JavaScript Space. More people that know about your topic will see it.

Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer

JayantaPoddar — Wed, 24 Jun 2015 15:56:52 GMT

Hi Siva,

This space is for the contents related to Geonet Contest.

You might like to move this thread to ArcGIS API for JavaScript

Steps to move a content is given below.

Moving Content

Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer

TomSellsted — Wed, 24 Jun 2015 16:45:23 GMT

Siva,

Can you please post some of your code for this? The error implies a rotation error, but viewing your code would give me some context to better understand what the problem might be. Thanks!

Regards,

Tom

Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer

sivanadimpalli — Fri, 26 Jun 2015 05:19:27 GMT

Tom,

Below is the sample code for labeling line feature layer. This piece of code works properly if we use 3.12 API.

<!DOCTYPE html>

<html>

<head>

<style>

html, body, #map {

height: 100%; width: 100%; margin: 0; padding: 0;

}

</style>

var map;

require([

"esri/map", "esri/geometry/Extent", "esri/layers/FeatureLayer", "esri/symbols/SimpleLineSymbol", "esri/symbols/SimpleFillSymbol",

"esri/symbols/TextSymbol", "esri/renderers/SimpleRenderer", "esri/layers/LabelLayer", "esri/Color", "dojo/domReady!"

], function(

Map, Extent, FeatureLayer, SimpleLineSymbol, SimpleFillSymbol,

TextSymbol, SimpleRenderer, LabelLayer, Color

) {

map = new Map("map", {

basemap : 'topo',

center: [-119.34563354630382, 35.21648028750361],

zoom: 10

});

var sampleColor = new Color("#0033CC");

var sampleLine = new SimpleLineSymbol("solid", sampleColor, 1.5);

var sampleRenderer = new SimpleRenderer(sampleLine);

var sampleUrl = "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Military/FeatureServer/8";

var sampleLayer = new FeatureLayer(sampleUrl, {

id: "sampleLayer",

outFields: ["*"]

});

sampleLayer.setRenderer(sampleRenderer);

map.addLayer(sampleLayer);

var sampleLabel = new TextSymbol().setColor(new Color("#663300"));

sampleLabel.font.setSize("12pt");

sampleLabel.font.setFamily("arial");

var sampleLabelRenderer = new SimpleRenderer(sampleLabel);

var labels = new LabelLayer({ id: "labels" });

labels.addFeatureLayer(sampleLayer, sampleLabelRenderer, "{objectid}");

map.addLayer(labels);

});

</script>

</head>

<body>

</body>

</html>

Regards,

Siva

Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer

TomSellsted — Fri, 26 Jun 2015 16:51:37 GMT

Siva,

You are correct. It works at 3.12 and does not at 3.13. I dug into the LabelLayer.js to see what might be going on and the layer.options.labelRotation is set to true at 3.12 and is undefined at 3.13. I tried to hack an option setting for labelRotation and it is ignored.

labels[options] = {labelRotation: true};

I have also scoured the documentation and haven't found a proper way to set a labelRotation option. It appears to be a bug or an undocumented property.

Maybe Kelly Hutchins would have a answer?

Regards,

Tom

Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer

KellyHutchins — Fri, 26 Jun 2015 19:48:17 GMT

Siva,

This looks like an issue you should contact Esri Support about. Could be a bug with the current version of the API.

Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer

sivanadimpalli — Tue, 30 Jun 2015 15:06:00 GMT

Tom & Kelly,

Thanks for your time.

I resolved this issue by host the JavaScript API locally and modify LabelLayer.js to handle the layer options error.

Existing code:

"polyline"==f.layer.geometry.type&&f.layer.options.labelRotation?l.setAngle(m*(180/Math.PI)):l.setAngle(0);

Replaced code:

"polyline"==f.layer.geometry.type&&f.layer.options&&f.layer.options.labelRotation?l.setAngle(m*(180/Math.PI)):"polyline"==f.layer.geometry.type&&m?l.setAngle(m*(180/Math.PI)):l.setAngle(0);

I made these changes without distributing the existing logic, and it works for me.

Regards,

Siva

Re: LabelLayer (API version 3.13) is not working with Line FeatureLayer

TomSellsted — Tue, 30 Jun 2015 15:09:24 GMT

Siva,

Glad you found a workaround that will work for you.

Regards,

tom