topic Re: Sublayers not showing when more than one layer have visible value as true in ArcGIS JavaScript Maps SDK Questions

Sublayers not showing when more than one layer have visible value as true

bobongubza — Thu, 11 Jul 2019 12:14:03 GMT

Something really strange is happening and I do not know why. When I create a new MapImageLayer and call for two sublayers whereas the visible value for both sublayers is 'true' I get an error.

RAILLAYER = new MapImageLayer({
url: "https://rave1:6443/arcgis/rest/services/RAIL/MapServer", sublayers: [

{id: 0,
visible: true,
title: "Railway Station"},

{id: 20,
visible: true,
title: "Railway"}

]
});

When there is one visible value as true (the other false), the sublayer displays.

RAILLAYER = new MapImageLayer({
url: "https://rave1:6443/arcgis/rest/services/RAIL/MapServer", sublayers: [{id: 0,
visible: true,
title: "Railway Station"},

{id: 20,
visible: false,
title: "Railway"}

]
});

The weird thing is that I tried using the sample layer from esri

http://sampleserver6.arcgisonline.com/arcgis/rest/services/911CallsHotspot/MapServer

and it works perfectly when both sublayers visible value are defined as true.

So I just want to figure out what could be the cause of this issue. By the way I am using arcgis javascript 4.10

Re: Sublayers not showing when more than one layer have visible value as true

RobertScheitlin__GISP — Sat, 11 Dec 2021 17:32:27 GMT

Bobo,

Try adding the sublayers in descending order:

RAILLAYER = new MapImageLayer({
  url: "https://rave1:6443/arcgis/rest/services/RAIL/MapServer",
  sublayers: [{
    id: 20,
    visible: true,
    title: "Railway"
  },{
    id: 0,
    visible: true,
    title: "Railway  Station"
  }]
});‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Sublayers not showing when more than one layer have visible value as true

bobongubza — Fri, 12 Jul 2019 07:07:36 GMT

Robert, you are an arcgis wiz. Thank you, it worked.

Could you explain to me why it works in descending order but not in ascending order.

Re: Sublayers not showing when more than one layer have visible value as true

RobertScheitlin__GISP — Fri, 12 Jul 2019 12:26:05 GMT

Bobo,

This is just a known feature with sublayers that is not documented. Don't forget to mark the question as answered.

Re: Sublayers not showing when more than one layer have visible value as true

bobongubza — Fri, 12 Jul 2019 12:37:10 GMT

Before I mark as answered, something strange is still happening.

this works perfectly.

{id: 16,
visible: true,
title: "Highway"},
{id: 10,
visible: true,
title: "Sand Dune"},
{id: 8,
visible: true,
title: "Dams"},
{id: 7,
visible: true,
title: "Rivers"},
{id: 5,
visible: true,
title: "DWAF Water Scheme"},
{id: 4,
visible: true,
title: "Prison"},
{id: 3,
visible: true,
title: "School"},
{id: 2,
visible: true,
title: "Police Station"},
{id: 1,
visible: true,
title: "Health Facility"}

But when my code is like this

{id: 11,
visible: true,
title: "Vegetation"},
{id: 10,
visible: true,
title: "Sand Dune"},
{id: 8,
visible: true,
title: "Dams"},
{id: 7,
visible: true,
title: "Rivers"},
{id: 5,
visible: true,
title: "DWAF Water Scheme"},
{id: 4,
visible: true,
title: "Prison"},
{id: 3,
visible: true,
title: "School"},
{id: 2,
visible: true,
title: "Police Station"},
{id: 1,
visible: true,
title: "Health Facility"}

The same error i received as last time still occurs. Its kind of selective even if it is in descending order.

Re: Sublayers not showing when more than one layer have visible value as true

RobertScheitlin__GISP — Fri, 12 Jul 2019 12:51:16 GMT

Bobo,

What is layer 11? is it an actual layer or a group layer? Are you sure the id 11 is your Vegetation layer?

Re: Sublayers not showing when more than one layer have visible value as true

bobongubza — Fri, 12 Jul 2019 15:13:59 GMT

It is the actual layer.

Re: Sublayers not showing when more than one layer have visible value as true

RobertScheitlin__GISP — Fri, 12 Jul 2019 15:45:17 GMT

Sorry to say this might be a bug then.