Latest Contributions by bobongubza

‎02-13-2020

You are right, there was a typo in the code I wrote. Thanks Noah.

‎02-11-2020

I am trying to learn how to access services using OAuth2 with javascript. I am working on the tutorial on this link Access services with OAuth 2.0 | ArcGIS for Developers. Initially, it allows me to sign in (from the sign in link) and provide my arcgis online credentials. Thereafter, I am getting the error below after I have entered my arcgis online credentials. I followed the steps of creating, registering and providing a redirect uri for the application. I copied the code and changed the portalURL and appid. So I just advice on why I am getting this error

‎07-12-2019

It is the actual layer.

‎07-12-2019

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.

‎07-12-2019

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.

‎07-11-2019

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

‎06-18-2019

Thanks for the response. I tried what you suggested and it works. Thanks a lot.

‎06-14-2019

I created a legend for features on the map in arcgis javascript 4.10. The issue I have is that I can only disable a sublayer's visibility by disabling all the layers within the parent layer on the layerlist. I was wondering is there a way to just disable the visibility of a sublayer without disabling all the sublayers when displaying the legend on a layerlist.

‎03-21-2019

I am creating a website that shows errors of features and errors that have been resolved (fixed). I want to use datareviewer to find this errors. The errors are stored in a MS SQL database. The problem I have is that when errors are fixed, the data reviewer does not automatically remove errors that have been fixed within the database table. I was hoping someone can inform me on whether there is a way to remove errors that have been fixed from the database when datareviewer runs, after the errors have been fixed. The only way I can do so is by removing all records in the database table before datareviewer, but I want to avoid that, because error records that I marked as exceptions will also be removed.

‎02-14-2019

I tried the generalize method but it did not fix the problem I had. The parameters I gave were: generalize = new GeneralizeParameters() generalize.geometries = [pointGraphicSelected.geometry] generalize.deviationUnit = "meters" generalize.maxDeviation = 0.000001

‎02-14-2019

I tried putting the quantize option as false. It works really well with points, but with a polygon there is still a visible geometric error. One other thing, I checked the properties of a feature layer for arcgis javascript 4.10 but quantize is not there. I just wanted to know what is the reason for that.

‎02-14-2019

I am trying to use the view.hitTest function for points, lines and polygons. The selected features look correct at the scale level when a feature was selected, but once I zoom there are visible geometric discrepancies. I had this issue with arcgis javascript 3.27 but someone on geonet suggested I set the autogeneralize as false for the feature layer and it worked. I am now coding with arcgis javascript 4.10 and the method for setting autogeneralize as false is not there (i am assuming it is the same issue) for feature layers. How can I solve this issue.

‎01-25-2019

With ArcGIS Desktop I constantly do transformations due to the fact that I sometimes deal with survey data which uses a coordinate system that is local to South Africa, thus converting it to geographic coordinates of WGS84 is often done. But no worries I studied coordinate system transformation and it was focused on the coordinate systems I want to transform so I'll look through my past lecture notes and just write an algorithm that will do the transformations. Thanks Robert

‎01-24-2019

I am using solely on arcgis javascript. The website that I am designing has to allow people to enter coordinates in Gauss Conform (Transverse Mercator south oriented) coordinate system and convert them to GCS haartebeesthoek 94. So my parameters are as follows: projectParameter = new ProjectParameters() projectParameter.geometries = new Point({x: value, y: value, new spatialReference({wkid:102482})) projectParameter.outSpatialReference = new SpatialReference({"wkid": 4148}) honestly I don't what this two parameters, projectParameter.transformation and projectParameter.transformforward assist with, with regards to the projection.

‎01-24-2019

Yes and I cannot figure out why. I am at a point of manually coding the transformation between the coordinate system.

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Date Last Visited	‎12-29-2020 12:56 PM

My Ideas

Latest Contributions by bobongubza

Re: Issue attempting OAuth2

Issue attempting OAuth2

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

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

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

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

Re: Disabling visibility of a sublayer on the layerlist

Disabling visibility of a sublayer on the layerlist

Removing Error Records That Have Been Fixed Using Datareviewer

Re: Hit Test Graphic Returned Has Geometry Issue

Re: Hit Test Graphic Returned Has Geometry Issue

Hit Test Graphic Returned Has Geometry Issue

Re: Converting Point From A Projected Coordinate System to A Geographic Coordinate System

Re: Converting Point From A Projected Coordinate System to A Geographic Coordinate System

Re: Converting Point From A Projected Coordinate System to A Geographic Coordinate System

Re: Issue attempting OAuth2

Re: Disabling visibility of a sublayer on the laye...