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Questions tagged [renderer]

The tag has no usage guidance.

0
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0answers
8 views

Taking snapshot from for loop in PyQGIS 3?

I am pretty new in PyQGIS and programming in general, and I am trying to get images from four different layers. If I do just for one time with Qtimer option, works... but the problem appears when I ...
2
votes
1answer
28 views

ArcGIS Javascript API - Use array of values for breaks in Class Break renderer instead of a range for a Dynamic Layer

I'm trying to use ClassBreak renderer in ArcGIS API v3.27. I have a dynamic layer with ZIP as one of its fields. I would like to add breaks based on the ZIP value. But the class breaks usually don't ...
2
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0answers
65 views

Rendering Google Terrain in QGIS Layout Manager

I am using the Google Terrain map (via XYZ Tiles). This seems to make the system very slow, and when making a .jpeg through the Layout Manager, the Google Terrain will not display (render) when ...
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2answers
387 views

CSVLayer doesn't show HeatMap in Angular 6

I am using ArcGIS JavaScript 4.8 API and I have integrated the CSVLayer to an Angular 6 application but it is not showing up any heat map. The legend shows that it is getting renderer data and heatmap ...
2
votes
1answer
150 views

Heatmap not working on FeatureLayer (ArcGIS JS API 4.8)

I tried my best but didn't get success to show heatmap on FeatureLayer with latest ArcGIS JavaScript API 4.8. My Code is located here. I used HeatMapRenderer to render the point on the map as the heat ...
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1answer
49 views

Error in Geotools renderer

Here is my Java code that generates an error from Geotools renderer: public class LandmarkLayer { protected static final String LANDMARK_FEATURE_NAME = "landmark"; protected static final StyleFactory ...
2
votes
1answer
53 views

Getting “value”, “color”, “label” from existing palette raster layer in PyQGIS?

renderer = activaterlayer.renderer() symboloyitems = renderer.legendSymbologyItems() label = symboloyitems[i][0] color = symboloyitems[i][1].getRgb() value = ? How can I get the ...
2
votes
1answer
66 views

pyqgis: how to get the existing Paletted Raster Layers' color

rasterlayer = QgsRasterLayer(infilename, layername) renderer = rasterlayer.renderer() rasterlayer is the active layer with renderer type is Palette, I want to get current Palette Color, how could I ...
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1answer
149 views

ArcGIS Javascript API - Update Renderer when a Feature Layer record is selected

I'm using ArcGIS JavaScript API to display a map with a feature layer with multiple records. I wrote code to display a pop up when a record is selected on the map. Is it possible to change the color ...
1
vote
0answers
45 views

Creating web map with dynamically rendered symbols for multiple large datasets with ArcGIS?

I am editing an existing ArcGIS Server (v10.2) / Javascript (3x) map-based web app, which has several dynamic map services, some of which contain over 50,000 points. The new web app must be able to ...
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1answer
75 views

Defining per request modification of layer order and symbology using ArcPy?

My web app will (hopefully) use dynamic layers with symbols that are rendered dynamically, based on a user chosen attribute. So far I am doing this by defining a UniqueValueRenderer, then passing ...
1
vote
1answer
59 views

PyQgis Raster Style Editor Dialog

I know that for QgsVectorLayer, there is the QgsSymbolV2SelectorDialog dialog that I can call to allow users to change vector layer's styles. I am looking for an equivalent dialog for QgsRasterLayer. ...