Questions tagged [color]

The property possessed by an object of producing different sensations on the eye as a result of the way it reflects or emits light

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2
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1answer
39 views

How to change the color of polygon with Leaflet in real time? [duplicate]

I am trying to display a polygon from an external GeoJSON file, the data loads but does not update the polygon in real time with "nivel". The polygon is added but color is not updated after ...
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0answers
40 views

Apply custom colors for new vector layers in QGIS

I am trying to have a custom color palette applied when new vector layers are added. This is for use within a default project or template. But every time I load a vector layer, it chooses from the &...
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1answer
16 views

Color gradient in raster symbology using ArcGIS Pro

I'm using ArcGIS Pro 2.8. I have a raster, shown below, whose data I would like to show in a smooth, detailed manner, like in the second raster shown. I recognize that the second raster has a much ...
2
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1answer
27 views

DXF rending in QGIS independently of symboloys

I have imported a DXF file from AutoCAD into QGIS 3.20 and it has applied the rendering that it had in AutoCAD. I am trying to figure out how QGIS detects these settings so that when I run a process ...
4
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2answers
103 views

Setting different font color types from the same field in rule-based labeling in QGIS

Trying to set different font color types from the same field in rule-based labeling in QGIS. I have a "C°" field with only 2 values: +56.7 C° and -89.2 C°. Trying this expression to have it: ...
2
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1answer
70 views

Usage of QgsRuleBased3DRenderer with PyQGIS

I'm trying to use QgsRuleBased3DRenderer with PyQGIS in order to set different color in a 3D view. I'm trying to make something similar to this but with the 3D syntax (here is the 3D syntax: https://...
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0answers
55 views

QGIS - label color setting

I use rule-based labeling with geometry generator on line layer. I use expression @symbol_color, because I want to have color of labels the same as color of lines. However, @symbol_color doesn't work ...
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2answers
61 views

Making bivariate proportional symbol map in QGIS

I have data on two characteristics for a particular variable, say volume and quality. I want to plot these using proportional symbol map in QGIS. For Volume, I could plot using: Symbology -> ...
2
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1answer
58 views

Setting a label color of zoom extent in QGIS

I set a frame color of zoom extent at print layout-properties-overview when I use atlas. How can I set a label color of the number this particular zoom extent to be the same as zoom extent frame?
3
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1answer
60 views

QGIS overview map of atlas - setting a color

I have an overview map of atlas in atlas print layout. How can i set an automatic change of color for atlas map in overview map? E.G. I have 600 atlas maps. In oveview map every atlas map is a polygon ...
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0answers
26 views

QGIS use the exact defined color for text labels and get rid of unused color when exporting as png

When I export QGIS layer as PNG images, I notice that the edges of the text labels are not clean. There's always a zig-zag effect on the edge. And this in turn introduces a lot of unused colors that ...
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1answer
42 views

Changing symbol and color of vector Layer using QGIS 3 C++ APIs

I am trying to change the default symbol for the point/line/ polygon vector layer using QGIS3 C++ APIs. I was able to render a vector layer with default symbols on QgsMapCanvas. When I try to change ...
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2answers
96 views

QGIS Python API set label color based on attribute field

I'm trying to set the text label color and size based on the attribute table. I got the size setting correctly but not the color. My current result looks like this (The symbol has been set to be ...
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0answers
16 views

Tool to colorize Pointcloud from 360° Laserscann

I have a Pointcloud with panoramic images that I want to colorize. What tools could I use for this. I looked into PDAL but from what I read, PDAL needs orthographic pictures. Is there another tool ...
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0answers
28 views

Coloring heat map, with custom characteristics

I need to color a "heat map", with these characteristics: "Pseudocolor monoband", "Discrete" and with two levels: <= "STATISTICS_MEAN" -> Color 255/255/...
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0answers
20 views

What do the quantitative values for the colour ramp gradient for heatmap style in the layer properties for QGIS signify?

I would like to understand whether any quantitative values can be extracted when using the heatmap style in the layer properties? I assume areas with colours related to 1 are areas which have the ...
3
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1answer
118 views

Setting transparency for range of colors in raster layers in QGIS

The starting point: Loading a raster to QGIS, you can set individual colors to transparent in the Panel Layer styling / Tab Transparency by activating the icon Add values from display and click on the ...
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1answer
54 views

How to programmatically create a bivariate choropleth in d3.js?

Question and Situation I'm using d3.js to visualize some data on a map. The user clicks on one checkbox and all path elements get filled according to a color-preset, which all works fine. Now what we ...
1
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1answer
29 views

Switching between symbologies for two different fields quickly in ArcGIS Pro

I'm trying to quickly switch between two different coloring schemes for my map quickly. I have a map filled with several polygons that are colored according to a particular field. The image for that ...
0
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1answer
51 views

How to set polgon fill type to no color in Mapbox

I'm new to Mapbox and I am trying to remove any color in my polygon fill using the Mapbox API. Note: I don't want to set opacity/transparency. I simply want there to be no color. It keeps defaulting ...
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0answers
23 views

Merging TIFF images based on any of the single images

I have lot of tiff images for a small area. I need to merge all the images based on any one of the image(for color ref). Actually we merge the data in QGIS but all images all slightly variation in ...
1
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1answer
55 views

How can I do to export shapefile with symbology.svg COLORED to DXF format?

I created a shapefile categorized by characteristics, and I assigned to each element a SYMBOL.svg COLORED with Design Effects. I want to export the shape with the characteristics of the colored ...
5
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1answer
198 views

Colours for positive and negative values in a raster layer in QGIS

I've got a raster layer in QGIS 3.10. It's statistics are the following (hopefully understandable although in Spanish): Valor mínimo: -0.36928805708885193 Valor máximo: 0.6040433645248413 Intervalo: 0....
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0answers
56 views

Generate N distinct colors which (alpha) blend in a nice manner when overlaying an orthophoto or a map

I have N polygons (let N = 3 for making it simple) to display onto a base map in an OpenLayers application (but this can also naturally be applied to other GIS softwares as well). For the moment, I ...
7
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2answers
311 views

Generating random muted/pastel colours using QGIS

Is there any way of generating random softer colours using QGIS? I've just spent some while looking, unsuccessfully. There seems to be no way to influence the "seed" colour if they're random ...
2
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1answer
50 views

QGIS 3.4 Vertex tool highlight colour change

I can change the colour for selected items fine. I have even figured out how to change the colour of the preview when moving a vertex. How can I change the colour of the highlight when hovering over a ...
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0answers
51 views

Color-correcting/matching 4-band PlanetScope imagery

I've been trying to color correct/match 4-band (R, G, B, NIR), 3m resolution Planetscope surface reflectance imagery in order to create a mosaic for land-cover classification. At this point, I believe ...
3
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2answers
297 views

Colouring points in the same colour as their nearest point/polygon from another layer in QGIS

I got two files, a multi-polygon file with polygons and points (File 1) and a file with points only (File 2). Our task is to fill the color of the points from File 2 with the respectively nearest ...
3
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0answers
69 views

Setting transparency color in Expression Builder

Using QGIS 3.16, I am trying to set color through expression builder, using #RRGGBBAA format. The problem, I was using the same color, let's say '#94AFDCff', it should return the same color as '#...
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1answer
206 views

Use multiple colors in the same OpenLayers label

I made the following code that assigns a style to the field labels. Now I would like each word or group of words in the label to be a different color previously selected by the user. For example if we ...
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0answers
51 views

Change color single layers OpenLayers

I want to change the color to a layers after the user has selected the color from the interface what have I done so far: var imobile = new ol.layer.Vector({ source: vectorSource.teren }); $('...
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1answer
18 views

Giving points in the same delimited text layer multiple colours-while using point displacement

I want to give multiple colours to points within the same delimited text layer, while using point displacement, looking for advice on how best to do this. The data are showing occurrences of a variety ...
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0answers
17 views

Showing legend with categories using a hexadecimal color scheme

I have a polyline vector layer with in one column the route number (of the bus) and in another the hexadecimal color (eg 'FF88AA'). Preview: I know how to style the file but only by using the single ...
1
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1answer
628 views

Assigning symbol and colour to attributes using Arcade expression and ArcGIS Online

I would like to use an Arcade expression in ArcGIS Online web maps to assign a symbol and a colour to different attributes. For example, if the attribute value is 'yes': the symbol is round and has a ...
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0answers
32 views

Color change loading GeoTIFF into QGIS

I have a JPEG RGB map image composed of 12 colours produced by a programme using a colour palette. It converts correctly to a modified TIFF, which prints out correctly. But when this is loaded into ...
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0answers
52 views

Importing colour map from .text file which will then correspond to geologic shapefile on QGIS 3.10.6

I have been searching for this solution for over a week now and have tried many of the suggested solutions online but so far northing has worked. I have a Geology vector layer and a corresponding RGB ...
2
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3answers
163 views

Categorized symbology for polygons using QGIS

In QGIS (using ver. 3.16) , you can use the categorized symbology renderer for polygons to assign a certain color to polygons with the same attribute value. There is also the Topological coloring ...
2
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0answers
46 views

Adding colour range to grid in QGIS

I am doing some mapping for vegetation monitoring across a site. I have divided the property up into quadrats using the create fishnet grid function at the size I wanted. I have then intersected it ...
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0answers
395 views

Converting a GeoTIFF image from RGB to gray scale using Rasterio or GDAL in Python

I was using PIL to convert some images from RGB to gray scale in Python, but this code does not work well for GeoTIFF files. It seems that PIL does not seem to work with with GeoTIFF files in ...
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1answer
203 views

Changing the color of every entity of GeoJSON layer in OpenLayers 6.4.3

I would like to change the color of every entity of my GeoJSON, like in the picture. For now I can just change all the features with the same color. Here is my code: const provinceGeoJSON = new ol....
3
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2answers
555 views

Changing (or just inverting) Basemap Colors in QGIS

I am building a vector (strava routes) map using QGIS and the Stamen Toner OSM Basemaps but want to edit it to change the colors of the baseman slightly. Is this possible? I see Arc seems to have a ...
2
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0answers
13 views

Solving color correction of LISS IV Multispectral image

I have a LISS IV multispectral images (radiometric resolution of 10 bit per pixel) taken in different months 4 tile in January and 2 tiles taken in February. While mosaicing, I got a different color ...
4
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2answers
318 views

Grading layers according to CMYK color codes in Attribute Table

I have been trying for some time to color grade a geological map according to CMYK values given in the attribute table. I have not yet succeeded. I am certain that is just a simple line of code that ...
3
votes
1answer
58 views

Modifying highlight color of identify but from the startup file

I want to do it in programming, I use PyQGIS. I was researching what the class uses qgis.gui.QgsHighlight (mapCanvas:QgsMapCanvas, geom:QgsGeometry, layer:QgsMapLayer) But I would like to do this ...
0
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1answer
40 views

Control the colours of shapefiles loaded to Geoserver? [duplicate]

I have a set of shapefiles loaded to GeoServer, which I later deliver as a WMS. All the shape files are rendered in the same neutral grey, which makes it quite difficult to tell apart which shape file ...
2
votes
1answer
66 views

Making colours from table with colour percentages/RGB-codes

Currently, we have a big dataset imported in our QGIS profile. Normally we would have imported this by WMS but because this particular WMS/WFS consists of more than 20 parts and the data is ...
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0answers
97 views

Is it possible to display the embed color palette of a TIFF file using earthPy?

I try to display a map that I have created. This map embed a color palette that I can read in QGIS to obtain directly this kind of display : I discovered recently that I can as well directly plot ...
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0answers
46 views

Customize color pallets widget

I use some color palettes (1) that I added through QGIS settings and I would like to know if it is possible to customize how these palettes are displayed in the Layers Properties or any popup widget ...
1
vote
1answer
193 views

Falsecolor raster from multiple rasters in QGIS

How can I combine multiple single band rasters into a falsecolor RGB background in QGIS? I can, of course, use the multiband color renderer to select specific bands, call them A1,A2,A3 from a single ...
3
votes
2answers
119 views

How to have an infinite colour ramp for a choropleth, in QGIS

I have a dataset of land values which, for the full range, is say 125 to 250,000,000, i.e for a whole state. For the user, they will only be seeing on the map canvas, a small subset of this at any one ...

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