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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0answers
21 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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29 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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43 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....
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2answers
58 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 ...
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31 views

Editing processing toolbox algorithm “Vector Layer Histogram” output

I have a vector/shapefile layer with around 1500+ individual symbols. Each symbol has an attribute 'EVIMean' that I need to use for a histogram and it is a numeric value. I first tried the default ...
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8 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 ...
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2answers
103 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
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1answer
47 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 ...
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1answer
33 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 ...
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1answer
46 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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32 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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39 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 ...
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1answer
39 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 ...
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10 views

In ArcGIS Pro, how can I transfer the color scheme to other maps so that the same color is maintained for each class?

In ArcGIS Pro, how can I transfer the color scheme to other maps so that the same color is maintained for each class? For example 2,1-4,0 degrees Celsius "deep blue". Class 4,1-6,0 "...
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2answers
88 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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0answers
39 views

Changing color symbol legend by field

I changed the color of the polygon symbology with a specified field. Now, I need to categorize the symbology for better data management and to be displayed on a map. But, this not change the legend ...
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43 views

Export to PNG produces wrong color background (but not for JPG)

I need to export a map as a PNG image, but when I do the background, which is supposed to be white, comes out gray. This also happens when I export it as a TIFF or EMF, but not as a JPG. I have tried ...
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16 views

Getting currentfeature's color in Expression Builder of QGIS 3.xx

I want to obtain the color code of the current feature like this : Getting currentfeature's color in Expression Builder of QGIS? But I am in QGIS 3.14 and I dont understand how to convert the ...
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31 views

Continuous colour gradient within line segments in a vector layer

I am new to QGIS (using version 3.13) and my main objective with it is easy to explain: creating a line vector (multiple points, representing a river) in which the colour of the line changes based on ...
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23 views

TIFF image merge colour distortion

I am trying to merge 4 TIFF files and the resulting merge is coming out with some odd colour distortions. Does anyone know how to resolve this?
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1answer
11 views

Generating a graphic for publication: How to change color and border weight of shapefiles in ArcGIS Pro 2.4.0?

I am trying to generating a graphic for publication. I am using ArcGIS Pro 2.4.0, and I am trying to draw a border around experiment plots using a rectangular shape file. As can be seen in the below ...
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22 views

R nightlights color palette blue to yellow

I would like to plot nighttime light images in R using traditional NASA used color palette from blue to yellow. Does this color palette exists in any package?
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2answers
59 views

Randomly coloring provinces in country map? [closed]

I have created a map of a country in QGIS. How do I color the province individually ? Is there a quick way to randomly coloring all the province of a country. I am using the "...
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0answers
30 views

Customize colors, symbols and point sizes by different attributes using ArcMap

I am using and extremely new to ArcMap. I have some data with have two major attributes: geological group name, and estimated vegetation coverage classification names. The vegetation classes are ...
2
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1answer
57 views

Cannot set the natural color for Sentinel-2 raster data

I'm trying to create a new raster data with nature color (B4-B3-B2) for the left raster data in QGIS 3, however, I failed. This should be similar to the right one. Both of them were downloaded from ...
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1answer
23 views

Applying a Single Gradient Fill Color to a multipart feature

So I have an indicatrix covering a world map for the purpose of illustrating distortions for different projections. I want the circles of the indicatrix to share the same gradient fill color, as ...
3
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1answer
160 views

Multi-labelling with different colors in QGIS 3.10

I would like to create a multi-field label based on an expression where the different fields will have different colors. Using an icon font, this will allow me to get this kind of result (done with ...
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0answers
14 views

Style layers by attribute in AGOL? (Symbolgy by attribute/ color by attribute)

How do I in AGOL set the colors by attribute? aka let the attribute value determine the color of features within a feature layer. I have an attribute which contains the color values I need for about ...
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1answer
123 views

Scripting color palette to align with corresponding classes from supervised classification in Google Earth Engine

When I display my classification map, the colors don't line up with the variable that I want them to. For example, my forest category is represented as red (instead of my goal color-green), or my ...
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0answers
39 views

ArcGIS Pro .pdf export - Colors are wrong

I am exporting a .pdf map from ArcGIS Pro (2.5) and the coloring is coming out completely different when I open it in in Adobe Acrobat. (Pictures below) It seems like this is only a problem on my ...
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1answer
24 views

PHOTOMETRIC tag not producing expected result

Code takes a netCDF4 file and converts the data to GeoTiff: import numpy as np, sys from osgeo import gdal from osgeo import osr import netCDF4 f=netCDF4.Dataset("mydata.nc") time = f.variables["...
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23 views

Convert 1-band .nc file to GeoTiff with RGB

How can I convert 1-band .nc file to GeoTiff with RGB? I have tried using gdal translate but it won't let me apply color interp of RGB to the .nc as it has 1 band.
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35 views

Plotting the third variable in R

I want to plot my trajectories using geom_path, by having the changes of speed (in each trajectory) in colorRampPalette. I have seen such a plot, but I do not know how to make it. Here is my current ...
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1answer
29 views

Formatted Text Color Options

I'm trying to see what color options I have for formatted text for arcgis desktop 10.5. Mostly I'm trying to get these colors to work in a legend text string. I know the basic color options: <CLR ...
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2answers
38 views

Auto colour change after changing polygon geometry using ArcGIS Pro

I am using ArcGIS Pro. Is it possible to change polygon colour after i change it's geometry? For example, if there were five vertices, the figure is green, and after i change it to be four vertices ...
2
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1answer
33 views

If I selected (highlight) a feature or points would I be able to color that feature as as it is being highlighted?

The points on purple and lightgreen area I want to maintain them reds. The points outside that I want to color them yellow not just the highlighted ones. How can I do that?
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121 views

Using pyshp to create line shapefiles with color

I am using PyShp to create line shapefile in Python. w = shapefile.Writer('shapefiles/line') w.field('name', 'C') w.line([ [[3,2],[2,6]] ]) w.record('linestring1') w.close() Is there a way to ...
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2answers
153 views

Change the color of a feature with PyQGIS?

I want to iterate through a field and based on the attributes, assign a color to the feature. I can find how to change colors of a layer, but not for a single feature. Code below. from PyQt5.QtGui ...
2
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1answer
49 views

Adjusting brightness/contrast for XYZ Tile Data

Is there a way to adjust brightness and contrast for XYZ tile data in QGIS 3.4? Specifically, I'd like to adjust the settings for the Google Imagery Hybrid XYZ tile. I'm running QGIS on Windows 10.
2
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1answer
35 views

Outputting colour associated with category in text format

I've written a plugin which randomly generates fill colours for differing categories. I'm wondering if there's a way to iterate through the category renderer and output the RGB colour as text. I have ...
2
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0answers
383 views

Merge *.png files into one using GDAL

I built a Python script that downloads tiles from some map service. This service cannot be imported to QGIS as a tile layer so I decided to download tiles directly using requests module. The script ...
0
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1answer
735 views

Change palette color in Google Earth Engine

I've modified this code: https://code.earthengine.google.com/?scriptPath=Examples:User+Interface/Split+Panel but I can't change the maps color pallet This is the color pallet that I want to use: var ...
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2answers
106 views

Mapping RBG color to coordinate possible?

I work with geologists who are trying to figure out how to use Qgis to batch apply colour values to coordinates so that we can visually see differences or patterns. From the attached photo of soil ...
1
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1answer
444 views

Set bar colors on a Google Earth Engine chart

I am trying to define a set of colours by month on a ui.Chart.image.series, however, after adding the .style line, no changes are made. I would like to have a different bar color for each month, the ...
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0answers
55 views

Take color from other layer with data-override/expression

QGIS 3.8, Win. 10. In addition to a question asked earlier, I want to set the color of text-buffers to adapt to the color from another layer in the background. I have a shapeburst-style background (...
2
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1answer
57 views

Changing color of columns names in query builder

Does anybody know if it is possible to change the colors of the names of the columns (attributes) when writing a query in QGIS? (e.g. when selecting by expression in the attributes table).
3
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6answers
690 views

Rule based coloured background for labeling in QGIS

I am a newbie working on QGIS 3.6 / Windows 10. I need to label a polygon layer which is categorised by colour. (pls refer to attached pic as a graphical reference) The labels need to have a ...
0
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1answer
64 views

High resolution and reasonable cost RGB satellite images [closed]

I need to obtain high-resolution RGB satellite images with reasonable cost for Pakistan. The objective is to guide tourist on high-resolution GIS maps. Google Earth does not have very high resolution ...
2
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0answers
38 views

Selecting annotation by color to correct Annotation Class using ArcPy?

I have some municipal data that was converted into a GIS and all of the address numbers were coded as dimensions in the annotation feature class. There is an annotation class for address, but none of ...
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0answers
55 views

Seeking comprehensive information on how to create beautiful and artistic cartography? [closed]

In many circumstances I experienced how powerful maps can be because a key decision maker just enjoys looking at a beautiful representation of facts instead of reading 10 pages of text. I have a ...

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