Questions tagged [colormap]
represents a transformation that maps pixel intensity values to colors.
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The map color display in GEE and QGIS is different
I'm new to in Google Earth Engine and QGIS. Lately I try to export map from Google Earth Engine and then i opened the map in qgis. Sadly, the map color in Google Earth Engine is not the same in QGIS. ...
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ArcPy AddColormap method adds too many symbology values
I'm having an issue with trying to use a Colormap on my map that symbolizes plant hardiness zones. When I try to use arcpy.management.AddColormap to use a somewhat custom Colormap that I created and ...
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673
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Discrete colours in Geopandas map
I am making a map in Geopandas, whereby I want to discretely color the different vegetation protection classes - "VMA_CAT". The vegetation protection classes are:
B - E-dom, B - O-dom, B - ...
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Problem with color scaling for rasters [closed]
I just opened QGIS to be able to make plots and now I notice that I can no longer do color scaling as before.
The problem is shown in the following screenshot.
I uninstalled and installed QGIS several ...
5
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318
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QGIS singleband pseudocolor color interpolation
In QGIS when defined a singleband pseudocolor symbology, the interpolation between 2 steps acts in a way I can't seem to understand.
Take for example step 1 and step 2:
Value 0,0000002 is defined ...
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Updating sldstyle based on user choice
I use sldstyle to create a discrete colormap for plotting images in Google Earth Engine. Like this:
var assimvalue = 1; // desired upper limit.
//set up the 11 intervals
var assimstep1=-(assimvalue/5*...
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3
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1
answer
156
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Looking for QGIS equivalent of ArcGIS "Delete Colormap" tool
I have many TIF rasters with colormaps. In ArcGIS I can delete these with "Delete Colormap" tool.
Is there a QGIS equivalent of this tool, or some other way of deleting them?
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Specifying color in ArcGIS Pro from the external text file for Attribute Table function
I am working with 16-bit signed raster image mosaic dataset in ArcGIS Pro 2.9.0. I use Attribute Table function to specify classes' names using external table:
While this function works and gives me ...
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Visualising a Raster (KAP open sea map file) using python with rasterio how do I get the colours correct
I have just started using rasterio to show raster maps in Python. I want to display some OpenSeaMap (KAP raster format). I have started with a single kap file, I can load and display a single kap file....
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Color map from random raster in QGIS
I am trying to create a color map overlay of sound levels from a known source using QGIS (3.8). The results of the noise calculations come out as a raster in polar coordinates (NOT rectangular), ...
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Converting 3-band raster of a topo map into Unique Values with Colormap or by Reclassifying using ArcMap
I'm using a 1998 USGS topo map for a geologic map base in ArcMap 10.5.1. Right now, the topo raster is in 3-bands with an unsigned 8-bit pixel type. Strictly for cartographic reasons, I need to strip ...
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Creating Raster Colorizer with ArcPy for ArcGIS Pro
I'm having trouble trying to write the Colorizer code for an NDVI Raster in ArcGIS Pro.
The raster is single band, and if I set the discrete colorizer through the Symbology window, I then can access ...
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Are raster color band codes standardized in ArcMap/ArcGIS?
I have multiple TIFF files which contain rainfall data. Different colours are associated with different levels of rainfall.
When I add the files to arcgis, a colour/colour code is created.
These two ...
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Do GeoTIFFs support color tables?
I checked the official GeoTIFF documentations and there is no reference to color maps. Regardless, I see color maps or tables referenced everywhere, including in other questions.
I am aware that a ...
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Custom Colormap (cmap) rasterio, Python
I wish to display custom colours for the pixel values in my raster. How can I create a custom colormap (cmap)?
In the example below, I have specified "magma" as the colour map. However, I ...
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Cannot count the cell amount
How can I count the colorwise cell amount of a layer file? The attribute table is hidden in the menu.
Is there any tool to do that?
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'Add Colormap' tool returns nothing in ArcGIS Pro 2.2
In QGIS 3, I created a text file for my symbology.
Here it is:
symbology.txt
# Fichier d'exportation de palette de couleurs généré par QGIS
INTERPOLATION:INTERPOLATED
0,0,204,170,255,0
8,0,204,170,...
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2
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338
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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 "...
1
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1
answer
495
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GDAL Creating color ramp gives "ERROR 1: TIFFSetField:Images/out.tif: Cannot modify tag "PhotometricInterpretation" while writing"
I am receiving a weird error when creating my color ramp using GDAL color options. Here is a working version of my code
import numpy as np
import os
from osgeo import osr, gdal
#Load in and format ...
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1
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python-gdal write a GeoTIFF in colour from a data array
I have a 14400 x 7200 (360 x 180 at .025 deg resolution) numpy array containing data which I want to make into a GeoTIFF. I have done the following which creates a GeoTIFF fine:
# Set file vars
...
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34
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Phenology divergence color map per pixel
My aim is to create a map displaying the start of spring for vegetation which is a set average value, I want for each pixel to know on which date it is actually trespassing this value. So lets say ...
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Retrieving individual pixel height data given color table/relief data and color shaded relief map using C# and GDAL?
I am using C# GDAL/OGR/OSR bindings. I have a GeoTIFF file where each pixel is stored as a color in a Red, Green, and Blue raster band. I have a color table/color relief file (.csv) which I am able to ...
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346
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Use color map from .tif.aux.xml from ArcGIS in QGIS
I have a raster file (.tif) of different ecosystem types (from natureserve). Each value corresponds to a different type. I'm trying to get a table of those attributes and colors. The file includes (...
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252
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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 ...
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385
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Creating color relief from GeoTIFF using gdaldem returns font name
I'm trying to generate a color relief map from a SNODAS greyscale geotiff file scaled from 16-bit to 8-bit. Given the type of data and the scaling, it seems the pixel values are set at 1-5, with 5 ...
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GeoServer: colormap for point data
How could I create a continuous colormap for point data in GeoServer?
I am planning to serve satellite measurements (METOP IASI) as point data in GeoServer 2.15 and want the point colors to represent ...
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2k
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Changing color scale in KML files?
I want to work with kml/kmz files in the Google Maps API, but I want to remap the color scales.
Is that possible?
Here are example kml/kmz files where I'd like to change the color representation ...
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528
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How to include colors in 16bits one band raster
I have many 16bits one band rasters (geotiff), who basically are in greyscale.
I had created a style for a color representation with "Singleband pseudocolor" in QGIS and save a qml file.
But for my ...
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Creating Mosaic Dataset in ArcMap with Colormap as renderer or adding Colormap after creation?
I have several rasters in tiff format that have a colormap assigned to them:
I then create a Mosaic Dataset with specs matching the imagery and add all of my tiffs to it (you can ignore the warnings ...
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101
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Set colors in colormap to specific index values
I have multiple pictures with 8 bit indexed colors (0-255). In the end I want some of the colors at specific index values. Black has to be value 0 and white 255. Is there a possibility in ArcGIS to ...
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How to let rasterio use a colormap file when showing a TIFF
I'm new to rasterio. I have tried this example. My raster file is a GeoTIFF file and I have a colormap file available in ESRI *.clr format, with 58 lines. The values in the GeoTIFF file range from ...
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Converting ArcGIS raster colormap file (*.clr) to QGIS style file (*.qml)
I have an ArcGIS colormap (*.clr) and I want to open it in QGIS to apply a predefined style.
The *.clr file is really simple, only has four columns representing [value] [red] [green] [blue], as this ...
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Correctly display the colors in MATLAB colormap and colorbar?
I am plotting spatial maps with fill values ranging from 0.05 to -0.05
Below is the part of code for plotting colormap and colorbar
colormap(brewermap([10],'RdYlBu'));
caxis([-0.05 0....
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Extracting RGB values from symbology of .lyr or polygon file using ArcGIS Desktop?
I have a polygon shapefile of geological units. Someone has already created a symbology and assigned standard colours to the units, available as a .lyr file.
What I need to do is create a list of the ...
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Circular color map in QGIS
In order to plot azimuth values for example, does anyone know any good circular color map?
By good I mean, visually suited for human color perception.
I didn't find any suited color ramp preset in ...
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405
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ArcGIS colormap is not active?
i have a problem in ArcGIS with colormap. It is not active. I follow the steps written here http://desktop.arcgis.com/en/arcmap/10.3/manage-data/raster-and-images/creating-a-color-map-clr-file.htm, ...
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Custom matplotlib discrete colormap with fixed values on raster
I've been using a color ramp with fixed values (0-255) corresponding to specific rgb color (discrete interpolation) for 8bit tifs in QGIS. I've used matplotlib to apply built in colormaps, but I'm ...
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2
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405
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Colour gradation in ArcMap - shades of blue
I have created a map of the United States with concentric circles around a geographic point, namely Detroit. I was able to give the different circles around the city colours of different grey shading. ...
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QGIS 2.x - 4 colors theorem - TopoColour and Map Coloring plugins [duplicate]
I try to use TopoColour or Map Coloring plugins to color my polygon layer:
Both of them doesn't work or I do something wrong. Maybe somebody knows any other plugins which color shapes according to 4 ...
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Choosing color classes for comparing differently distributed spatial data
For comparison, I want to draw two maps alongside each other. Both maps should use the same color classes/scale. The problem is that the data for the maps is very different: The data for the first map ...
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Specifying values in stretched raster histograms of ArcMap?
I am trying to use the stretched color option with a topography raster. I have a color bar that I painstakingly make in arc and I am basically trying to set values of the topography equal to certain ...
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1
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2k
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Style points using color gradients with QGIS
I need to style a shapefile with a specific color gradient, but considering absolute values.
It's point shapefile with values between 0.19 and 0.70 (considering they're in an absolute scale between -1 ...
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Why does my raster layer disappear when changing colors?
When I change the colors of a raster layer (EVI), the layer disappears. Here are my color settings:
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ArcPy - Force layers to inherit their ColorMap when visualized
I have a large set of GeoTiff's which after manipulating I apply a colormap to the ones I want to visualize with:
arcpy.AddColormap_management(raster, "", color_map)
I then add them to my ...
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1
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logarithmic color scale
I am using QGIS Essen on Windows 10. I have a data set (.txt file) that contains latitude, longitude, and black carbon (BC) values. I can style the layer using the values of BC - graduated style, ...
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color point shapefile based on cell values
I am using QGIS.
After exporting a point shapefile from a raster file, I like to know how can I color the point shapefile with a cell values.
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187
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Color .xyz files with QGIS
I like to know how can I color a xyz file based on the Z values(elevation) with QGIS, by python or graphicly
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Why do Landsat 8 grayscales have a range of (0, 2^16-1) while the screen colors are (0, 2^8-1)?
The grayscale levels in Landsat(0-65535) are more than that can be displayed on a standard display screen(0-255). The use of Landsat reflectance values must be more than just display purposes, which ...
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Python: color Canadian provinces in a shapefile based on given values
The goal here is to create a choropleth map of Canada in Python. Suppose I have a dictionary with values referring to each Canadian province/territory:
values={'Alberta': 1.0,
'British Columbia': 2....
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225
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gdaldem exact color matching fails
I'm using gdaldem color-relief to read a Uint32 raster and write an RGB tif. The input color_text_file has one line:
102216130 23:105:102
My input file is a single (large) pixel of value ...
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