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
364
questions
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22 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
vote
1answer
27 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 ...
2
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0answers
45 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
195 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
votes
1answer
29 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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15 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
219 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
49 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
58 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
29 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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15 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
134 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
28 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
42 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
94 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
28 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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124 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
69 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
votes
2answers
204 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 ...
0
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0answers
36 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 ...
2
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0answers
10 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 ...
3
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2answers
187 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
54 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
votes
1answer
35 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
55 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
40 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 ...
1
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0answers
42 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
86 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 ...
0
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0answers
11 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 "...
3
votes
2answers
104 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 ...
2
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0answers
52 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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0answers
65 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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0answers
20 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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0answers
68 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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0answers
25 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?
0
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1answer
14 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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0answers
25 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
71 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 "...
0
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0answers
31 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
votes
1answer
92 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 ...
3
votes
1answer
28 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
votes
1answer
234 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 ...
1
vote
1answer
220 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
63 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 ...
0
votes
1answer
26 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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votes
0answers
30 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.
1
vote
1answer
33 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 ...
0
votes
2answers
42 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
votes
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?
