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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77 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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27 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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35 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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1answer
34 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
45 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 ...
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1answer
35 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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170 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
280 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 ...
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1answer
71 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.
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1answer
37 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 ...
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1answer
660 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 ...
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1answer
1k 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
134 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 ...
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2answers
679 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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74 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 (...
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1answer
65 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).
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6answers
1k 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 ...
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1answer
71 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 ...
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0answers
50 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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58 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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1answer
84 views

How to create a saved, consistently available value/color key when styling a choropleth map in QGIS? [closed]

I've created a simple choropleth map representing birthplace data for the US, by PUMAs, for a particular shapefile (e.g., the layer shapefile_1): I've categorized the value for each of the PUMAs ...
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0answers
67 views

Convert bitmap image to adjacency [closed]

I have a map in a bitmap image format (.bmp) where each region is assigned an RGB colour. What I want is a list of every adjacent region, for every region. So if region1 is adjacent to region2 and ...
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0answers
122 views

Unifying color scale of different tiles in Google Earth Engine?

I found some other posts asked the similar questions but in different tools like ArcGIS, GDAL, QGIS etc. What I want to ask is how to do this in GEE. Now I have removed the bad observation pixels (...
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1answer
254 views

How to crop raster in R without losing the colors?

I have a 2x3 raster in R, with values 1 to 6. library(raster) r <- raster(nrows=3,ncols=2,xmn=0,xmx=2,ymn=0,ymx=3,vals=1:6) colors <- c('red','orange','yellow','green','blue','purple') plot(r,...
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1answer
864 views

GeoServer polygon transparency (SLD style file)

I am trying to add transparency to a set of polygons (city bounds) within a .sld style file for OSM. Please see below: As you can see the city bounds are overlapping Montana State University. My ...
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1answer
111 views

Using multiple colors for labelling that depend on values in QGIS?

I would like to do labelling like this (3 rows): Location_name Time People My csv has 5 features Location_name Time AM/PM People A/K Based on the value of "AM/PM", I want the ...
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227 views

Changing color of GeoTIFF using GDAL and Mapbox?

I have a geotiff that I am importing to a mapping software that I want in the color pink. It is currently a white image, and I would like a GDAL option to change the color. I am using Mapbox, which ...
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1answer
814 views

QGIS color map format

What is the correct color map format (.txt) for a color map I want to load in the Raster Layer Properties/Symbology menu of QGIS (v. 3.6.0)
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2answers
322 views

Forcing color ramps to center around zero in QGIS

I have several columns of data that have percentage values. Some are positive and some are negative. In one particular column, the values range from -0.70 to +0.20. The mean value of the column is ...
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2answers
424 views

Adjacent DEM color matching in QGIS?

I have four 15 arc second resolutions DEM files (15-C.tif, 15-D.tif, 15-I.tif, 15-J.tif) downloaded from viewfinderpanoramas.org. When I input them in QGIS I noticed that the 15-J.tif layer differs a ...
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2answers
229 views

Commandline tool to change RGB value of GeoTIFF

I would like to change the rgb-value of raster-tiffs from 0,0,0 to 1,1,1. Is there a commandline-tool that can change the rgb-values of GeoTIFF files? At the moment I use irfanview to change the ...
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1answer
963 views

Change color of part of the line in QGIS

Imagine a few km long pipeline. Pipeline consists of 4 types of pipe. Those types are alternating. 0 - 200m A type of pipe go. (Green color) 200 - 230m B type of pipe etc..(RED color) 230 - 380m C ...
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1answer
81 views

Remove edge styles on polygons

I have multiple polygons aligned next to each other. They are colorfilled with "Graduated" style. I have changed "Stroke style" to "No Pen". How can I get the hairline between the polygons to ...
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1answer
277 views

Extracting GeoTIFF colours and adding to equal geometry shapefile

I have the following map in .png-format that I would like to replicate, but I cannot obtain the original data. The map shows the current water supply vulnerability for local municipalities in South ...
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2answers
152 views

Giving the same color to different shapefiles in QGIS

I have two shapefile consist of many dots. First shapefile's dot values are between -19.060 and 9.680, second shapefile's dot values are between -13.153 and 11.758. I want to apply the same color ...
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1answer
511 views

Fill color and outline color with the same value [duplicate]

I made a categorized symbology on a shapefile, but the color value of outline (stroke color) is different than the color of fill color option. How can I ensure that both colors are the same for fill ...
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2answers
877 views

Applying color ramp to gradient fill in ArcMap?

I know that you cannot apply color ramps to the outline of a polygon, so essentially what I want to do is add a gradient fill with the inner color of the polygon being "no color", and then apply a ...
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1answer
255 views

Applying one color to many layers in QGIS 3?

I've been playing around with my QGIS Bonn (3.2.3) and I have a question regarding styles/symbology/colours. Is it possible in QGIS to set one colour/style to multiple layers at once?
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1answer
484 views

Multi-band raster color model in QGIS. Why RGB (668, 983, 1007) in Uint16 appears green?

I created an RGB Uint16 composite raster in QGIS . These are band designations: Band 1 - blue Band 2 - green Band 3 - red When i query value of a pixel that appears green - it shows (B3: 668, B2: ...
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1answer
264 views

KML polygon rainbow filled colors is showing only as simple color?

I draw filled color contour in Surfer application I imported this file to Google Earth as .kml file There is no problem so far I tried to import the same file to QGIS 2.18.28 But the colors is not ...
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1answer
44 views

QGIS 3.4.3 Color region bounded by certain lines [closed]

How do I color in the certain regions that are bounded by lines? I'm completely new to QGIS.
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1answer
506 views

How to Save as in 1 GeoTIFF file the hillshade raster and colored raster layer in QGIS 3.4.4?

I have a raster GeoTIFF of western Mediterranean sea and i want to apply the hillshade model with colors as the tutorial explains (Create great looking hillshaded maps in QGIS). After i finished my ...
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2answers
522 views

QGIS - How to differently colorize labels from two separate fields using color expression script?

I have 2 fields, I concatenate them [concat(to_string(field1), ' ', to_string(field2))] to show their labels side-by-side. Is it possible to colorize from "text color expression" (using some scripts) ...
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0answers
58 views

Color-blind preview export

There are many ways to preview a map as it is seen by people with color vision impairment. ColorOracle, preview mode in QGIS, etc. But none of these options allow exporting the modified image, only ...
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1answer
2k views

Change color of polygon (country) in QGIS

I have a txt file added like a layer to QGIS 3.4.2. File number 1. It is an attribute table. I have a shapefile (a map) added to QGIS 3.4.2. This shapefile has all the countries of the world. Both ...
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1answer
501 views

QGIS raster color selection

I'm working with a raster map that looks like this: Do you know any way to select the red/blue spots or ideally put a points on them? I've been browsing web and qgis help for a while now, but I haven'...
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3answers
4k views

Changing colour of imported SVG icon in QGIS 3.4

I have imported my customised icon (which was obtained through the .jpeg image conversion) for point layers using an SVG file. This works well except for the fact that the original colour was ...
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0answers
405 views

How to export shapefile with colours from QGIS

I want to export shapefiles from QGIS. The shapefiles have been colored by category, but when i export them, the exported files does not have colors, but only the lines that divide the categories. I ...
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2answers
545 views

Can QGIS do color transformation from RGB to IHS (Intensity,Hue,Saturation)?

I need to transform RGB map to IHS is that feature available in QGIS?
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1answer
408 views

Filling or splitting polygons proportionally based on variables using QGIS?

I want to divide each country into three separately coloured areas, like this: The proportions of the three coloured areas must based on three columns of attribute data in the country shapefile's ...

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