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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29 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 ...
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1answer
45 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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21 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 ...
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1answer
63 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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13 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
30 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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23 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
21 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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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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27 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
26 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
34 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
32 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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71 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
99 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
34 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
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 ...
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130 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
246 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
70 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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1answer
195 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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45 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
54 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
321 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
55 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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32 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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54 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
71 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
47 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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51 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
125 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
233 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
49 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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123 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
246 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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1answer
143 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
229 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
115 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
270 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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28 views

RGB image file to Y'CbCr and other Luma+Chroma Representations

is it possible using QGIS on windows to convert an RGB image file to Y'CbCr and other Luma+Chroma Representations format. I've seen various formulas for this written in MATLAB and R. I am looking to ...
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1answer
58 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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0answers
101 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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35 views

Creating and importing .txt custom singleband pseudocolor scale into QGIS?

I have a .txt file with 3 colums : One with the pixel value, One with the corresponding color expressed like this : #960000 and One with the name/legend corresponding to the color Here is how the ...
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2answers
95 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
278 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
371 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
97 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
258 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
174 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
42 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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