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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606 views

Setting color from color value in attribute table in QGIS? [duplicate]

I have a shapefile with colors (hex code) in the attribute table for each polygon. How can I set color of each polygon according to the color value in the attribute table?
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2answers
401 views

How to preserve the color of a line pattern fill color in categorized vector layer?

I am applying different colors to a vector layer. Now I wanted to improve it, and get some items also with a crossed pattern. I want to have the hatching black, and the colors remaining. All I can get,...
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2answers
376 views

How to cut (grey value) out of range colors on a raster image color ramp?

I am working on a raster file on which I applied a color ramp ("bcyr") in continuous mode and linear color interpolation to have a smooth effect. This works nicely. But if a reduce the [min max] ...
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0answers
298 views

Changing colors in SVG file polygon using QGIS?

I try to change colors and lines width in this polygon (this is SVG file): I learn from here SVG symbol colors differences in QGIS 2.12? Using SVG file to fill polygon using QGIS- problem to add this ...
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0answers
101 views

Style rule based on feature adjacency?

Is there a way in QGIS to use an expression to define a polygon feature's color based on whether it's adjacent to other features? I would like to achieve something like the following: -If a feature ...
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1answer
176 views

Display selected features with same point geometry

I have a point layer and some features have exactly the same geometry. When I make a selection it seems that some features are not selected because they do not display with the "Selection color" as ...
4
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1answer
3k views

Assigning different colors to different parts of text in labels using QGIS?

I'm using QGIS 2.14.3. It is now possible to assign different colors (or fonts) to different parts of text in one label (I have seen How to make a different font and color of text in labels? )? If so,...
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0answers
59 views

QGIS how obtain multicolour lines from polygon cell grid multicolour

In QGIS I have different lines with same colour that pass through a grid polygon cell (each cell of the grid have a colour). When a line cross a cell, it must colour with the relative cell colour. ...
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5answers
2k views

Color ramp resources other than Color Brewer?

I am looking for more resources on color theory in cartography. When to de-saturate a color? Or if you start with one color, how do you create a ramp from it? RGB or HSV? I can hack at it and come up ...
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2answers
178 views

Creating a palette for categorized data displays

I regularly categorize data as follows: Prehistoric = blue Roman = red Anglo-saxon = green Medieval = yellow Post-medieval = brown Modern = grey Undated = white Is there any way to save this palette ...
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1answer
2k views

QGIS: How to modify the appearence of selected attributes [duplicate]

I am using QGIS version 2.14.1 (Essen). When I open the attributes table of a layer, I select some data which is then highlighted in yellow on the map. I was wondering if it is possible to change the ...
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1answer
324 views

How to colour a SpatialLinesDataFrame with Rainbow [closed]

how to color a SpatialLinesDataFrame according to some given value (Rainbow) FRA=readShapePoly("FRA_adm0.shp") grid <- raster(extent(FRA)) # Choose its resolution. I will use 2 degrees of latitude ...
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0answers
187 views

Changing colours in SVG symbol using QGIS?

I am using QGIS version 2.14.1 (Essen), and I have imported a traffic cone symbol in SVG format to represent some of my data. I was wondering if it was possible to change the color of this symbol ...
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1answer
490 views

GeoNetwork style customization

When I launch GeoNetwork, all changes in files of style (geonetwork.css, gn_search_less, gn_view.less,...) are lost, and the system generates a new file /static/gn_search_default.css. How can I ...
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0answers
44 views

Export color corrected rasters from a catalog in arcmap

I have several raster in a raster catalog for which I(ve used color correction. I'de like to export each raster as a geotiff with exactly the same resolution and world file than the original geotiff ...
3
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1answer
90 views

Polygon made by colour difference

I need to analyze differences (historical) in coverage of some species (seagrass Posidonia). Although its a marine species, subject area is very shallow and even from common satellite and aerial ...
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3answers
15k views

Color Ramp in QGIS

This is a real basic question, but I can't seem to find it. How do I add a color ramp in QGIS? I noticed that has different applications you can add to QGIS (like RdYlGn, GnYlRd, cpt-city, etc...) but ...
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0answers
111 views

How to make water transparent on openstreemap-carto style?

I have build up manually a tile server on Ubuntu 14.04. LTS, by following switch2osm's guide and have used the openstreetmap-carto style. Now I intend to add a base layer, underneath the current one,...
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1answer
605 views

ArcPy - Symbology Color Changes After Setting Class Break Values

I develop a python script tool to adapt the symbology of a set of shapefiles based on a given symbology template (layer file). These are the properties that should be changed: Number of classes and ...
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1answer
92 views

How to control polygon colour in hand-crafted Json for ArcGIS Desktop 10.3/10.4?

An app I'm developing needs to handcraft ESRI JSON to display simple polygons in ArcMap Desktop upon import. I want to specify color/transparency/outlining for the polygons in a layer and ideally ...
3
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2answers
863 views

How to find a object in by name in the properties? [duplicate]

I would like to change the color of one object in the shapefile. I have done it with every object of interest and it worked so far. But this one I can’t find by name in the properties. Is it possible ...
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0answers
40 views

Create polygon symbology from attribute? [duplicate]

I have shapefile with polygons and lines. There are attributes for: layer, lineweight, colour: Red, colour: Green, colour: Blue. (colour values are from 0-255). Is there a way to read values from ...
2
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1answer
441 views

Color gradients to show direction in polylines

I am referring to this very useful hack to change the color gradient of buffered polygons in order to show direction (with a gradient from red to green, for example) hack The only problem is that ...
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0answers
263 views

QGIS Color text labels the same color as the feature [duplicate]

Using QGIS 2.12.1 on Ubuntu 14.04 Desktop. What I have is a layer where each feature is a different color. I also want to label each feature but I want the label colors to match the feature colors. I ...
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1answer
464 views

NDVI colour scheme for ArcGIS

Does anyone have a download link for the NDVI colour scheme to use in ArcGIS for Desktop? I am looking for MODIS mod13 data and cannot find an appropriate colour scheme in the programme.
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1answer
234 views

Displaying colored traces and waypoints

Goal: display map with few routes, which have colored segments. Also displays few waypoints with text + gives option to download few gpx routes and additional text. I see that gpx format has ...
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2answers
8k views

Change the ArcMap background from white to blue (i.e the sea)

Say I have an image like the map below, how can I change the white to blue, to represent that this is the ocean? It is not part of the shapefile itself, so I cannot use symbology.
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3answers
1k views

Printing subset of ArcMap layers in black and white?

I am working in ArcMap Is it possible to print a select few layers in black and white and have one or two layers print in color?
2
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0answers
161 views

Random color ramp issue

I have one set of polygons and one set of points sharing a common attribute (value 0-503). When applying style with new random color ramp (Categorized) the first set of polygons is displayed ...
4
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2answers
956 views

Manually selecting colors for different polygons within layer in ArcMap?

There is a polygon layer with several polygons. They are displayed with some colour which can be changed simultaneously for all of them. Is there a way to manually select several polygons (without ...
5
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1answer
98 views

Trouble saving graduated color style in Spatialite db in QGIS

When I attempt to save a style with graduated colors for a vector layer in a Spatialite db, I receive the following error: Error looking for style. The query was logged I had success saving single ...
2
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1answer
315 views

How to transfer saved colors from computer to computer?

I have a ton of colors saved on the color palette and I was wondering how to transfer this color palette from a machine using QGIS 1.10 to a machine using QGIS 1.12.
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2answers
158 views

Regarding Landsat 8 QA image color

As par the USGS page explaining the 8 bit quality image in following link: http://landsat.usgs.gov/LandsatLookImages.php Water is represented by bit 3 [Translated to color range (8 -15)] and Snow/ ...
4
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1answer
416 views

Create a Geotiff with different colors

I have a geotiff raster image. I have estracted the WritableRaster, the envelope, and the gridsampleDimension I need to create a new geotiff using Geotools. GridCoverageFactory gcf = new ...
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1answer
375 views

Importing World Map image changes color in ArcMap?

I am having a hard time finding a world relief map with "lighter" ocean colors that will actually display as such in Arc. This is the image I download from the web but this is how it displays in ...
2
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1answer
677 views

arcpy: read color value of shapefile loaded in ArcGIS Desktop

I've got various polyline shapefiles loaded in ArcGIS, each using the default line style with different colors. For a python addin I'm working on I would like to use arcpy to read the RGB value of ...
13
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3answers
3k views

How to set transparency per polygon in a shapefile in QGIS?

How to set transparency per polygon in a shapefile in QGIS? For example: a polygon with field "value" = 1 should be fully transparent whereas field with field "value" = 0.4 should have a 40% ...
0
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1answer
391 views

MapServer label background colour

I'm a totally newbie in MapServer. I'm using MapServer 6.0.3. I have managed to label some lines but I cannot create a background colour for the labels. Using QGIS 2.10 I got something near to what ...
2
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2answers
54 views

Colouring three individual attributes in point layer using QGIS?

I am new to QGIS and am learning the expressions function. I would like to know how to independently colour three separate attributes on a point layer as below:
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0answers
253 views

Applying unified color scale to tiles with gdal2tiles?

Background: I have a series of about 40 small GeoTIFFs that need to be merged together to make one large image. Each GeoTIFF has 2000 bands. I've tried using both gdal_merge and gdal_retile to pull ...
5
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1answer
3k views

Using BOTH size and colour to represent 2 pieces of information on single point in QGIS

I want the colour of the point to represent value from data column x (eg. rating from 1-5) and SIMULTANEOUSLY the size of the point to represent value from data column y (eg. Number of ratings 0-600). ...
0
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1answer
844 views

How do I color XY coordinates with different colors in ArcGIS for Desktop?

I have added XY coordinates on map layers in ArcMap. These coordinates now show up as points. However, I want to be able to color each coordinate point a different color. Any tips/explanation?
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1answer
4k views

What is the color standard for roads or Transportation for USA?

Are there color standards for US Transportation roads such as Interstate, County,, Interstate, local, private, state highway and other roads out there ?
4
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1answer
757 views

How to change a Esri Scale Bar's font color

I'm working on my first ESRI web map project. In the Default.Aspx page the scale bar is initiated as shown below : dojo.require("esri.dijit.Scalebar"); map.on('load', function () { //resize ...
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2answers
339 views

Changing Layer Color

I have a map with many feature classes on it. I want to use arcobjects to get to a selected layer (aka one of the feature classes) on the map, and change the fill color of all the polygons within that ...
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2answers
717 views

Mapping continuous vector data on a continuous colour gradient in ArcMAP 10

I'm plotting vector data for different attributes for countries across Europe. I've used symbology to plot categories of countries. However, the data are numbers so are on a continuous scale. I would ...
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1answer
672 views

pyQGIS changing Paletted Raster Layers to Grayscale

I've written a plugin which imports a number of colour geoTifs (map tiles) and works correctly but it would be great to display these as Grayscale after loading in. The geoTifs load as paletted ...
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3answers
114 views

Editing Road Style/Color from ArcGIS Maps and Data Group

I have ArcMap 10.2 on a Windows 10 pc. I uploaded this open source layer into my desktop map, but I can't edit the look of the streets or color from the table of contents. Is there a way to do this, ...
4
votes
1answer
1k views

Importing TIF raster in QGIS, default color band

Where can I change the default color bands for importing raster images? When I import a TIF image the green color band is not set causing a purplish image. When I set it in the properties it views ...
1
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1answer
167 views

symbology with 2 fields - one for the color and another for the shape?

for example, i have two fields: 1 - a, b, c 2 - X, Y, Z and i want to do like this: a - square, b - circle, c - point X - blue, Y - red, Z - pink and when i have a and Y - it whould be red square.

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