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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247 views

hypsometric colors alà IMHOF, SYDOW or PEUCKNER

I need a hypsometric color-map to add it to my multishade-modell. (High Mountain between 800 and 4000m) There are a lot of differend typs explained in IMHOFS "Cartographic Relief Presentation". I want ...
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1answer
39 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 ...
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1answer
118 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 ?
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41 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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429 views

How to change color of a layer in openlayers?

http://www.cv.nctu.edu.tw/shapefile-js-openlayers/ol_simple.html this is my website for test. I add two layers in openlayers. And I want to change color in one of two layers. var myStyle = new ...
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2answers
379 views

Retrieve Elevation from Color in Raster DEM

This might turn out to be a newbie question, and that would be because I'm fairly new to GIS work, but extensive online searching, asking associates with some basic GIS knowledge and hours in various ...
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2answers
251 views

What output colour format is expected by the QGIS data defined properties widget?

I'm trying to write a python function that takes a BGSREF attribute from a BGS geology shapefile and uses it to colour up the geology polygons of a shapefile. I posted my non-code working as a part ...
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2answers
59 views

Linking data to road colour scheme

I'm getting started with a qgis map showing the quality of roads in my town. I have various data which create an index of 1-5. How do I link this index data to road data in a map, showing the bad ...
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1answer
627 views

How to get custom color palette in rasterVis plot3D in R?

I am trying to insert an RColorBrewer palette to visualize an elevation raster in R using the rasterVis function plot3D. The rasterVis reference document shows the following parameters: plot3D(x, ...
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1answer
74 views

How to symbolize a large amount of points with lots of color

I have an interactive map with a very large amount of different points. Depending on user selection, various points are shown or not-shown. These points are divided into several categories, each ...
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1answer
228 views

Automatic four-colour (political boundary) rendering with PostGIS

This is probably a long shot, but is there a way to automatically select colours for neighbouring regions using the four colour theorem, in PostGIS? The data I'm using is suburb boundaries in ...
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1answer
224 views

How to convert a multi-band landsat RGB to a kml file using MAPTILER

I was able to use maptiler for converting a single raster (ortofoto geotiff obtained with UAV) into a kml file. Now I want to convert a RGB landsat into kml for visualisation in Google Earth. It is ...
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2answers
188 views

Is it possible to import SAGA colour styles in QGIS?

iam still using QGIS and SAGA independently in my productive use (despite the excellent SEXTANTE toolbox, which is sometimes a little buggy). SAGA has some very nice default styles and i am wondering ...
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2answers
3k views

How to modifiy how selection highlights are displayed? [closed]

I have got a layer of points that are showed with a litlle symbol. When I select one, a red square comes around it. The problem is that this points are inside other layers (polygons) and some of them ...
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1answer
906 views

1-band raster colour table workaround in QGIS

Does anyone know what the workarounds are for the 1-band raster colour table plugin in QGIS? Currently I find it will run once, then crash on the second iteration. The workaround I use is to delete ...
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1answer
97 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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1answer
93 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
450 views

legend colour with specific value

i have model plotted in R base<- raster("example.tif") plot(base) image i'd like to change value (0,5,10,15,20,25) breakpoints<-c("0,5,10,15,20,25") plot(base,break=breakpoints) Error in ....
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692 views

List of Offensive Symbols/ Colours for Cartography

I was at a data visualization workshop a few days ago and someone there asked if there are any symbols/colours that might offend people when making charts, the presenter didn't really understand the ...
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1answer
124 views

GEOTIFF Binary File with Color Display Issues

I have a GEOTIFF in QGIS that shows values of 0 and 1 and I want the 0 values to have no fill so that background vector layers can show through and so I can easily overlay things in a print composer ...
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1answer
430 views

SetColorInterpretation() for a GeoTiff using GDAL not working

I have a single band image which I would like to copy to a 3 bands of a new image and set the ColorInterpretation to red, green and blue respectively. I have tried two approaches, one using the GTiff ...
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1answer
212 views

How to improve the color matching between a scanned image of a map and the original?

When I scan a section of paper map using a Canon Lide 200 A4 scanner, the resulting image has colours which are not true to the original. The most annoying is where the predominantly white paper ...
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1answer
895 views

Where does the Style Manager store the files in and Why does the Style Manager does not show some edit color ramps?

Where are Color Ramp files saved? Every time I make edits, it does not show up on the Style Manager. Does it save it to the hard drive or in the Style Manager? I need more information. Thanks
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2answers
271 views

Put color for raster data(aspect.tif) on QGIS1.8.0

I create aspect.tif from DEM file. I could put the values(0 to 360)from contrast enhancement. I could set color from color map(freakout or Pseudocolor). In here, the data is shown by only 4 colors. I ...
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1answer
537 views

How to set a color for a rectangle?

I had drawn a rectangle by adding element to graphics container like the code below: IGraphicsContainer gc = mxDoc.FocusMap as IGraphicsContainer; gc.Reset(); IRectangleElement rectangleElement = new ...
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1answer
169 views

Different colours for touching lines on MapInfo?

I am creating maps for surveyors showing different sections of roads. The start and end points need to be clearly visible so I am using a Region IndValue thematic map. However, sometimes when an ...
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1answer
799 views

How to color markers based on polygon area?

I have a map with around 317 markers and each marker is the center point of a polygon. The polygonal area varies throughout, so I want to represent the markers in such a way that the polygon with the ...
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1answer
282 views

Creating color table file in PCI Geomatica

What is the simplest way to create a stand-alone color-table file in PCI Geomatica (PCT or STR)? I have some classified imagery with values ranging between 0-255 and I would like a way to ...
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0answers
13 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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24 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 ...
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0answers
19 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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1answer
52 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 generate a new file /static/gn_search_default.css. How can I ...
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14 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 ...
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50 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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46 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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2answers
67 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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0answers
65 views

Convert manual colored maps to vector

Is there a way to colorimetrically and automatically vectorize georeferenced rasters that came from manually colored, scanned maps? Currently we Print the topography maps 20k scale --> hand-coloring ...
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0answers
227 views

Convert grey,green,blue to red,green,blue tiff

==== Edit ===== Issue tracked to strange behaviour of gdal_warp when -dstalpha is specified and source is RGBA. I had assumed that the grey,green,blue tiffs (see example below) were genuine and ...
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1answer
209 views

How to change the color of a specific feature(s) with a PyQGIS script

First of all im a big noob so don't hate. So image that the lines that i have drawn is simple pipeline network, represented by some simple lines in a vector layer. Now the question is, how can i ...
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0answers
51 views

What can POLYCOLOR mean and is there a way to convert to RGB?

It is not for the first time I found in the tables of some data column called POLYCOLOR. Is there any way to figure out what that means and is it somehow convertible to RGB values? If I get it right ...
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2answers
80 views

Import file format with colors

I am very new to QGIS, so please excuse me if my question seems stupid to you. I have a small question regarding setting manually colors for points and lines. I have a bunch of nodes and vertices to ...
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72 views

Inverting color ramp in legend

I have inverted the color ramp to display land surface elevation, now when I add a legend in print composer it shows the lowest value at the top and the highest at the bottom. See below: It is more ...
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1answer
163 views

Coloring polygon based on date using TileMill/CartoDB?

How would you color a polygon/line/dot based on a date? The colors would be a pre-set list. I need the area to update its color based on the current (or given) date. I would be using tilemill or ...
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181 views

How to change color of points dynamically from a geoJson in openlayers

I am new in Openlayers and what I am trying to do is to dynamical give a color to some points read by a GeoJSON file. I am taking inspiration by this post How can I add an infowindow to an ...
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101 views

Postgis Raster Unions Color Issues

Can someone explain to me what I am doing wrong here as I think I do not properly understand postgis raster bands. I have a set of geometries that I want to merge with a raster and created a raster ...
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57 views

Vector Layer Symbol (ism) properties?

I would like to streamline the render of a polygon grid vector layer as a simple line (no fill) via Python coding. I am I bit confused by the implementation referenced by the API. Is it possible to ...
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382 views

Color different in Maps exported from ArcMap to PDF and other formats?

When exporting the same map in ArcMap into different formats the color is not consistent. The map is a roadway network and I use grey 30% solid line as the symbol in ArcMap. However, when i export ...
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116 views

Color blending/compositing in web mapping frameworks?

The color/layer blending capabilities of QGIS 2 produce marvelous results. Blended rasters are especially nice to look at. Blending is, to me at least, a better way of combining layers than mucking ...
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32 views

Styling a raster on relief shading analysis [duplicate]

Possible Duplicate: How to create a style file for QGIS from a plain text file? I have a text file which contains the following data eleva R G B 0 153 255 153 100 179 255 179 ...
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64 views

Importing World Map image, color issues?

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 ...