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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1answer
23 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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1answer
191 views

Arcgis API for Javascript: how to change color of simple point marker using colorpicker

as title states im having a hard time changing the color of my simplemarkersymbol using javascript. I have read that the format of color needs to be [r, g, b, a] which I have a color picker giving me ...
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1answer
70 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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1answer
51 views

Displaying polylines in different color / Color gradient

Though i am using QGIS, yet I am not confined by tool (can use an entirely different tool or a plugin for QGIS) usage.. Only aim is to get the following: I am reading various shapefiles in QGIS and I ...
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1answer
334 views

Polygon color on intersect

Using OpenLayers, I am loading a large geojason file of about 4000 polygons. Once the polygons are loaded I want to draw a "LineString" on the map (already done and working). My challenge is that I ...
2
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0answers
208 views

Can I export the RGB values from an ArcGIS layer symbology?

I've got a point layer in ArcGIS that has 100 specific color codes based on the name of the store. I'm trying to export the RGB values for these colors (along with the name value it's tied to) so I ...
2
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0answers
112 views

PyQGIS: How to color raster layer with existing colorBrewerMap

With pyqgis I have added multiple new raster layers to the legendinterface(). Because i like the ColorBrewer style i want to color some of them with the "Spectral" gradient. How can I do this in ...
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0answers
16 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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0answers
52 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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0answers
75 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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0answers
40 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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0answers
23 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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0answers
166 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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0answers
101 views

How to optimize color ramp for terrain

I'm working on a project to highlight LiDAR terrain on the web and part of the idea is to show the detail of the data at large scales. I've already read through the excellent Mapbox guide and I've got ...
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0answers
88 views

How can I set fill colors using hex value in arcgis.com webmap?

Has anybody been able to use hex values (e.g. #FF0000) for setting polygon fill symbols in an arcgis.com 'webmap'? I see predefined colors to select from, but no hex input box. Thanks in advance for ...
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0answers
61 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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0answers
177 views

How to Export/Print/Save CMYK colored map to SVG, PDF, or PRN/EPS file

I am a beginner using QGIS 2.0.1 on Windows. Following Data-defined Styles in QGIS I fill CMYK values on my map layers, but I cannot Export/Print/Save CMYK to SVG, PDF, or PRN/EPS file. I see only ...
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0answers
97 views

QGIS raster symbology problem in 2.6

With the new 2.6 QGIS version I often have problems with raster colors. For some reason certain pixels do not display initially, but if I move the raster a little spatially they show up.
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0answers
82 views

GeoServer SLD: fill a polygon with color sampled from gradient

I have a "geometry" and a "rating" column. I want to symbolize the geometries in an SLD (PolygonSymbolizer) but fill it with a color value that is interpolated between BLUE-PURPLE-RED based on the ...
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0answers
63 views

Problem – QGIS 2.2 - Values under Color Rendering saved in style not applied when applying the loaded style?

I have saved two variants of the same color-scheme by putting in different values under “color rendering” in the lower part of the screen. It’s a singleband pseudocolor scheme. Now when I load each ...
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0answers
64 views

How to get the color of a vector layer in pyQGIS?

I have see this topic (How to change the color of a vector layer in pyQGIS?) but I'm looking for get the color not to change. How I can resolve my problem ? Thanks
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0answers
47 views

Tool to save own color table with CMYK, GRB and HSL

Im looking for a tool to save my colors with CMYK, RGB and HSL. So that I can print and compare, write some notes to every color and easy extract. Any idea? Im mainly using Inkscape, Gimp and QGIS ...