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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0
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2answers
19 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 ...
2
votes
1answer
539 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 ...
1
vote
1answer
42 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 ...
1
vote
1answer
109 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 ...
0
votes
1answer
33 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 ...
0
votes
1answer
45 views

Change color of feature (active cursor row) with ArcPy

I have a selection of polygon feature and with a cursor loop I walk through them. I determine the extent of eachfeature and arcmap will zoom to the feature. My default selection color in ArcMap is ...
0
votes
1answer
429 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 ...
3
votes
0answers
499 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 ...
3
votes
0answers
136 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 ...
2
votes
0answers
33 views

How does ArcGIS Pro choose default color for first layer added to Map?

When I add my first vector dataset to the Map in an ArcGIS Pro project that I created using Map.aptx, it always comes in using a gaudy brown color like in the graphic below. Doing the "equivalent" ...
2
votes
0answers
108 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 ...
1
vote
0answers
47 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 ...
1
vote
0answers
67 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 ...
1
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0answers
28 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 ...
1
vote
0answers
57 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 ...
1
vote
0answers
115 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 ...
1
vote
0answers
65 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 ...
1
vote
0answers
34 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 ...
1
vote
0answers
249 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 ...
1
vote
0answers
87 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 ...
1
vote
0answers
217 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 ...
0
votes
0answers
8 views

QGIS colors not rendered accurately

After installing 2.10.1-Pisa, a very annoying problem suddenly appeared. As you can see, colors in the left sidebar are not rendered correctly in the main window (nor in the print manager). Instead, ...
0
votes
0answers
15 views

redraw canvas when add new overlay?

Good day! A little problem: how to redraw canvas when I add overlay layer? Firstly load osm map, then creates canvas. So when I push the botton and add another layer it looks like sandwich and canvas ...
0
votes
0answers
36 views

Modifiable SVG fill color, stroke and stroke width

I have a lot of custom svg files made in Inkspace. I need to be able to change their fill color / stroke color / stroke width using QGIS. I have found a similar topic, however the solution mentioned ...
0
votes
0answers
33 views

draw coloured LINESTRING over map [.NET (C#) if possible]

I need to render linestring on the map (possibly OSM map) where each pixel (or at least segment) has assigned custom color. In my linestring, each point defining the line has also color definition. ...
0
votes
0answers
25 views

Different colors of rasters after loading back to QGIS

I am experiencing this issue longer time but sometimes it is really annoying so I would like to solve it. When I save an image from QGIS - no matter when using Project/Save as image or using Export ...
0
votes
0answers
54 views

Using the phase 1 habitat styles?

I am utilising the phase 1 habitat styles and wanted to show 'mixed scattered trees' which is essentially a layer with two different types of green dot. I cannot figure out how to do this and also ...
0
votes
0answers
16 views

Changing color of multispectral Raster Image using PostgreSQL/PostGIS query

Would like to change the color of a multispectral Raster Image. looking for changing band rendering values for Red, green and Blue bands using PostgreSQL/PostGIS query. I have loaded the raster ...
0
votes
0answers
45 views

Google Earth/KML colors of polygons darken when extruded

I'm playing around with KML, trying to create a multivariate map with a choropleth based on one variable and extrusion/perspective height based on another. Here is an example of a Google Earth image ...
0
votes
0answers
118 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.
0
votes
0answers
74 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 ...
0
votes
0answers
86 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
0
votes
0answers
55 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 ...