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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-2
votes
0answers
6 views

how to colored style on geoserver from atribut of SHP map [on hold]

i have .SHP map format, i want to colored based of atribut of map with style on geoserver, i hope can get the solving problem, thanks
0
votes
1answer
297 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 ...
1
vote
0answers
21 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 ...
3
votes
1answer
397 views

color gradient (or color ramp) in Arcgis and Qgis

I am currently working on my thesis and I would like to ask you: does anybody know the mathematical formula that calculates the color gradient in Arcgis and Qgis? In other words, which mathematical ...
0
votes
1answer
33 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 ...
4
votes
5answers
1k views

How to pansharpen LANDSAT 8 in GRASS?

Having used QGIS for quite some time for mapping, I was 'forced' to dig into GRASS as pansharpening is not directly executable in QGIS. After understanding more or less the structure, I did some ...
0
votes
0answers
64 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
41 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 ...
11
votes
6answers
1k views

Are there any convenient sources of color palettes to use in ArcGIS software while producing maps?

Are there any convenient sources of color palettes to use in ArcGIS software while producing maps?
1
vote
1answer
59 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 ...
4
votes
1answer
79 views

How do I combine bands in a tiff then convert to grayscale?

I have a large mosaic of tiffs in which I need to do the following: -Combine bands 4,3,2, for an infrared image then convert the image to grayscale without producing another dataset -This is easy on ...
2
votes
1answer
70 views

Sort colors from light red to dark red

I have the following png image displaying tanker traffic density: The colors are from dark red to light red, dark red means 'lowest density' and light red means 'highest density'. For example, the ...
23
votes
7answers
9k views

What is the best colour-ramp to use for elevation?

This is maybe rather subjective as it concerns style, but I would like to have a few decent colour ramps for my DEM when it is layed over my hill-shading. I have created the Swiss hillshade model as ...
4
votes
1answer
61 views

How to create a map colored by distance to nearest point in R

I'm new to GIS and R-- hope this question makes sense. I have a dataframe(geo07) containing two variables that record the long/lat values for about 6000 points (mat_long & mat_lat). These ...
1
vote
1answer
52 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 ...
1
vote
0answers
47 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 ...
2
votes
2answers
114 views

How to match colours in already mosaiced single image?

I have an already mosaiced image for a large area. I need to match colours in this single image. I do not have each image separately. I just have this large single image downloaded from GLS. How can I ...
0
votes
1answer
66 views

qgis's georeferencer renders my white map with a translucent blue tint, can I prevent this?

I'm running QGIS 2.0.1-Dufour on MacOSX and when loading a PNG or TIFF into qgis as a raster its always getting rendered with a blue tint. Here's what it looks like before being loaded into QGis's ...
2
votes
0answers
119 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 ...
1
vote
0answers
52 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 ...
3
votes
1answer
41 views

How to change the color of vector layer of QGIS in api?

I'm using QGIS-2.4.0 api to develop app in C++. When I add a vector layer to the app, the vector map's color would be random. I used QgsFeatureRendererV2 to get the geometry type of the layer, my ...
5
votes
1answer
139 views

Why do CMYK colours in ArcMap not match those in Adobe products?

I'm creating a map in ArcMap, based on a style guide which specifies colours in CMYK notation. So I've set the colours in ArcMap's color selector. The layer has no transparency set, and is the only ...
1
vote
1answer
83 views

A nice display of hillshade and my geologic map

i want to create a nice hillshade map covered by a grid or RGB map, with similar colour results in ArcMap like this: Is there a way to achieve this in ArcGis without transparency settings which ...
1
vote
0answers
36 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
1answer
130 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 ...
1
vote
0answers
39 views

Legend won't print in color [closed]

I am using ArcMap 10.1 and my legend will not print in color. Please help. I have a layer with points and symbols that show up in color on the map but not in the legend, what should I do?
2
votes
0answers
138 views

Adding colours from .style file to multiple shapefiles via script? [closed]

I have added 70 fill colours in a .style file. For adding these colours to my shapefile i would have to manually go to properties/symbology/match to symbols in a style/ then browse to the location ...
1
vote
1answer
166 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 ...
1
vote
0answers
130 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
2answers
404 views

In ArcMap 10.2, exporting raster as .tif with “use renderer” and “force RGB” still produces inaccurate colors

I have a DEM and my aim is to change its color ramp using ArcMap, then export this colored raster as a geotiff (8 bit). I checked "use renderer" and "force RGB" options but the results are not good ...
1
vote
1answer
121 views

Worsened image quality and false colours after georeferencing

When I georeference a map of vegetation types (about 20 colours, each representing a certain vegetation) the quality of the georeferenced map is really bad and some colours have changed (e.g. black ...
0
votes
1answer
123 views

How to convert excel csv file to filled contour Google Earth Map?

I have a csv file http://www.geocities.ws/radar/data2.csv. The first column is latitude. The second column is lonitude. The third column is precipitation type. 5 represents freezing rain. 15 ...
1
vote
2answers
104 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 ...
15
votes
1answer
356 views

Eye-friendly colours for long periods of work

Apologies if this question doesn't fit the rules here. I am digitising a large amount of remote footways and I will be panning, zooming a lot and I've done 2 days on this so far and always get quite ...
4
votes
4answers
1k views

Halo use background color

As you see on the attached image, I labeled contour lines on the map (in meter). Which function will allow the "halo" to take the background color of the map? On the image, the halo is greenish which ...
0
votes
0answers
59 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
2answers
169 views

Color gradient in symbology in ArcGIS 10.1 for interpolation raster

I have measured noise and want to create with this measured points a noise map with interpolation....is there any way in symbology to create a flowing transition between the different colors for the ...
1
vote
1answer
415 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 ...
0
votes
1answer
161 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 ...
8
votes
3answers
719 views

How to apply the four colors theorem in a polygon map in ArcGIS/ArcToolBox automatcally?

I need to apply the four colors theorem in a polygonal shape in a way that I do not need to choose manually each color to put in each region. I wish to knows if there is any extension, plug-in, script ...
2
votes
0answers
97 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
2answers
126 views

Is there any systematic way to pick two colors for a chloropleth showing a candidate's margin of victory

I have a simple 2-color map showing which candidates won in which precinct. Now I want to make one showing margin of victory within a precinct. So if candidate A won by a lot it would be dark green, ...
-2
votes
1answer
106 views

How to Insert color code to ArcMap? [closed]

I have a color code from OpenStreetMap and I want to insert this code of color to Arcmap, How?
1
vote
0answers
95 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 ...
0
votes
2answers
92 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 ...
1
vote
1answer
55 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 ...
3
votes
3answers
531 views

How to color-code geology maps with given CMYK colors?

I'm trying to understand whether it is possible to corectly display colours in British Geological Survey maps. Our client has a licence to use the shapefiles but unfortunately BGS don't provide SDL ...
2
votes
2answers
191 views

Convert ASCII Grid Colorized to Raster

I have an ASCII Grid file + .prj file and can visualize this in qGIS. I can colorize it by going to properties and using a Pseudocolor Ramp. However, I want to export this now as a TIFF / Raster. ...
0
votes
0answers
21 views

IColor reporting BGR rather than RGB

I've created a single point in ArcMap 10.1 SP1, and set it's color (SimpleMarkerSymbol) to Red = 16, Green = 0, and Blue = 255, or 1000FF in hex. I saved that as a layer package, and opened it back ...
9
votes
2answers
354 views

Is there a method to have the colour of a label automatically match the colour of the polygon indicated in the symbology tab?

My job requires that I produce several print maps every day, for a variety of different users. It is usually pretty straight-forward, but sometimes I have to make a map that uses rather ...