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
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2answers
138 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
2answers
2k views

Quickly changing outline color of polygon in ArcGIS Desktop without opening Symbol Selector?

In ArcGIS Desktop 10, I know it's possible to quick change the fill color of a polygon by right-clicking the symbol box of any layer and just pick a simple fill color. Is there a way to change the ...
2
votes
2answers
616 views

How do I create a negative to positive value raster with neutral 0?

I have a raster layer with a band with values from -137 to 9229. I want to create a color scheme showing how far from 0 the positive numbers are in one color, and how far from zero the negative ...
2
votes
3answers
28 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, ...
2
votes
1answer
401 views

gdal_translate produces tif with different colors as original

I am using SDE as my raster data source with the ultimate goal to tile this dataset: I am running the following gdal_translate command to generate the initial VRT: gdal_translate -projwin 390605 ...
2
votes
1answer
547 views

Special background layer not coloring in Kartograph map

I'm testing out Kartograph according to the documentation and a linked gist. Both my US and non-US layers color correctly, but I can not get the special "sea" layer to fill. I found an example here ...
2
votes
2answers
298 views

How to keep (complex) color table when exporting from GRASS

I understand how to work with color tables within GRASS - but is there any way to preserve color tables when opening the raster in a different program? For example, I created a color table in GRASS ...
2
votes
1answer
57 views

pyQGIS changing Paletted Raster Layers to Grayscale

I've written a plugin which essentially imports a number of colour geoTifs (map tiles) which works correctly but it would be great to display these as Grayscale after loading in. The geoTifs load as ...
2
votes
2answers
273 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. ...
2
votes
2answers
450 views

How to add an image to an existing data frame using Python?

This is the first time I am using Python on my own, and I have searched for this answer for a few hours with no luck. I am wanting to take a .JPG image and put it in a data frame. The image has to ...
2
votes
1answer
92 views

Change text color of PopupMobile

I am facing the problem that with some mobile Browsers like DolphinHD and Android Browser that the browser makes the text color white, and the background is also white. So i want to change the ...
2
votes
1answer
287 views

automate color palette generation?

I frequently am in need of color gradients that aren't readily available through ArcGIS or the ColorBrewer add-in. I find the process of manually creating gradients in Arc very tedious: saved custom ...
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
22 views

Black map after attempt to style by column in QGIS [closed]

I'm very new to QGIS and I'd really appreciate some guidance. I have a shapefile of NYC census tracts and 2 csv info files with tract info joined with it. I'm trying to style the individual tracts to ...
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 ...
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 ...
2
votes
3answers
1k views

how to change color of feature to mark it as recently modified with openlayers

I am developing a crowd sourced app using openlayers. after user clicks an feature, a popup form is displayed. After clicking the save button, the data is used in processing which takes some time so ...
2
votes
0answers
147 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
2answers
2k views

How to style a shapefile in GeoServer?

I have a shapefile data of buildings. I added it to GeoServer and serve it as a WMS layer. When I check my own maps in the browser my polygons of building appear black color and I want to change it's ...
1
vote
2answers
97 views

how to color polygons with random color in QGIS

I have a map with a large number of polygons that I want to colour individually for display purposes. There is not particular pattern required, only to present them as individual catchments in a ...
1
vote
1answer
48 views

Why are color settings not saved when exporting to a new file?

I extracted with QGIS a municipality from a state map, then divided it with a grid. I don't want the borders of the grid features to be seen so I changed the color of the map and the color of the ...
1
vote
1answer
160 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
4answers
188 views

Batch visualization of raster (grid) files

I have about 100 raster (grid) files (in the "ascii grid" format) of drought index. All cover the same area of interest but at different times of year. I need to create images from the grids with ...
1
vote
1answer
227 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 ...
1
vote
1answer
29 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.
1
vote
1answer
35 views

QGIS get currentfeature's color in the Expresions Builder

In QGIS Expression builder. I want to obtain the color code of the current feature. I mean: My layer contains lines, each one is painted with a different color. Now I want to assign that color to ...
1
vote
1answer
116 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 ...
1
vote
2answers
203 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 ...
1
vote
2answers
151 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
2answers
53 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 ...
1
vote
1answer
438 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, ...
1
vote
1answer
70 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 ...
1
vote
2answers
169 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 ...
1
vote
1answer
797 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 ...
1
vote
1answer
24 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 ?
1
vote
1answer
18 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 ...
1
vote
2answers
47 views

Adjust Color Theme of CartoDB Basemap “Dark Matter”?

I wanted to know - but haven't found the solution elsewhere - whether it is possible to adjust the color theme of the CartoDB basemap "Dark Matter". I'd only like to change the colors of the water ...
1
vote
1answer
109 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 ...
1
vote
1answer
409 views

Changing color of raster images based on their data values - gdal

Let's say I have 1 band raster images with Gray Color Interpretation and I want to change their color based on their data values. Data values -1, will be Blue, -0.5 will be Light Blue, 0 will be ...
1
vote
1answer
621 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 ...
1
vote
1answer
85 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 ...
1
vote
1answer
156 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 ...
1
vote
1answer
299 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
1answer
192 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 ...
1
vote
1answer
169 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 ...
1
vote
1answer
182 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 ...
1
vote
1answer
364 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
1
vote
2answers
211 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 ...
1
vote
1answer
404 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 ...
1
vote
1answer
150 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 ...