The property possessed by an object of producing different sensations on the eye as a result of the way it reflects or emits light
0
votes
0answers
31 views
Fill up polygons with field value
I have now defined my renderer with a color map
I want to fill it with a value in the end field of my shape file's attribute table with python
how to do it??
I use QGIS 1.8.0 with python 2.7.3
0
votes
0answers
12 views
Read Pixel Color of georeferenced image and get LatLng [migrated]
I have a colored georeferenced satelliteimage and would like to find out what color has which pixel at which position.
All I have is the georeferenced image and average programming skills in php and ...
0
votes
0answers
31 views
Worsened image quality and flase colours after georeferencing
When I georeference a map of vegetationtyps (about 20 colours, each representing a certain vegetation) the quality of the georeferenced map is really bad and the some colours has changed (e.g. black ...
1
vote
1answer
59 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
0
votes
1answer
25 views
A PROBLEM WITH XML Standard Layer Descriptor for GeoServer
I wrote an xml in Standard Layer Descriptor for GeoServer, with the objective to map a satellite image with discrete values. I wrote:
< ColorMap type="intervals">
< ColorMapEntry ...
1
vote
4answers
50 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 ...
6
votes
1answer
86 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
3answers
135 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 ...
3
votes
4answers
154 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 ...
2
votes
1answer
36 views
What defines a Class in the Heat map plugin?
What defines a Class in the Heat map plugin? As in:
"Black holes like that are usually caused by raster values exceeding the range of the color ramp. Try adding another class with a higher associated ...
4
votes
2answers
103 views
How to create a colormap where colors diverge at value 0 in QGIS?
I calculated a raster as difference of two other rasters. Now I want to create a colormap where one colour represents negative values and one colour positive ones. The two colours should become ...
1
vote
2answers
83 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 ...
3
votes
1answer
188 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 ...
3
votes
1answer
102 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 imgae and put it in a data frame. The image has to ...
2
votes
1answer
127 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
1answer
52 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 ...
1
vote
3answers
258 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
1answer
87 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 ...
2
votes
0answers
90 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 ...
3
votes
3answers
407 views
Make selected polygon a different color without covering everything
Working in ArcGIS 9.3
I'm selecting polygons by attributes and trying to have the selection show up as a light yellow. I set the selection color to the light yellow and it's the 'lowest/last' layer ...
3
votes
1answer
104 views
Labels with white (or other color) background
I tried to give my labels somekind of box and a backgroundcolor (or boxcolor) in QGIS, but i couldnt find the right option.
My labels are not readable because my layers are too dark.
I found offset ...
4
votes
1answer
166 views
Recoloring geotiff for visual presentation
I have a rather big Geotiff. It is the mosaic of four RapidEye satellite images. They are all a bit bland/grayish. When combined I would like to freshen up their colors so that they are more visually ...
1
vote
2answers
88 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
2answers
373 views
Is there a way to quick change the outline color of a polygon in ArcGIS 10 without open the “Symbol Selector” window?
Sei que é possÃvel alterar a cor de um preenchimento clicando com o botão direito na caixa do sÃmbolo de qualquer layer e aà basta escolher uma com simples.
Tem como alterar o contorno do polÃgono ...
1
vote
0answers
26 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 ...
2
votes
1answer
90 views
Website, tool or app to produce colored map of the United States?
Does anyone know of a website, Windows program or iOS app that has a clickable map of the United States and colors in the states that are clicked on? Looking to produce a map of states I have visited ...
2
votes
2answers
438 views
How to create a map with states by attribute value?
I'm using Qgis, but I am quite familiar with R and python. So I could use any of these.
I want a map of mexico but want to color the stats according to a certain variable. It goes from 0 to 100. So ...
0
votes
1answer
102 views
Coloring pixels based on values
I have an image where pixel values are integers, they go from 0 to 6 and I also have some 999.
I want the value 999 to be transparent, which I could achieve by myself. I would like values 0 to 6 to be ...
2
votes
1answer
143 views
How can I apply correct colours to an elevation raster?
I have a problem to display elevation data with pseudocolours. The channel 1 is from -3.40282e+38 to 149.717 . A colleague used 1.7. and it looks like it should (from blue to Red)
when I use QGis 1.8 ...
2
votes
2answers
290 views
How do I use ranges for raster colour map in QGIS
I have a raster layer in GeoTIFF format, with continuous data values between -1 and +1. For the colour map, I would like...
>0 to be green
= 0 to be grey
<0 to -0.25 to be pink
<-0.25 to ...
2
votes
2answers
855 views
Looking for a colormap for SRTM like OCM Landscape
In Quantum GIS there's an OpenLayers plugin. I would very much like to use the same colormap/scheme/theme used in the OCM Landscape layer and apply it to SRTM image I have.
I checked the the open ...
3
votes
2answers
263 views
How can I apply stretch in ArcGIS 10 Image Analysis Window?
I need to apply stretch to ArcGIS 10.1 exported raster. The best way to accomplish this task: Image Analysis Window, because there are fine tools to equalize raster data.
1 - This is my IRS-P6 24m ...
6
votes
2answers
1k views
How to change DEM's gradient colour?
I'm a newbie about GIS.
I'm from Italy and I've got a *.tif file of my region.
I've loaded it has raster but I have a question:
The dem has a gradient colour magenta.
How change this colour to ...
1
vote
1answer
136 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 ...
12
votes
4answers
2k 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 ...
1
vote
1answer
399 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 ...
2
votes
2answers
216 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
2answers
149 views
How to modifiy how selection highlights are displayed?
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 ...
2
votes
2answers
950 views
How to give multiple colors to features within a single shapefile?
I want to give multiple colors to different features within a shapefile based on attribute values , is this possible in QGIS ?
If yes what is the procedure ?
Is there a way to provide color by means ...
3
votes
2answers
628 views
ImageMagick's convert program changes PNG file format so that color/alpha info doesn't survive GDAL
It appears that ImageMagick's convert program changes something in my PNG file that causes GDAL processing to mess up the color and/or transparency bands.
My original PNG file gets processed ...
3
votes
2answers
1k views
How to create a color ramp in ArcGIS10 where the zero value is represented by white?
I have a simple problem which (to me) seems to be difficult to solve in ArcGIS.
The map I plot is a GeoTIFF with emission data. I use a default algorithmic color ramp (rainbow) to do so. Now I would ...
1
vote
1answer
175 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 ...
3
votes
1answer
273 views
Standard Colors for Landcover Maps
I have classified Landsat images into five classes - A variety of Palm, Water bodies, built-up/open area, other vegetation and miscellaneous. I used GRASS GIS for the process and the final classified ...
0
votes
1answer
137 views
NHD Flowline legend colors?
Does Anyone have legend colors for the NHD Flowline that USGS sets colors for theirs ? I'd like to get a copy of their color legend. They can be from their website, brouchure, lyr files or anything ...
8
votes
7answers
696 views
How to automatically set polygons borders to improve map readability when rendering thematic maps?
When mapping an value as a color to render a thematic map the objects borders can alter the map readability a lot. For example in this thematic map of the US counties with black borders:
There are a ...
5
votes
1answer
215 views
phong lighting scheme in arcmap?
I have seen a few DEM/hillshades in published journal articles that use a phong lighting scheme which gives surfaces a metallic luster. Does anyone know how/if this can be achieved in arcmap?
6
votes
1answer
347 views
How to modify the colors of a raster map to use only one color in varying shades?
I have a raster map in GRASS containing elevation values. I want to display the elevation values in only one color (specificaly blue) but in varying shades of blue. I tried the options in r.colors, ...
8
votes
4answers
2k views
How to use ColorBrewer in ArcGIS 10?
I've been using ColorTool (based on supreme ColorBrewer) for most of my mapping needs in ArcMap. After migrating to ArcGIS 10 I discovered that it will no longer be a case.
Are there any other ...
1
vote
1answer
186 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 ...
11
votes
7answers
1k views
Color palette conventions
I wonder if there is a "unified" source for map color conventions, that GIS map builders are encouraged to follow?
EDIT
To clear up my question a bit. I'm more interested in the color <-with ...
