Tag Info

Hot answers tagged

13

I think the literal answer to your question is "not really" (aside from things like blue=water or blue/red=Dem/Rep). It depends on how/what other data is displayed on a map and the map's purpose whether, for example, county boundaries are a light color or dark color. There are plenty of places where color choice is discussed. Some examples of books (I'm ...


11

For thematic maps, the handy Colorbrewer has an ArcGIS plug-in, ColorTool The built-in styles also contain lots of professionally selected color palettes and ramps that you could repurpose for other needs. To look at the styles without having to dink around in ArcMap, you can view them in PDF form


8

You can change the styles of the shape file in the layer properties. Double click the layer and select style. Select Categorized style and choose a field you want to visualize. Remember to classify your values before leaving the dialog.


7

You can have a different approach for that problem. 1)from line width: line width units=map units. 2)map scale rules: close maps=thick lines, far maps=thin lines. In QGIS you can do both.


7

Yes, it can. Phong shading is a sum of ambient, diffuse, and (specularly) reflected light. The ambient portion is represented by the usual map of the DEM. The diffuse portion is computed with a hillshade. A "hillshaded DEM" is a weighted sum of ambient and diffuse reflections. The formula for the reflected part of the image can be computed in terms of ...


7

I usually come at this question from the angle of "what is going to enhance, and not obscure, my data?". Tufte talks about the some of the uses of colours in maps: to label, to measure, to represent, and to enliven. Choosing DEM colours is usually mostly for the latter (enlivening) - to make them look nice. For example, the default 'atlas coloring' of many ...


6

This seems to work for me on a -1.0 - 1.0 NDVI raster Double click on the raster layer in QGIS table of contents/layer list Click "Style" tab (1st tab on the left) Select "Render as" -> "single band gray" and "Single band properties" -> "Color map" -> "Colormap" Click "Colormap" tab (2nd tab from the left) Click "Add entry" and add the following entries: ...


6

If your data consists of points and you would like to create a heatmap, QGIS has a handy heatmap plugin. There is a great tutorial on creating heatmaps from point data here. Often it is useful to display categorical data in your maps. In this case, I would recommend using the integrated QGIS ColorBrewer located in the style manager. There is a great ...


6

As @Baltok alluded to, you are trying to have the Selection on a particular layer be treated in the same way as other layers are, with respect to drawing order. I think that by default, and design, ArcGIS makes the Selection override the symbology of anything that is underneath it, as a means of making it easy to find the selection. Since you are selecting ...


6

Ok I think from your question that what you need to do is create a style which can be applied to the same data set for the same colour ramp. Assuming this is what you have meant. For example, take rock classification from the British Geological Society. Once you have classified each rock type into a relevant colour. Open the layer properties by clicking ...


5

This is relative; best colours for associative data. I say this because, when I was doing geography in high school, it was quite the taboo to draw anything other than water on the map as blue. Often losing marks when we did, even getting close to purple was avoided. When I went to college, major highways were colored blue, in fact, a trademark blue; Nova ...


5

According to Corine Land Cover Legend, "industrial" is purple. This convention relies solely on solid colors, no hatchings or similar.


5

I recently came across some of the work of Sidonie Christophe that has particular bearing to this subject. While in the particular paper I'm referencing (Christophe, 2011) she proposes a more general set of cartographic rules governing the choice of color for objects, the rules she proposes are so intuitive that I suspect they are in general implemented in ...


5

My favorite effect for readability/aesthetics is a "gradient fill". If you are using ArcGIS software, this effect is fairly simple to implement... Here is a good blog post from ESRI's team at the Mapping Center: Quick tint bands


5

You can create Halo Text as as current workaround This Guide runs through labeling in QGIS http://mapeoamano.org/en/manuals/how-to-prepare-a-high-resolution-large-format-map-using-qgis


5

Geoserver layers have associated styles. These styles are written in Styled Layer Descriptor (SLD), a subset of XML. To change your styles, you'll have to edit the SLD. In Geoserver, the SLD can be edited using the Style Editor in the Styles Page. Pretty ain't it? Fortunately, you don't have to edit the Styles by hand. A workaround is to use a GIS ...


4

If I'm understanding your goals correctly, here's how I would approach the problem. Storytelling by screenshots: 1) Go to the properties > Symbology tab for your layer. 2a) In the left-most props window, I chose a color ramp. Notice I inverted it. 2b) Next, I right-click the ramp and select Properties. 3) In the middle properties window, select the ramp ...


4

I've stumbled over the following site http://www.planning.org/lbcs/standards/ (Land Based Classification Standards) Theres a PDF and a spreadsheet that define certain colours to certain types, But I agree with everyone here in saying it really depends on what your showing.


4

So, I use swiss hillshade for most of the maps I use (here's a screenshot from California's Central Sierra) and tend to use a red/beige-grey theme that loosely follows the philosophy that Simbamangu described of not being too in your face (ie, it's not super colorful and in some spots is even a little drab, but the information is conveyed and I can layer ...


4

Expanding on one of themes in Simbamangu's very good answer: the basic problem with elevation shading using any colours at all other than neutral greys is the inescapable tendency for us to interpret meaning from the colours. For example a common rendering technique is to use deep greens for the valley bottoms, progressively lighten as one travels upslope, ...


4

Hum, OpenLayers OCM Landscape layers don't use any sort of elevation colour ramp as far as I can see. If you wanted to achieve the OCM effect I think you would do this by making a hillshade layer and then overlaying this with a vector polygon having the same extents as the hillshade layer. Then set the fill of the polygon to a light blue-grey and play with ...


4

QGIS does not store the style in the layer data itself because it handles different formats so that would be hard. Styles are stored in the project file or in a qml file. To export the QML file. Open the Layer Properties and select the Save Properties button. Tip: If you name the qml file the same as the vector file it will auto style when you open it. ...


3

I have found another solution that does not involve editing the color ramps. ArcGIS allows to color a given value (the background color) in its own color - this is exactly what I wanted: So I will stick with a default colorscale and just color 0 white. Thanks anyways, elrobis!


3

The example you show is actually about the shade of colour as much as opacity. By setting a higher opacity you are changing the output colour to a light grey. Try setting it to a light grey to begin with zero transparency, this will give you more control and have a similar effect. A simple method of obtaining more granular control of opacity is to simply ...


3

if I understood you right this great tutorial should answer your question: http://woostuff.wordpress.com/2011/06/06/one-of-my-favorite-features-of-qgis/ p.s. from the same author there is alos a follow-up: http://woostuff.wordpress.com/2012/01/25/improvements-to-the-qgis-rule-based-rendering/


3

I agree with Mapperz. Here are a few examples of the variety I found in a few seconds. (ok minutes;-) air traffic USGS DRG Cement Charts Bathymetry and many more


3

From a previous comment I made: I emailed the developers (gis.cancer.gov/tools/colortool) and received the response: "The current installer does not fully succeed in ArcMap 10 environments, however you can manually add the "ColorToolPro9_2.0.tlb" from the installation location (usually c:\program files\NCI GIS Tools\colortool) to add the command to a ...


3

National Cancer Institute have not updated the excellent ColorTool for ArcGIS to ArcMap 10 yet:suggest that an email request sent to the ColorTool Technical Support: gistools@imsweb.com http://gis.cancer.gov/tools/colortool/


3

If you're using gdaldem color-relief there is a colour ramp somewhere near the bottom of this page: http://fr.wikipedia.org/wiki/Aide:Cartographie It's not bad for some purposes, but not wonderful. Better perhaps with the colours faded a little? As you know, EI suggests elevation intervals in the sequence 0,25,50,100,250,500,1000...x, it might be possible ...


3

A World version with US States included http://www.travbuddy.com/world-travel-map US Version only http://www.ammap.com/visited_states/ (Embeddable for both)



Only top voted, non community-wiki answers of a minimum length are eligible