Changes between Version 4 and Version 5 of WikiStart


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Timestamp:
Jul 26, 2018 1:02:05 PM (7 years ago)
Author:
Uriel
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  • WikiStart

    v4 v5  
    2929To use the data in Maperitive, you must enter the command {{{set-dem-source name=SRTM1}}} or {{{set-dem-source name=SRTM3}}}.
    3030
    31 '''Generating the Shading:''' The nicest shading method Maperitive provides is called "Igor Shading", named after the creator of Maperitive. This will generate a single-color terrain shading of the world similar to this: [[Image(12.png)]]
     31'''Generating the Shading:''' The nicest shading method Maperitive provides is called "Igor Shading", named after the creator of Maperitive. This will generate a single-color terrain shading of the world similar to the image below. Another method of shading called "hypsometric" provides a multi-colored shading where different altitudes have different colors.
     32
     33[[Image(13.png)]]
     34
     35Igor shading can be generated with the [http://maperitive.net/docs/Commands/GenerateReliefImageIgor.html generate-relief-igor] command. Explicit bounds can be specified, or the command will use the currently set geo bounds in Maperitive ([http://maperitive.net/docs/Commands/SetGeometryBounds.html set-geo-bounds]). An important parameter of the shading is {{{sample-rate}}}. This reduces the size of the image data by subsampling. A sampling rate of 1 will load the entire height image into RAM; a sampling rate of 2 divides this by 4, 3 by 8, and so on. However this also reduces the quality of the image accordingly, so higher sampling rates should only be used for lower zoom levels.
     36
     37Black is the default color for shading but it can be set to other colors.