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I want to know whether we can perform 3d analyst in Q-Gis? If yes, means where is that option present?

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    What kind of 3D stuff do you need. – Nathan W Jul 11 '13 at 11:13
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    @arun If your work is related with terrain data then you can Please check following link qgis.spatialthoughts.com/2012/03/… & Most of the times QGIS is better than ArcGIS : ) – Sunil Jul 11 '13 at 11:21
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    @ Nathan W i want to perform Raster math and Interpolation. – Arun Jul 11 '13 at 12:00
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    You have both a raster calculator and an Interpolation plugin. – Gerardo Jimenez Jul 11 '13 at 13:03
  • i want to develope TIN from raster is it possible as in the case of ARC GIS? – Arun Jul 13 '13 at 6:36
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In 3D rasters, with three spatial dimensions plus a data value dimension, the point elements are called voxels. GRASS GIS provides voxel operations. Map algebra tools are provided in r3.mapcalc.

If you are unfamiliar with how to set up QGIS to take advantage of these tools check out the QGIS GRASS Cookbook, or for a more visual tutorial see Setting Up A Working GRASS Environment in QGIS.

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