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Sanjay Gangal
Sanjay Gangal
Sanjay Gangal is the President of IBSystems, the parent company of AECCafe.com, MCADCafe, EDACafe.Com, GISCafe.Com, and ShareCG.Com.

ArcMap tutorials by GISTutorials: Creating a Seemless Raster Mosaic/ Basic Georeferencing/ Advanced Labeling

 
December 12th, 2011 by Sanjay Gangal

Creating a Seamless Raster Mosaic

This tutorial shows how to mosaic rasters and how to correct the seem errors using the raster calculator and the focalmean function. Seem errors occur when two rasters don’t intersect correctly.

This method has changed in ArcGIS 10. It has adopted a python syntax. Also you don’t assign rasters algebraically like in previous versions. Instead you set the output to a new raster (it will be obvious within the Raster Calculator). The new syntax would look like this:

Con(IsNull(“myraster”),FocalStatistics(“myraster”,NbrRectang­le(2,2),”MEAN”),”myraster”)



Basic Georeferencing

This tutorial shows how to take a screenshot from Google Maps and correctly place it in space. This allows you to digitize buildings, roads, etc. from it and have them be correctly spatially referenced.



Advanced Labeling in ArcMap

This tutorial shows how to use the Expression-based labeling features of ArcMap to turn attribute based labels into any text you want.



Related posts:

Category: ArcMap

3 Responses to “ArcMap tutorials by GISTutorials: Creating a Seemless Raster Mosaic/ Basic Georeferencing/ Advanced Labeling”

  1. Karen. Schuckman says:

    The word is “seam,” not “seem.”

  2. Brian Wannamaker says:

    “This tutorial shows how to mosaic rasters and how to correct the seem error”

    Apparently not

Leave a Reply to Brian Wannamaker Cancel reply

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