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If you find these tutorials useful and would like to link to them from your own pages,please contact the Drew Spatial Data Center Director, Dr. Catherine Riihimaki via email. You are invited to leave comments or ask questions in any of the Comment areas of each tutorial page. |
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Expanded and Adapted from Columbia University Libraries (2010) "Georeferencing an image in ArcGIS," Accessed August 2, 2010 from http://www.columbia.edu/cu/lweb/indiv/dssc/eds/georef.html All information indicated by an asterisk (*) is taken directly from the Columbia University tutorial without change. Other items may have been changed or adapted as necessary.
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- Choose Rectify from the Georeferencing pull down menu. The Save As dialog box will appear.
Georeferencing Save As dialog box for saving georeferenced files - For each of the options in the dialog box, fill in the following values:
- Cell Size: Leave the default filled in by ArcMap
- NoData as: Leave the default filled in by ArcMap
- Resample Type: Nearest Neighbor (for discrete data)
- Output Location: ArcMap defaults the output location - that is, the place where the program will save your newly georeferenced file - to the location from where you added it to the map. If you want to save your georeferenced image file to a different location, you will need to click on the browse button and add the new location. We recommend putting the new file in the same location as the other map files.
- Name: Give your file a name that will allow you to remember what it is
- Format: TIFF (changing this setting will change the file extension in the Name field - this is perfectly normal). This will, however, create an ugly, black background that will partially obscure any elements you might want to show underneath the georeferenced image. Choose TIFF as your Format option only if you will be using the image as a stand-alone element or as the basemap itself, and not if you are going to put it on top of another basemap.
Note Choose TIFF if you want to use your georeferenced files in ArcPad with the GPS units for mobile GIS
- Format: GRID (changing this setting will change the file extension in the Name field - this is perfectly normal). Use this Format option if you want to put the georeferenced image over the top of another basemap.
Note GRID formats are not supported in ArcPad. Do not choose this format if you want to use the georeferenced image on the GPS unit for mobile GIS applications.
- Compression Type: None
- When you've filled in all of the values, click OK.
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