topic Failed Georeferencing ofTiff Raster in Data Management Questions https://community.esri.com/t5/data-management-questions/failed-georeferencing-oftiff-raster/m-p/752468#M42312 <HTML><HEAD></HEAD><BODY><P>In the process of georeferencing about a dozen Tiff rasters, approximately five failed to complete the process on a first attempt. I am using ArcGIS Destop 10.5.1 and the georeferencing tool.&nbsp; I first fit the raster to the display area of interest. Then I have been using the standard rotation and shift tools to position the raster so it is easier to pick out control points to make links. I then create 2-3 links using an Affine transformation. When I am satisfied with the results (sometimes deleting a link and picking another control point), I do an "Update Georeferencing".&nbsp; However, after this point for 5 of the 12 Tiffs, the raster moves off from the display and only the rotation position seems to have been saved.&nbsp;&nbsp;</P><P>I then end up having to repeat the same process and it usually works the 2nd time!&nbsp; I cannot figure out why this seemingly random error is occurring.&nbsp;&nbsp;</P></BODY></HTML> Thu, 16 May 2019 13:09:08 GMT MichaelODonnell 2019-05-16T13:09:08Z Failed Georeferencing ofTiff Raster https://community.esri.com/t5/data-management-questions/failed-georeferencing-oftiff-raster/m-p/752468#M42312 <HTML><HEAD></HEAD><BODY><P>In the process of georeferencing about a dozen Tiff rasters, approximately five failed to complete the process on a first attempt. I am using ArcGIS Destop 10.5.1 and the georeferencing tool.&nbsp; I first fit the raster to the display area of interest. Then I have been using the standard rotation and shift tools to position the raster so it is easier to pick out control points to make links. I then create 2-3 links using an Affine transformation. When I am satisfied with the results (sometimes deleting a link and picking another control point), I do an "Update Georeferencing".&nbsp; However, after this point for 5 of the 12 Tiffs, the raster moves off from the display and only the rotation position seems to have been saved.&nbsp;&nbsp;</P><P>I then end up having to repeat the same process and it usually works the 2nd time!&nbsp; I cannot figure out why this seemingly random error is occurring.&nbsp;&nbsp;</P></BODY></HTML> Thu, 16 May 2019 13:09:08 GMT https://community.esri.com/t5/data-management-questions/failed-georeferencing-oftiff-raster/m-p/752468#M42312 MichaelODonnell 2019-05-16T13:09:08Z Re: Failed Georeferencing ofTiff Raster https://community.esri.com/t5/data-management-questions/failed-georeferencing-oftiff-raster/m-p/752469#M42313 <HTML><HEAD></HEAD><BODY><P>I think I figured out the issue. Because &nbsp;I do the manual rotate/shift before doing control points, at times the raster can be aligned well by creating only two control points.&nbsp; When I did this, I apparently used my default (1st order polynomial transformation) instead of choosing a zero order transformation.&nbsp; When you try to do a 1st order with less than 3 control points it does not give an error message, it just deletes all the control points and apparently the last shift move.&nbsp;&nbsp;</P></BODY></HTML> Thu, 16 May 2019 15:30:34 GMT https://community.esri.com/t5/data-management-questions/failed-georeferencing-oftiff-raster/m-p/752469#M42313 MichaelODonnell 2019-05-16T15:30:34Z