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I georeferenced a map and it posted to canvas as a mirror image of the original map. I set my project CRS before starting and also made sure to set the same SRS for the Geotiff being created and saved. I made sure that my Eastings and Northings are correct.

Mirror imaged georeferenced map

Please see that Texas is on the wrong side of Louisiana, all text from the map is mirror imaged from the original way the map was georeferenced. North is still pointing north. I am using Version 2.82 and I entered the latitude longitude values in dd mm ss.ss

Do you know what I am doing wrong?


I re-attempted the georeference by adding points in clockwise motion, starting with top right corner. Output shows that georeferenced points & the map itself are mirror imaged. CRS is NAD27 Louisiana South EPSG: 26782. Transform type: Thin Plate Spline, Resample method: Near neighbor, Compress: None

Georeferenced map showing mirror imaged map with points also mirror imaged

closed as unclear what you're asking by underdark Jan 19 '18 at 19:16

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    Welcome to GIS SE! As a new user be sure to take the Tour. Would you be able to edit your question to provide more details like the GIS software and version that you are using, please? – PolyGeo Jun 13 '15 at 0:08
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    Is it a mirror image up/down (north-south) or left/right? – mkennedy Jun 13 '15 at 0:14
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    Did you reference by clicking sample points on another map, or did you enter the coordinates manually? – AndreJ Jun 13 '15 at 4:50
  • What software are you using? What steps did you take, in detail? – mdsumner Jun 13 '15 at 9:46
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    Are you using negative longitude values or not? I can't zoom in enough to tell. It looks like you have the values swapped because they should be negative. And that's going to georeference to lat/lon, not to the state plane zone. – mkennedy Jun 15 '15 at 20:57