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I want to make a GeoTIFF file to use in a navigation app. What I currently have is a PNG with the map and a XML that goes along with it. Does anyone know how to somehow combine them and export it as a GeoTIFF?

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    depends on what is in the XML file?
    – Ian Turton
    Commented Mar 16 at 12:28
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    Welcome to GIS SE. As a new user, please take the Tour. Questions here need to contain all the information necessary to answer the Question. Please Edit the Question to indicate what is in the PNG, and what the XML contains (if it's a birthday party picture and a list of gifts in XML, you can't make a GeoTIFF from it). Also, navigation is usually a vector process, so you might want to think about how a GeoTIFF would even help.
    – Vince
    Commented Mar 16 at 12:30
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking.
    – Community Bot
    Commented Mar 16 at 14:39

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I assume your PNG is a raster map and the XML file contains the georeferencing information. Try loading the PNG file in QGIS using Add Raster Layer.

If the XML file contains georeferencing information for the PNG file, it will be automatically read by QGIS and will create a georeferenced raster layer. Right click on this layer and Export it to GeoTIFF.

In case your XML file does not contain georeferencing information, you can try georeferencing the PNG file using Georeferencer (given you have some reference points on the map, like grid line intersections). From Georeferencer you can directly save the image as GeoTIFF.

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  • Here is what the XML file contained: docs.google.com/document/d/… I also tried to put both the map and the file in the same folder with the same name and import it into QGIS but i didn´t work. When i tried with another PNG with a PGW file it worked as it should. Is there any way to convert the data in the XML file into a PGW file? Commented Mar 16 at 15:41
  • The file you shared is the aux.xml file associated with GeoTIFF files. This does not contain any information you need for .pgw file. If you have the original .TIFF file, then open it in QGIS and go to Information in Properties. Find the Origin and Pixel Size parameters. These will be in x,y format. Now make the .pgw file using a text editor, in the following format: Pixel Size(x) 0.0000 0.0000 'Pixel Size'(y) Origin(x) Origin(y) eg: 1.085196999397 0.000000000 0.000000000 -1.085185275323 665043.952853597468 3486958.665822010953
    – Abhijith
    Commented Mar 16 at 18:05
  • The aux.xml files can contain extra information about .png files but the issue is that this certain aux.xml file contains only the image statistics (min, max, avg values of each band).
    – user30184
    Commented Mar 16 at 20:27

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