How to Determining TextFrame Position in IDML Using XML and Python: Handling Negative Values

Question

After extracting the IDML file, I checked the `TextFrame` elements in the `Spreads.xml` file.
 
However, when I calculate the position using a matrix, I get negative values.
 
The document size and the `TextFrame` size are calculated correctly, but I’m not sure how to properly calculate the position.
 
Can you help me with this?

* I am using Python.

Marc Autret · Answer

Hi,Coordinate spaces in IDML are detailed in the specification. The origin of the Spread space is its center point: Then you use ItemTransform and PathGeometry elements to get space-relative coordinates, in pt. More on this topic:https://indiscripts.com/blog/public/data/coordinate-spaces-and-transformations-5/CoordinateSpacesTransfos01-05.pdf Best,Marc

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