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I am trying to set up a GIS database in QGIS (2.16.1) containing some geological information. I've created a shapefile (polylines) and added a map-tip to it which displays a cross-section related to the respective line (see image).

example

HTML in Layer Properties --> Display:

This works well as long as I use absolute paths in the attribute table of the shapefile, linking to the location of the cross-section.

BUT I would like to use relative paths because there is a chance that the folder containing the QGIS file, the shapefiles and the cross-sections will be copied to a different location.

I have tried but did not succeed and google and the search here did not help me. Can someone help me with that?

One more thing: Is there a possibility to re-size the map tip according to the size of the images? I know there is a way to set a fixed size but the cross-sections I am displaying have different sizes each time.

I am relatively new to QGIS and Python.

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1 Answer 1

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In QGIS 2.16.1 you can use the variable @project_folder. This returns the path of the folder the project is saved in. When the data or datafolder is saved in this project folder as well you can concatenate a relative path.

enter image description here

You should ask one question a time, see the tour, as this helps other users find the question and answer.

But for the defined width you can add width = "100" in the image tag:

<img src= "[%"path"%]" width = "100">

See w3schools for other HTML tags as well.

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  • This was exactly what I was looking for! Both tips worked out. Thank you very much for the helpful and quick reply.
    – Cait
    Commented Aug 24, 2016 at 13:17
  • Happy I could help :)
    – nielsgerrits
    Commented Aug 24, 2016 at 15:16

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