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I just started using QGIS for a research project and I am not at all familiar with the software nor the formats used. I have a shapefile representing the different departments of France, delimited by borders, and a TIFF file with data points from all over the world that I want to extract and put in the shapefile.

I would like to capture the data from the TIFF file and compute an average for each department (from the shapefile), and put the results in a table (one average data point for each department).

How to do that?

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Welcome to gis.stackexchange!

You are looking for the Zonal statistics raster analysis tool:

Zonal statistics

Under Raster layer select your raster, while Vector layer containing zones is your departments shapefile :)

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    it works! thank you so much!! – Danellb May 20 at 14:06

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