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For a scientific project I am trying to create a set of PDFs in QGIS with a fix layout (in the print composer) but per PDF a) different map item attributes (extents) and b) a QR-code to identify this PDF. The QR-Codes are already created with a python module (-> .svg) and the extents of the map items are a simple raster. The map content is a WMS which is embedded in the QGIS project.

My idea is to open a pre-defined print composer, iterate through the raster (has simple coordinates) and generate a PDF per iteration with the actual a) map layout and b) QR-code.

I am working with QGIS 2.12.1 (uses Pyton 2.7.5)

  • When you say "iterate through the raster", do you mean pan/zoom to different areas of it in the composer? – artwork21 Dec 3 '15 at 12:59
  • We've done similar bulk print to pdf for the selected features in SurveyingCalculation plugin. It is available in the QGIS plugin repository. See batch plotting.py and batch_plotting_dialog.py – Zoltan Dec 4 '15 at 0:18
  • Right, I mean to pan to different areas. And I will have a look at this plugin, thanks! – Marco Dec 6 '15 at 9:43
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Finally I created the PDFs with the atlas plugin in the print composer of QGIS. In the atlas configuration I set my shapefile as covering layer and used a dynamic expression for the filename like

'Map_'|| x_min(@atlas_geometry) || '_' || y_min(@atlas_geometry) || '_' || "SCALE"

The QR-Codes I generated before are shown as an image with an also dynamic expression, in this form

to_string( 'C:\\......\\' || x_min( @atlas_geometry ) || '_'|| y_min( @atlas_geometry ) || '_5000.svg')

for the scale 1:5000. Both worked pretty fine and took its time (about 3 days for the 20'000 maps). Actually my problem is: The printed WMS data (especially the fonts) are too small, the output (PDF or image) doesn't look like the preview in the print composer (see 2 screenshots). I just used the "export to pdf" function without chaning any settings. How can I get the output scaled like in the preview? output preview

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