I'm trying to export large images from the QGIS 2.16.3 print composer. As far as I can tell, whenever the calculation of dpi and export size exceeds ~1615MB, QGIS will show the message:
"Trying to create image #1( 21239x25360 @ 317dpi ) may result in a memory overflow. Please try a lower resolution or a smaller paper size"
And then not attempt the export. The same limitation appears to be applied when trying to do the export from the command line as well.
Is this a standard limitation, or is it based on system specs? (I have 32GB of system RAM). Is there is a way to override it and make QGIS attempt to output the image?