[gdal-dev] QGIS3 - Save Map as Image dialog bug?

[Even Rouault]

Idan,

this should rather be reported to the QGIS bug tracker. Sounds more like an issue how it uses 
GDAL rather than a bug in GDAL itself.

Even

> Hi,
> 
> i think there is a bug in the Save Map as Image dialog in QGIS3:
> 
> the initial values that are set when you open the dialog look OK, also the
> calculate extent by layer work OK, but when I change the scale it changes
> the extent to unrealistic values, and when I change the scale back to the
> initial value it doesn't restore the extent value.
> 
> As there are relations between the extent, scale, resolution and image
> size, I suggest there will be an option to choose which parameter is
> effected when another parameter is changed.
> for instance, when changing the scale, one of the following parameters
> could be changed accordingly: Image size or resolution or extent. the other
> parameters should be to be kept fixed.
> 
> When I tried to save a large image, I got an error that there isn't enough
> memory to allocate.
> Could we batch process smaller tiles in memory and stream them to disk and
> this way to overcome the memory limit?
> 
Regards,> Idan.


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