Hi Matthias,
Here is more info:
First, I receive a warning saying: "To create image 28346x22440 requires
about 1908 MB of memory. Proceed?" with an OK / Cancel button.
Then I press "OK"
A dialog appears where I can choose where to store the raster file.
Then a dialog titled "Image export options" appears, where I could do
various settings, like - again selecting the dpi, width and height and I
could "Crop to content".
I leave all settings as they are by default and press "Save".
Then the final and blocking error message dialog is:
"Trying to create image #1 (28346x22440 @ 300dpi) may result in a memory
overflow. Please try a lower resolution or a smaller papersize".
Then I can only press "OK" and the image isn't exported.
Thanks for having a look at this,
Andreas
On 2017-07-26 14:48, Matthias Kuhn wrote:
> Hi Andreas,
>
> can you send us the warning literally (German or English)?
>
> I remember an issue report (or gis.se question) about an artificial limit
> that was formulated like a warning but was indeed preventing from doing an
> export. Sounds pretty much like what you are experiencing.
>
> Matthias
> On 7/26/17 9:35 AM, Neumann, Andreas wrote:
>
>> Hi,
>>
>> I would like to export a large format QGIS print composer to a GeoTIFF file.
>>
>> Page format is 2.4 x 1.9 m and I would like to export at 300 dpi. It is for
>> sending to a copy shop to print out for a trade fair in our province.
>>
>> I can successfully export at 270 dpi, but if I go beyond, QGIS tells me that
>> I may experience a "memory overflow".
>>
>> My machine is 64bit (Win 7) and has 16GB of memory.
>>
>> Is this an arbitrary artificial threshold value where QGIS refuses to
>> export? Would it potentially work, if the barrier wouldn't exist? Could I
>> somehow bypass this barrier?
>>
>> Thanks if you have any idea.
>>
>> Andreas
>>
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