Re: [Qgis-user] Offline background map for large regions

[Andreas via Qgis-user]

Hi Asim,

meanwhile I found out that creating a spatialite database needs (unlike
 postgres) only very little RAM for building. On the other side, after
running a wole day and night on conversion of the  ~30GB osm_europe.pbf
with ogr2ogr, I have a 180 GB database now which needs minutes to load...

Don't know if postgres is more performant. Setup is much more complicated.

Regards,

Andreas



Am 20.07.22 um 03:43 schrieb Asim:
>
> On 7/15/22 4:11 PM, Andreas via Qgis-user wrote:
>> I think postgres itself is not the problem at all, but the scripts that
>> move the vector tiles into the database. In the instructions for usage
>> of these import scripts is written that they need at least as much RAM
>> as the size of the vector file. So I assume it has to load the whole
>> file into memory before it can be processed.
>
> Thank you for the clarification, Andreas.  I'm new to the GIS ecosystem
> but the OGR FDW seems to be addressing the problem of not having to load
> entire vector data at once: https://github.com/pramsey/pgsql-ogr-fdw.
>
> Asim
>
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[Qgis-user] (no subject)

[Marco Gómez via Qgis-user]

Anular suscripcion
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Re: [Qgis-user] qt designer does not have/show QgsDateEdit widget

[Janneke van Dijk via Qgis-user]

Hi Richard and Andrea (and others),

thanks for clarifying/confirming - then it is not something I
misunderstood. I originally had the QDateEdit widget, which was working,
but giving a warning that it will not accept NULL values. As I would like
to be able to set it to NULL I thought of using QgsDateEdit. I have now
indeed managed to instead format the QgsDateTimeEdit widget to only show
the date, which will do for my purpose.

I am now trying to adjust the code that was working for QDateEdit to work
for the QgsDateTimeEdit with the following function that gets called
clicking a button. The first message will display the time and date
correctly, so 'now' seems to have the correct value. The second message
does not get displayed, but I also do not get an error message, and the
date does not get changed. Which makes me believe
"self.assesmentdate.setDateTime(now)" is not correct.

def assesmentdate_now(self):
if self and self.layer.isEditable():
now = QtCore.QDateTime.currentDateTime()
QgsMessageLog.logMessage(now.toString(), 'MyPlugin',
level=Qgis.Info)
self.assesmentdate.setDateTime(now)
QgsMessageLog.logMessage('test', 'MyPlugin', level=Qgis.Info)


What would be the correct syntax for setting the QgsDateTimeEdit widget to
show the current date?  Or does anyone have ideas how I can find out what's
happening, seeing that I am not getting error messages? The script gets
called by the attribute form.

Thanks for any thoughts,
Janneke

On Wed, Jul 20, 2022 at 10:44 AM Richard Duivenvoorde 
wrote:

> Hi Janneke,
>
> I'm on master here with designer with all qgs widgets, and I do not have
> it either.
>
> When I create a form though, with a field which has a datetime field, I
> CAN set the 'Field Format' to 'Date'-only...
>
> So maybe there is some extra sip/development work needed to make this
> widget also available in QtDesigner?
> (try to ask this question on the defv list?)
>
> Or (not tested), maybe you can create an ui iwth QgsDateTime, and manually
> edit the ui file?
>
> HTH, Regards,
>
> Regards,
>
> Richard Duivenvoorde
>
> On 7/19/22 20:28, Janneke van Dijk via Qgis-user wrote:
> > Dear all,
> >
> > I need a date widget that can be set to a null date. From
> https://qgis.org/pyqgis/master/gui/QgsDateEdit.html#module-QgsDateEdit <
> https://qgis.org/pyqgis/master/gui/QgsDateEdit.html#module-QgsDateEdit> I
> understand that this should be possible (from 3.14 upwards). In Qt Designer
> (osgeo4W/bin/qgis-designer.bat which I understand is shipped with QGIS
> 3.26) I only see the QgsDateTimeEdit widget.
> >
> > image.png
> >
> > How can I use the QgsDateEdit widget?
>
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Re: [Qgis-user] qt designer does not have/show QgsDateEdit widget

[Richard Duivenvoorde via Qgis-user]

Hi Janneke,

I'm on master here with designer with all qgs widgets, and I do not have it 
either.

When I create a form though, with a field which has a datetime field, I CAN set 
the 'Field Format' to 'Date'-only...

So maybe there is some extra sip/development work needed to make this widget 
also available in QtDesigner?
(try to ask this question on the defv list?)

Or (not tested), maybe you can create an ui iwth QgsDateTime, and manually edit 
the ui file?

HTH, Regards,

Regards,

Richard Duivenvoorde

On 7/19/22 20:28, Janneke van Dijk via Qgis-user wrote:

Dear all,

I need a date widget that can be set to a null date. From 
https://qgis.org/pyqgis/master/gui/QgsDateEdit.html#module-QgsDateEdit 
 I 
understand that this should be possible (from 3.14 upwards). In Qt Designer 
(osgeo4W/bin/qgis-designer.bat which I understand is shipped with QGIS 3.26) I only 
see the QgsDateTimeEdit widget.

image.png

How can I use the QgsDateEdit widget?

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Re: [Qgis-user] qt designer does not have/show QgsDateEdit widget

[Andrea Giudiceandrea via Qgis-user]

*Janneke van Dijk*
/Tue Jul 19 11:28:30 PDT 2022/

In Qt Designer
(osgeo4W/bin/qgis-designer.bat which I understand is shipped with QGIS
3.26) I only see the QgsDateTimeEdit widget.

How can I use the QgsDateEdit widget?


Hi Janneke,
AFAIK only a subset of Qgs* gui classes are available as QGIS custom 
widgets plugins for Qt Designer: see [1].


In the meantime that you search for and eventually find a workaround, I 
think you could file a Feature Request [1] so that some developer can 
add the plugin in an next release.


Best regards.

Andrea Giudiceandrea

[1] https://github.com/qgis/QGIS/tree/master/src/customwidgets
[2] https://github.com/qgis/QGIS/issues/new/choose___
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Re: [Qgis-user] GRASS r.series - ERROR: Unable to load GDAL library

[Nelson Ribeiro via Qgis-user]

Dear Andrea,

Confirmed!
Thank you.
Regards,

Nelson



From: Andrea Giudiceandrea 
Sent: 18 July 2022 16:01
To: Nelson Ribeiro ; qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] GRASS r.series - ERROR: Unable to load GDAL library

Il 18/07/2022 13:20, Nelson Ribeiro ha scritto:

Thank you very much for your support, I have
installed QGIS 3.22.8 - OSGeo4W-3.22.8-4.msi Standalone Installer

Hi Nelson,
please read my second reply message:

Il 17/07/2022 11:59, Andrea Giudiceandrea ha scritto:

Hi Nelson,
I can replicate the same issue using v.sample instead of r.series.

You can workaround the issue just copying the file "gdal305.dll", that is 
present in your QGIS installation directory under the \bin\ folder, with the 
name "gdal304.dll" in the same folder.

See https://github.com/jef-n/OSGeo4W/pull/10.

In addition to the above workaround, know that the issue has been already fixed 
and it will hopefully not occur in the upcoming QGIS 3.22.9 Standalone 
Installer.

Best regards.

Andrea
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