Hi,
When creating a form by drag and drop fields, all fields are displayed
unless you choose the hidden widget or you remove them from the field.
But how to hide or show a form field depending on whether the user has
completed a previous field?
Thanks,
Arnaud
--
The patch resolved almost all of them! It's left a single CRS that couldn't
be:
Could not execute: INSERT INTO tbl_srs(srs_id,
description,projection_acronym,ellipsoid_acronym,parameters,srid,auth_name,auth_id,is_geo,deprecated)
VALUES (63
321, 'Timbalai 1948 / RSO Sarawak LSD
Dario C wrote
> this is the error message:
The error confirms that your layer provider doesn't support the function
used in your expression.
Your expression works for a memory layer, instead.
AFAIK you couldn't directly perform a spatial filtering for an ESRI
Shapefile layer. I don't know if it
Hi Azzura,
You will need to run the entire process for each polygon. This is best way to
handle this is by writing a python script or using the Graphical Modeler. In
either case it would loop through the polygons, selecting a different polygon
each time, and then applying the different tools.
Thank you. I appreciate it
Il giorno gio 10 giu 2021 alle ore 21:26 Andrea Giudiceandrea <
andreaer...@libero.it> ha scritto:
> Dario C wrote
> > this is the error message:
>
> The error confirms that your layer provider doesn't support the function
> used in your expression.
> Your expression
this is the error message:
[image: image.png]
and here what I wrote:
[image: image.png]
Il giorno gio 10 giu 2021 alle ore 15:39 Andrea Giudiceandrea <
andreaer...@libero.it> ha scritto:
> Dario C wrote
> > I'm using "Provider Specific Filter expression".
>
> The filter expression is specific
Hi,
I have been playing with the 3D functions in QGIS with the latest version of
QGIS. Since drawing in 3D is normally something I do in a CAD, I have been
asked to do this is QGIS and ArcMap for this particular project (let’s just say
this reaffirmed my belief in the strength QGIS…).
Anyway,
Dario C wrote
> I'm using "Provider Specific Filter expression".
The filter expression is specific for the provider of the layer you want to
filter.
The filter is made at the data provider (OGR, PostgreSQL, MSSQL…) level. So
the syntax depends on the data provider. Not all the data providers can
Dario C wrote
> The issue is that I tried to write down:
>
> intersects( $geometry, geometry( get_feature( layer, attributeField, value
> ) ))
>
> But nothing happens :(
Hi Dario,
are you using the above expression as "Provider Feature Filter"/"Provider
Specific Filter Expression"?
Have you
APM wrote
> All blocks of the message contains
>
> "NOT NULL constraint failed:"
Hi Piet,
I've submitted a patch https://github.com/qgis/QGIS/pull/43671 which
hopefully fixes the issue.
If you want, you could try if it works for you. In case, let me know.
Regards.
Andrea
--
Sent from:
Thank you,
based on something I have already heard (:D)
what you suggested is the right way... I'll check.
Thanks
Il giorno gio 10 giu 2021 alle ore 15:03 Richard McDonnell <
richard.mcdonn...@opw.ie> ha scritto:
> I work a lot with National datasets, some with millions of geometries
>
> With
Hi Andrea,
I'm using "Provider Specific Filter expression". I don't even know how to
use "Provider Feature Filter".
And yes, I've replaced layer, filed and value with the real name.
thanks
Il giorno gio 10 giu 2021 alle ore 15:01 Andrea Giudiceandrea <
andreaer...@libero.it> ha scritto:
>
APM wrote
> After a 'make install' I received sevaral similar messages, please see a
> cut below:
>
>
> Could not execute: INSERT INTO tbl_srs(srs_id,
> description,projection_acronym,ellipsoid_acronym,parameters,srid,auth_name,auth_id,is_geo,deprecated)
>
> VALUES (63422, 'NAD27
Richard Duivenvoorde wrote
> During install QGIS tries to sync your local crs db (in sqlite) with a new
> list from ??? the installer, and SQlite complains about something (maybe
> that a crs already excists and you cannot overwrite it or so)?
Hi all,
it seems to me there is a regression in
I work a lot with National datasets, some with millions of geometries
With these geometries we use PostgreSQL with PostGIS. Make sure the Geometries
are indexed and it works very well.
You mention Oracle, you should be able to index your geometries, should speed
everything up on the database
Hi,
In this casa I don’t want to use “select by location” or “extract by location”,
because I’d like to use the original layer without exporting a new static
shapefile.
I don’t know what geometry Generator is and I’m going to check if it is
suitable with my needs.
My wish is to reduce
Dario,
To run a spatial query you need to use Select by Location or extract by
location. This assumes that you have two different layers.
I don’t believe it will do this for a single layer with the above.
Are you trying to use the geometry Generator?
Regards,
Richard
——
Richard McDonnell
Dear Andrea,
thank you for that!
To be honest, I have no idea how to deal with a patch!
Maybe you can give me a short advice?
Kind regards
Piet
Am 10.06.21 um 13:35 schrieb Andrea Giudiceandrea:
APM wrote
All blocks of the message contains
"NOT NULL constraint failed:"
Hi Piet,
Hi Richard,
The issue is that I tried to write down:
intersects( $geometry, geometry( get_feature( layer, attributeField, value ) ))
But nothing happens :(
_
Il giorno 10 giu 2021, alle ore 12:21, Richard McDonnell
ha scritto:
Hi Dario,
If you right click on any Vector Layer and select
Hello Andrea,
yes, this is the case!
All blocks of the message contains
"NOT NULL constraint failed:"
Kind regards
Piet
Am 10.06.21 um 11:11 schrieb Andrea Giudiceandrea:
APM wrote
After a 'make install' I received sevaral similar messages, please see a
cut below:
Could not execute:
Hi Dario,
If you right click on any Vector Layer and select Filter you can filter as you
wish.
Regards,
Richard
——
Richard McDonnell MSc GIS, FME Certified Professional
FRM Data Management
——
Oifig na nOibreacha Poiblí
Office of Public Works
Sráid Jonathan Swift, Baile Átha Troim, Co na Mí,
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