Hi Roland,
I pasted your script into QGis-Version 3.38.1, and had some crashes,
too, but not always.
But even if there was no crash, then the form-configuration afterwards
had no fields.
I think, the problem could be, that you first store the tabs, than clear
them and later use the previou
Hi,
Python inside QGis has no access to plugins installed by pip if called
from normal shell.
But running "pip install reportlab" from the osgeo4w-shell should do it.
"pip show reportlab" after pip-from-shell-installation returns
"Location:
c:\users\ludwi\appdata\local\programs\python\pyth
Hi,
my personal experience with file based data storage in my very private
cloud (something like sharepoint) was, that just opening a Qgis project
with gpg layers causes many uploads, because each access (open, read,
write... ) changes these files. In a multi-user environment this would
certa
That depends on the kind and state of layers You want to count:
# All layers (as listed in TOC, included: "non-drawable" and invalid layers)
layers = QgsProject.instance().layerTreeRoot().findLayers()
# list-items: "QgsLayerTreeLayer"
# All valid layers (included: "non-drawable"-layers):
laye
Hello Uwe,
I managed to install and run PCRaster on Windows in the past by
following the YouTube-Video from Hans van der Kwast:
https://www.youtube.com/watch?v=pja_EX0tVZA&list=PLeuKJkIxCDj2xbV45C45wz3N89FvmTuSu
It describes the PCRaster-installation with the *same OSGeo4W-Installer
as used
Hi Simon,
Excel tables don't need to be saved as delimited text, they can be
imported direct to QGis, f.e. with drag&drop.
Calculated contents in the spreadsheets are no problem, below my test
with a simple table:
(note: screenshot from LibreOffice, I hope there is no difference using
exc
Hi Julierme,
I think Your problem is, that You try to create a new application with
"app = QApplication(sys.argv)" inside a running QGis, which already is a
running Qt-application.
Simplified code should perform without crash:
import sys
from PyQt5.QtCore import (QSize,Qt)
from PyQt5.QtWidge
hods are working properly like
the self.setFixedSize(QSize(400,300)). I am sending a window
screenshot in attachment.
I appreciated your time and help.
Kind regards
Julierme
On Wed, Aug 16, 2023 at 4:07 PM Ludwig Kniprath via QGIS-User
wrote:
Hi Julierme,
I think Your problem is
Hi Daniela,
possible solution:
1. run the "Union" algorithm that splits the input polygons
2. add a new integer-column to the "Union"-result-layer f. e. "num_overlays"
3. optionally an additional column with type "integer list" or "string",
if You want to see afterwards, which features inters
Oh my, QGis without GIS functionalities...
Not with on-board resources, I'm afraid, but some thoughts:
In QGis/PyQGis (script/plugin):
- connect the QgsVectorLayer::editingStarted-signal to
disable/remove/hide the vertex-tool-icon and the "Advanced Digitizing
Toolbar"
- connect the QgsVec
Hi Patrick,
what about
iface.mapCanvas().setExtent(layer.extent())
iface.mapCanvas().refresh()
or
iface.setActiveLayer(layer)
iface.zoomToActiveLayer()
hth
Ludwig
Am 18.11.23 um 09:32 schrieb Patrick Dunford via QGIS-User:
Good day to all
I want to call zoomToLayers in a pyqgis script to
Hi Asim,
I'm surprised that previous QGis versions should have returned three
layers "Gasunie 2, Gasunie Z-509-05 and Wattinfra Kabelverbinding",
because the legend image shows a single vector layer "Overzicht
entities" with three classes, not three separate layers.
According to https://api.
Hi Gael,
I'm using QGis on Linux Mint, an Ubuntu fork, with no problems, so just
some notes.
- Did you follow
https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu?
- Did you run "sudo apt update" before "sudo apt install"?
- There seems to be an older installation, You cou
Hi Bernhard, what about
iface.mapCanvas().extentsChanged.connect(lambda: print("the extent has
changed!!!"))
Or something more usefull like
def extent_has_changed_slot():
print(iface.mapCanvas().extent())
iface.mapCanvas().extentsChanged.connect(extent_has_changed_slot)
Btw, the *si
Hi Pat,
Step 1 (already done): import csv as "Delimited Text Layer". Since there
are no coordinates this results in a geometry-less layer.
Step 2: export and load the just imported csv as vector-layer
(GeoPackage, Shape), geometry-type "Point", desired projection. This
results in a Point-Lay
Hi Pat,
Step 1 (already done): import csv as "Delimited Text Layer". Since there
are no coordinates this results in a geometry-less layer.
Step 2: export and load the just imported csv as vector-layer
(GeoPackage, Shape), geometry-type "Point", desired projection. This
results in a Point-La
Hi, 6 digit x-values without "32" is correct for EPG:25832, which has no
false easting, see https://epsg.io/25832.
You should use EPSG:4647 (german variant) with easting of 3250 thus
getting 8-digit x-values starting with the zone prefix "32", see
https://epsg.io/4647.
hth
Ludwig
Am 05
Hello Dennis,
I don't know I understood your problem, but a GeoPackage is internally a
SQlite-Database with SpataLite-extension and without native field-types
GUID or UUID.
The SpatiaLite-provided function CreateUUID "returns a Version 4
(random) UUID (Universally unique identifier)"
(http
Hello Denis,
I didn't know about QgsDockwidget yet, but looking on
https://api.qgis.org/api/classQgsDockWidget.html it's a derived
QDockwidget.
Image taken from https://doc.qt.io/qt-5/qdockwidget.html:
https://doc.qt.io/qt-5/images/mainwindow-docks.png
A docked QDockwidget uses automaticall
Hello Peter,
everything that users do in QGis can be done by Python scripts,
including your steps listed below.
There are some difficulties for the desired "one step" solution, f. e.
the name of the file-based layer must be converted in a valid and unique
postgis table-name, the fields of th
Hi Inka,
there are multiple ways to import X-Y-data as vector-layer:
1. "Delimited Text Layer" (Layer > Add Layer > Add Delimited Text Layer)
simple usage, but only for CSV-files, see
https://docs.qgis.org/3.40/en/docs/user_manual/managing_data_source/opening_data.html#importing-a-delimited-te
t Obstacle Settings:
Regards
Ludwig
Am 21.07.25 um 12:09 schrieb Ludwig Kniprath via QGIS-User:
Hi Ann-Christin,
if their number is not too high, you can use the label-toolbar to hide
some of the unwanted labels manually:
Note:
QGis uses an "AuxiliaryLayer" attached to the
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