thbaumann

settings=QSettings()
test=settings.allKeys()

errorcounter=0
for i in test:
    if(u'Projections/EPSG:25832/EPSG:31467_coordinateOp' in i):
        if settings.value(i)!=u'+proj=pipeline +step +inv +proj=utm +zone=32 +ellps=GRS80 +step +inv +proj=hgridshift +grids=BWTA2017.gsb +step +proj=tmerc +lat_0=0 +lon_0=9 +k=1 +x_0=3500000 +y_0=0 +ellps=bessel':
            errorcounter+=1 
        else:
            settings.setValue('Projections/EPSG:25832/EPSG:31467_coordinateOp',u'+proj=pipeline +step +inv +proj=utm +zone=32 +ellps=GRS80 +step +inv +proj=hgridshift +grids=BWTA2017.gsb +step +proj=tmerc +lat_0=0 +lon_0=9 +k=1 +x_0=3500000 +y_0=0 +ellps=bessel')

thbaumann

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# vim: ft=python ts=4 sw=4 expandtab
#
# Copyright (c) 2013 Reed Kraft-Murphy <[email protected]>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

thbaumann

layer = QgsProject.instance().mapLayer('[% @layer_id %]')

from qgis.core import Qgis, QgsVectorFileWriter
exportpath="D:/loeschen/test.gpx"
error, error_string = QgsVectorFileWriter.writeAsVectorFormat( layer,
    exportpath, 
    "UTF-8",
    layer.crs(),
    "GPX",  
    onlySelected=True)

thbaumann

thbaumann

from qgis.core import *
from qgis.gui import *

@qgsfunction(args='auto', group='Custom')
def eindeutige_legende1( layername, feature, parent,context):

    try:
        project = QgsProject.instance() 
        ausgabe=None
        legendenlayer = QgsExpressionContextUtils.projectScope(project).variable('eindeutig')

thbaumann

from qgis.core import *
from qgis.gui import *
import os.path
@qgsfunction(args='auto', group='Custom',usesgeometry=False)
def layername_aus_pfad(current_path, feature, parent):
    """
    Layername aus dem Pfad ermitteln
    current_path: an die Funktion uebergebener pfad, wie z.B. layer_by_path('D:\loeschen\gemarkungen.shp')
    """
    path=os.path.normpath(current_path)

thbaumann

Kategorisierter Stil per PyQGIS: größtenteils basierend auf: https://gis.stackexchange.com/a/382742/67477 
      
# Code für die QGIS Konsole:

styling_layer = iface.activeLayer()   # Hinweis: im Plugin self.iface.activeLayer()

spalten_name = 'DRUCKSTUFE'
rampen_name = 'Greens'

field_index = styling_layer.fields().indexFromName(spalten_name)

thbaumann

# for testing in QGIS console
style_name = 'Druckstufen'
layer=iface.activeLayer()
stylemanager = layer.styleManager()
current_style = stylemanager.currentStyle()
#print(curr_style)
# stil nur wechseln wenn nicht schon aktuell eingestellt
if style_name != current_style:
  stylemanager.setCurrentStyle(style_name)

thbaumann

1. Install ptvsd using the same Python interpreter Qgis uses. E.g. on Windows:

C:\OSGeo4W64\apps\Python37\python.exe -m pip install ptvsd==4.3.2 

2. Add a debug configuration to launch.json:

{
    "name": "Python: Remote Attach",

thbaumann

A windows version inspired by this lovely gist: https://gist.github.com/AsgerPetersen/9ea79ae4139f4977c31dd6ede2297f90

Debugging QGIS 3.x python plugins on Windows 10 using VS Code

Plugin

In QGIS install the plugin debugvs.

Python dependencies

The debugvs plugin needs the python module ptvsd to function. This module is not installed by default.