😇

Étienne Trimaille Gustry

😇

Developer of QuickOSM, mainly Python, OSM and QGIS

Gustry / gist:ab965a9db3e00e8ea8ac2f3896521280

Created May 2, 2021 04:55

QGIS from PyCharm

PYTHONUNBUFFERED=1;QGIS_PREFIX_PATH=/home/etienne/dev/app/qgis-master;PYTHONPATH=/usr/lib/python3/dist-packages/

Gustry / algorithm.py

Created April 22, 2021 10:06

Debug vector layer within Processing algo

	@staticmethod
	def debug_layer(context, layer: QgsMapLayer, name=None):
	from qgis.core import QgsProcessingContext
	if name:
	layer.setName(name)

	context.temporaryLayerStore().addMapLayer(layer)
	context.addLayerToLoadOnCompletion(
	layer.id(),
	QgsProcessingContext.LayerDetails(

Gustry / test.py

Created March 18, 2020 08:21

	import sys

	from qgis.core import QgsVectorLayer, QgsProject
	from qgis.testing import unittest, start_app

	start_app()


	class TestTest(unittest.TestCase):

Gustry / bash

Created September 9, 2019 08:47

Docker-compose virtualenv

	# Installer une version decente de virtualenv
	> pip3 install virtualenv virtualenvwrapper

	## A copier dans le .bashrc
	# export WORKON_HOME=~/.virtualenvs/
	# mkdir -p $WORKON_HOME
	# export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3
	# source "/usr/local/bin/virtualenvwrapper.sh"
	#
	# S'assurer d'avoir ~/bin dans le path

Gustry / gist:4ad773b443ab6992f0a41c70e4eaeea3

Last active April 10, 2019 20:50

	# coding:utf-8
	from qgis.PyQt.QtCore import QUrl
	from qgis.PyQt.QtNetwork import QNetworkRequest
	from qgis.core import QgsNetworkAccessManager

	url = 'http://lizmap.pn971.net/index.php/lizmap/service/?repository=portail&project=portail&SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetCapabilities'


	def urlCallFinished(reply):
	print(reply.readAll())

Gustry / gist:a538802f90ad8d1cc58d128b6ea128ab

Created December 11, 2018 19:08

raster tif

	https://gis.stackexchange.com/questions/104453/why-result-of-merge-of-multiple-raster-is-so-big

	for file in *.jp2; do
	[ -e "$file" ] \|\| continue
	gdal_translate -of GTiff ${file} -co COMPRESS=JPEG -co bigtiff=yes ${file}.tiff
	done


	gdal_merge.py -ot Byte -of GTiff -o OUTPUT_block.tif -init "255 255 255" -co tiled=yes -co bigtiff=yes -co compress=jpeg --optfile /tmp/processing_3fad9415054b4e8fa4f0630b609149d9/mergeInputFiles.txt

Gustry / query.sql

Last active July 25, 2018 19:42

SQL get layers without QGIS style

	DROP VIEW IF EXISTS liste_des_tables_sans_styles;
	CREATE VIEW liste_des_tables_sans_styles AS
	SELECT schemaname, tablename
	FROM pg_catalog.pg_tables
	WHERE schemaname NOT IN ('pg_catalog', 'public', 'information_schema')
	EXCEPT
	SELECT f_table_schema AS schemaname, f_table_name AS tablename FROM public.layer_styles;

	DROP VIEW IF EXISTS liste_des_tables;
	CREATE VIEW liste_des_tables AS

Gustry / gist:b6c5c78c6f25f1afcbbd6a15f59feb7a

Created May 23, 2018 14:25

GetPrint QGIS

	/usr/bin/Xvfb :99 -screen 0 1024x768x24 -ac +extension GLX +render -noreset

	In Nginx:
	fastcgi_param DISPLAY ":99";

Gustry / legend_tree.py

Created October 21, 2015 17:36

Explore the legend tree

	layer = iface.legendInterface().currentLayer ()

	root = QgsProject.instance().layerTreeRoot()

	# Find the layer and set the custom property
	layer_node = root.findLayer(layer.id())
	old_value = layer_node.customProperty("showFeatureCount")
	layer_node.setCustomProperty("showFeatureCount", True)
	layer_name = layer_node.layerName()