underdarkGIS’s Twitter Archive

I've been toying around with the idea of a PyQGIS intro for non-programmers without all the boring parts of vanilla Python tutorials. Not sure how far this will go, but it's a start: anitagraser.com/projects/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/
Permalink On twitter.com ♻️ 201 Retweets ❤️ 717 Favorites 2018 May 31 Mood -3 🙁

…in reply to @underdarkGIS
Thank you all for your feedback and encouragement! I've updated the existing chapters and added a new one anitagraser.com/projects/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/
Permalink On twitter.com ♻️ 9 Retweets ❤️ 56 Favorites 2018 Jun 1 Mood +4 🙂

…in reply to @underdarkGIS
#PyQGIS101 vector styling: a starry night?! anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis-101-styling-vector-layers/
Permalink On twitter.com ♻️ 3 Retweets ❤️ 33 Favorites 2018 Jun 5 Mood 0

…in reply to @underdarkGIS
Interesting to see requests for a motivation section that justifies why learning #python is worthwhile. I thought we were beyond that point. #QGIS #gistribe
Permalink On twitter.com ♻️ 4 Retweets ❤️ 20 Favorites 2018 Jun 16 Mood +3 🙂

…in reply to @underdarkGIS
Been waiting for a #PyQGIS101 raster example? Here it is anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis-101-loading-a-raster-layer/
Permalink On twitter.com ♻️ 5 Retweets ❤️ 21 Favorites 2018 Jun 21 Mood 0

…in reply to @underdarkGIS
The raster chapter also includes the first if statement example. Next up: probably how to call a Processing tool
Permalink On twitter.com ❤️ 8 Favorites 2018 Jun 28 Mood 0

…in reply to @underdarkGIS
Turns out using Processing tools in #PyQGIS requires basic Python dictionary knowledge. Another building block down anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis-101-running-processing-tools/
Permalink On twitter.com ♻️ 11 Retweets ❤️ 38 Favorites 2018 Jul 1 Mood -1 🙁

…in reply to @underdarkGIS
Learn how to export maps to PDF using #Python in the latest example of #PyQGIS101 anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis-101-exporting-layouts/ #QGIS
Permalink On twitter.com ♻️ 16 Retweets ❤️ 71 Favorites 2018 Sep 16 Mood 0

…in reply to @underdarkGIS
This is the first example that touches on oop inheritance. Know a good resource explaining the concept, ideally with python examples? Let me know! #pyqgis101
Permalink On twitter.com 2018 Sep 18 Mood +3 🙂

…in reply to @underdarkGIS
Realized I had comments disabled on the last couple of #PyQGIS101 examples. That wasn't on purpose.
Permalink On twitter.com 2018 Nov 3 Mood 0

…in reply to @underdarkGIS
New in: creating & modifying #QGIS vector layers using #Python: anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis101-creating-editing-a-new-vector-layer/ #PyQGIS101
Permalink On twitter.com ♻️ 16 Retweets ❤️ 45 Favorites 2018 Nov 6 Mood 0

…in reply to @underdarkGIS
Due to popular demand: chaining #QGIS Processing tools to create more complex workflows in #Python anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis101-chaining-processing-tools/ #PyQGIS101
Permalink On twitter.com ♻️ 7 Retweets ❤️ 31 Favorites 2019 Jan 3 Mood +2 🙂

…in reply to @underdarkGIS
New #PyQGIS101 post: renaming and removing project layers anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis-101-managing-project-layers/ #GISChat #QGIS
Permalink On twitter.com ♻️ 9 Retweets ❤️ 25 Favorites 2019 Feb 19 Mood 0

…in reply to @underdarkGIS
New in: @underdarkGIS/1129838611891986432 #PyQGIS101
Permalink On twitter.com ♻️ 4 Retweets ❤️ 8 Favorites 2019 May 18 Mood 0

…in reply to @underdarkGIS
Next up in #PyQGIS101 will be aggregate expressions
Permalink On twitter.com ❤️ 4 Favorites 2019 May 20 Mood 0

…in reply to @underdarkGIS
#PyQGIS101 part 12 with newly integrated instructions for aggregate expressions: anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis-101-using-expressions-to-compute-new-field-values/ also includes improved information about expression scopes (kudos to @nyalldawson for helping with the implementation details!)
Permalink On twitter.com ♻️ 8 Retweets ❤️ 20 Favorites 2019 May 21 Mood +7 🙂

…in reply to @underdarkGIS
@nyalldawson It's finally here: The first #PyQGIS101 tutorial for Processing scripts! anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis-101-writing-a-processing-script/ (It includes #QGIS 3.4 support so it's a bit verbose but I didn't want to leave LTR users behind.)
Permalink On twitter.com ♻️ 19 Retweets ❤️ 63 Favorites 2019 Jul 27 Mood +2 🙂

…in reply to @underdarkGIS
I've cleaned it up a bit more. The resulting minimum working Processing script is now 57 lines long (while using line breaks generously)
Permalink On twitter.com ❤️ 5 Favorites 2019 Jul 28 Mood +2 🙂

…in reply to @underdarkGIS
Jumping right into Processing scripts skipped a couple of important #PyQGIS101 topics. Therefore, the latest tutorial discusses writing #Python functions and how they can make your code reusable: anitagraser.com/pyqgis-101-introduction-to-qgis-python-programming-for-non-programmers/pyqgis-101-creating-functions-to-load-geopackage-layers/ #GISChat
On twitter.com ♻️ 7 Retweets ❤️ 16 Favorites 2019 Aug 10 Mood +2 🙂