spatialthoughts/qgis-tutorials

Source files for sphinx-based website

Ujaval Gandhi

I am the founder of Spatial Thoughts and author of several open-source learning resources. The technologies I primarily work with are QGIS, Python, GDAL and Google Earth Engine. I am strong believer in open-source, open-data and open-learning materials.

You can check out my work through the links below.

• QGIS Tutorials and Tips: Available in 10+ languages and used by 1M+ users every year. Covers all topics suitable from beginner to advanced users with step-by-step instructions. Built using RST/Sphinx/Github Pages. [view source code]
• SpatialThoughts OpenCourseWare: Comprehensive and structured course materials for advanced topics. Shared under open-license suitable for self-learning and non-commercial use. Built using Markdown/R Studio/Github Pages. [view source code]
• Spatial Thoughts Blog: Regularly updated blog covering events and technical topics related to open-source geospatial technologies such as QGIS, Earth Engine, GDAL, Mapshaper and more.
• Spatial Thoughts YouTube Channel: Tutorials, lectures, guided projects and more content in easy to understand videos.

Connect with me

Popular Posts

Google Earth Engine

• Extracting Time Series using Google Earth Engine
• Calculating Area in Google Earth Engine
• Aggregating Gridded Population Data in Google Earth Engine
• Temporal Gap-Filling with Linear Interpolation in GEE
• Working with QA Bands and Bitmasks in Google Earth Engine

QGIS

• Summary Aggregate and Spatial Filters in QGIS
• K-Means Clustering with Equal Sized Clusters in QGIS
• Spatial Homogeneity Testing of Raingauge Data with Advanced QGIS Expressions
• Fuzzy Table Joins in QGIS
• Find Neighbor Polygons using Summary Aggregate Function in QGIS

Python

• Fast Point-in-Polygon Analysis with GeoPandas and Uber’s H3 Spatial Index
• Approximating Geodesic Buffers with PyQGIS
• Snapping GPS tracks to Roads using PyQGIS and OSRM

GDAL

• Convert between Orthometric and Ellipsoidal Elevations using GDAL
• Fixing Rasters with Missing Data using QGIS, GDAL and Python
• Reclassifying Rasters using gdal_calc

qgis-tutorials's Issues

Creating a Colorized River Basin Map (QGIS3) — QGIS Tutorials and Tips

Creating a Colorized River Basin Map (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/colorized_river_basin_map.html

Big file in .git

Hello,

When I ran git clone for this repo takes a lot time to download all files. This is partly because there are files that help in the tutorials but there is a particular file of ~500 MB in qgis-tutorials/.git/objects/pack/. Did you know the existence of this file? I do not know much git but searching it seems this file contains info about other large files.

It would be good if you can "remove" this file only if is not very relevant. Unfortunately I tried some solutions found in Stackoverflow but they did not work.

Outdated link

Ujaval,

seems that US Census Bureau has changed his links.

Translating Sampling raster data (QGIS3) the link
https://www2.census.gov/geo/gazetteer/2018_Gazetteer/2018_Gaz_ua_national.zip
did no longer work.

I found the new link for the file 2018_Gaz_ua_national at
https://www.census.gov/geographies/reference-files/2018/geo/gazetter-file.html

Greetings,
Dick

Calculating Street Intersection Density (QGIS3) — QGIS Tutorials and Tips

Calculating Street Intersection Density (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/calculating_intersection_density.html

Styling Contours in 3D (QGIS3) — QGIS Tutorials and Tips

Styling Contours in 3D (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/contour_3d_styling.html

Writing Python Scripts for Processing Framework (QGIS3) — QGIS Tutorials and Tips

Writing Python Scripts for Processing Framework (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/processing_python_scripts.html

Working with attributes: 404 not found on data file

The following link now has a 404 error. Alternative link still works.

qgis-tutorials/source/docs/working_with_attributes.rst

Line 31 in 13696e4

<http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/cultural/ne_10m_populated_places_simple.zip>`_

Working with Attributes (QGIS3) — QGIS Tutorials and Tips

Working with Attributes (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/working_with_attributes.html

Multi Criteria Overlay Analysis (QGIS3) — QGIS Tutorials and Tips

Multi Criteria Overlay Analysis (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/multi_criteria_overlay.html

Basic Vector Styling (QGIS3) — QGIS Tutorials and Tips

Basic Vector Styling (QGIS3) — QGIS Tutorials and Tips

http://www.qgistutorials.com/en/docs/3/basic_vector_styling.html

Animating Time Series Data (QGIS3) — QGIS Tutorials and Tips

Animating Time Series Data (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/animating_time_series.html

Handling Invalid Geometries (QGIS3) — QGIS Tutorials and Tips

Handling Invalid Geometries (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/handling_invalid_geometries.html

Interpolating Point Data (QGIS3) — QGIS Tutorials and Tips

Interpolating Point Data (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/interpolating_point_data.html

Update earthquake file for nearest neighbor analysis tutorial

https://www.qgistutorials.com/en/docs/3/nearest_neighbor_analysis.html

Typo on handling_invalid_geometries.html

The following contains a misspelled word:

There is a graph-theory version of this thorem called Five color theorem

Should be "theorem"

I'll try to submit a fix myself but wanted to make sure this was documented.

Basic Raster Styling and Analysis (QGIS3) — QGIS Tutorials and Tips

Basic Raster Styling and Analysis (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/raster_styling_and_analysis.html

Web Mapping with QGIS2Web (QGIS3) — QGIS Tutorials and Tips

Web Mapping with QGIS2Web (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/web_mapping_with_qgis2web.html

Wrong expression in image 7.png

Ujaval,

whilst translating I noticed that the expression in image 7.png in Working with attributes (QGIS3)
is missing a "0".

Expression in the image is: "pop_max" > 100000 (five zero's) but should probably be "pop_max > 1000000 (six zero's)

Also effects some subsequent images with the selected points which should not be 3087 but 500

Greetings
Dick

Update all download links to https://

In all the tutorials, we need to update download links to data to https://

For example, in source/docs/3/advanced_georeferencing.rst

newyorkcity-washingtonsquarepark.jpg <http://www.qgistutorials.com/downloads/newyorkcity-washingtonsquarepark.jpg>_

should become

newyorkcity-washingtonsquarepark.jpg <https://www.qgistutorials.com/downloads/newyorkcity-washingtonsquarepark.jpg>_

error when trying to install requierments

Hi

first of all thanks so much for these great tutorials!

im getting an error both on debian and arch linux when i try to to install requierments

qgis-tutorials ↳ pip install -r requirements.txt master
Downloading/unpacking sphinx (from -r requirements.txt (line 1))
Downloading Sphinx-1.2.2-py27-none-any.whl (1.1MB): 1.1MB downloaded
Downloading/unpacking sphinx-intl (from -r requirements.txt (line 2))
Downloading sphinx_intl-0.9.5-py2.py3-none-any.whl
Downloading/unpacking shpinx-bootstrap-theme (from -r requirements.txt (line 3))
Could not find any downloads that satisfy the requirement shpinx-bootstrap-theme (from -r requirements.txt (line 3))
Some externally hosted files were ignored (use --allow-external shpinx-bootstrap-theme to allow).
Cleaning up...
No distributions at all found for shpinx-bootstrap-theme (from -r requirements.txt (line 3))
Storing debug log for failure in /home/zeltak/.pip/pip.log

any idea how to solve this

best

Z

Building a Python Plugin (QGIS3) — QGIS Tutorials and Tips

Building a Python Plugin (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/building_a_python_plugin.html

Making a Map (QGIS3) — QGIS Tutorials and Tips

Making a Map (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/making_a_map.html

Working with WMS Data (QGIS3) — QGIS Tutorials and Tips

Working with WMS Data (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/working_with_wms.html

Automating Map Creation with Print Layout Atlas (QGIS3) — QGIS Tutorials and Tips

Automating Map Creation with Print Layout Atlas (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/automating_map_creation.html

Service Area Analysis using Openrouteservice (QGIS3) — QGIS Tutorials and Tips

Service Area Analysis using Openrouteservice (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/service_area_analysis.html

Add missing screenshot for Georeferencing Topo Sheets and Scanned Maps

https://www.qgistutorials.com/en/docs/3/georeferencing_basics.html

Add an overlay text for 'Select CRS' button in Step 9.

Feedback from https://www.qgistutorials.com/en/docs/3/georeferencing_basics.html#comment-5617670103

Basic Network Visualization and Routing (QGIS3) — QGIS Tutorials and Tips

Basic Network Visualization and Routing (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/basic_network_analysis.html

Dichtstbijzijnde faciliteit zoeken met Origin-Destination Matrix (QGIS3) — QGIS Tutorials and Tips

Dichtstbijzijnde faciliteit zoeken met Origin-Destination Matrix (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/nl/docs/3/origin_destination_matrix.html

Missing string in Transifex for Calculating raster area

String 29 from the website is missing in the doc for Transifex to translate

Batch Processing using Processing Framework (QGIS3) — QGIS Tutorials and Tips

Batch Processing using Processing Framework (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/batch_processing.html

How can i pass external wms url and layer name dynamically from user interface and it has to overlay on basemap

This is may present code

wms layer overlay <script> function openDialog(e) { collapseMenu(); closeDialog(); document.getElementById(e.getAttribute('data-dialog')).style.display = 'initial'; } function closeDialog() { document.getElementById('new_wms').style.display = 'none'; document.getElementById('new_wfs').style.display = 'none'; document.getElementById('new_vector').style.display = 'none'; document.getElementById('open_image').style.display = 'none'; document.getElementById('open_vector').style.display = 'none'; } function collapseMenu() { document.getElementById('menu_new_content').style.display = 'none'; document.getElementById('menu_open_content').style.display = 'none'; } function expandMenu(evt) { evt.stopPropagation(); if (evt.target.id) { var menuContent = evt.target.children[0]; if (menuContent.style.display === 'none') { menuContent.style.display = 'block'; for (var i=0;i this.maxWidth) { this.eTop.innerHTML = +parseFloat(this.eTop.innerHTML).toFixed(5)/2 + ' ' + this.topOutUnits; this.eTop.style.width = Math.round(parseInt(this.eTop.style.width)/2) + 'px'; this.fixWidth(); } }, maxWidth: 150 }) ]); map.events.register('moveend', map.getControlsByClass('OpenLayers.Control.ScaleLine')[0], map.getControlsByClass('OpenLayers.Control.ScaleLine')[0].fixWidth); </script>

New WMS layer

Server URL:
Layer name:
Display name:
Transparency:

New

WMS Layer

WFS Layer

Vector Layer

Automating Complex Workflows using Processing Modeler (QGIS3) — QGIS Tutorials and Tips

Automating Complex Workflows using Processing Modeler (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/processing_graphical_modeler.html

Travel Time Analysis with Uber Movement (QGIS3) — QGIS Tutorials and Tips

Travel Time Analysis with Uber Movement (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/travel_time_analysis.html

Creating a Landuse Map (QGIS3) — QGIS Tutorials and Tips

Creating a Landuse Map (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/creating_landuse_map.html

Locating Nearest Facility with Origin-Destination Matrix (QGIS3) — QGIS Tutorials and Tips

Locating Nearest Facility with Origin-Destination Matrix (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/origin_destination_matrix.html

Estilos y Análisis Básicos Ráster (QGIS3) — QGIS Tutorials and Tips

Estilos y Análisis Básicos Ráster (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/es/docs/3/raster_styling_and_analysis.html

Creating a Block World Map (QGIS3) — QGIS Tutorials and Tips

Creating a Block World Map (QGIS3) — QGIS Tutorials and Tips

https://www.qgistutorials.com/en/docs/3/block_world_styling.html

Update the source of Significant Earthquale CSV

Locate the updated URL and change it at https://www.qgistutorials.com/en/docs/3/importing_spreadsheets_csv.html

If needed, update the steps.