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Ujaval Gandhi
3,505 followers -
QGIS, Python, OpenDataKit. Passionate about teaching and open source software. Tech Lead/Manager for the aerial imagery team at Google.
QGIS, Python, OpenDataKit. Passionate about teaching and open source software. Tech Lead/Manager for the aerial imagery team at Google.

3,505 followers
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I will be in Hyderabad for FOSS4G Asia this week and will be teaching a workshop on authoring web maps using QGIS. Still a few spots left for registration.

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Great book! I bought it and had a quick read. Learnt so much. Great job +Anita Graser and +Gretchen Peterson

If you always struggle to create aesthetically pleasing maps like I do - this book will give you the skills and ideas to make the most out of QGIS's design features!

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GIS task for the day: Join a point shapefile with a table using a common field, add columns for X and Y coordinates and export to CSV. I had to process multiple such files with >1M points each.

QGIS - 3 manual steps, a total of 30 mins for each file. Create a model and run a batch job.
Mapshaper - 1 command, 3 mins each! Write a 1 line shell script and you are done...

If you haven't used mapshaper yet, time to give it a spin
http://www.spatialthoughts.com/blog/gis/mapshaper-command-line/
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Tip: Want to select spatially random polygons in #QGIS? Use this method instead of the 'Random Selection' tool (which uses feature ids instead of spatial distribution for selection)
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India in Space: Year End Review of ISRO's Achievements in 2015

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Catching up on FOSS4G talks. This one is a brilliant and modern approach to orthorectification enabled by open-source libraries such as OpenCV, PROJ4, GDAL etc. and open data such as Landsat and OSM.

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If you ever wondered about 'null island' and what it looks like in the real world.

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Isro launches a book on the history on Indian Space Program - "From Fishing Hamlet to Red Planet". An interesting collection of essays from multiple scientists. Get it as a free epub download from ISRO. #space
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