Yesterday, I was working on the ward level parks map of Chennai I had to join a CSV data layer with the boundary polygon layer, but there was one issue while my CSV file has the ward numbers as integers (1,2,3..etc), the polygon layer had them as strings (Ward 1, Ward 2, Ward 3 …etc.,)…… Continue reading QGIS – Creating new column from existing using Python
I published the Tamilnadu district wise literacy map some days ago and @tshrinivasan asked if I can write a blog on how to do it, and here it is now. https://twitter.com/tecoholic/status/1078953714642182144 What are we going to do? We are going to create India’s State Wise Literacy Map. It will be a Choropleth map ℹ️ just like the…… Continue reading India Literacy Map with a How-To
On 16th October 2011, I have uploaded a map of Tamilnadu District wise Literacy levels to Wikipedia. It was used in the article about Tamilnadu for a long time, then moved to the Education in Tamilnadu article when a separate article was created. But the map was not in line with the Wikipedia Map Conventions. So, took…… Continue reading Updating the Wikipedia Tamilnadu Literacy Map
Chetpet Lake has been developed into a nice waterfront park for walking a few years back. It is maintained diligently with water level balanced between the two parts of the lake depending on the availability, grass moved, plants cared for and the walkways washed off the bird droppings everyday morning. It opens for walkers as…… Continue reading A Map of the Chetpet Lake and Eco Park
Cyclone Gaja – this year’s natural disaster which has landed like a stab in the gut for Tamil Nadu. … Cyclone Gaja is a major disaster, and its economic impact in Tamil Nadu is comparable to that of the tsunami of 2004. – The Hindu After the disaster, the Tamil Nadu’s Chief Minister announced a…… Continue reading Gaja Relief & Disaster Management Numbers
When I moved the site from Jekyll to WordPress, I was asked to create a site icon by WordPress. I was trying to play around with the letter from “t” from my screen name “tecoholic” in a couple of Vector editors using different fonts, handrawn symbols …etc., and finally landed on what I know best.…… Continue reading Creating an Icon for my blog
Sorting is simplified in Python with sorted(). You can even sort with complex rules.