https://krishanv.com/R, C++, Clojure and web developmentMon, 27 Jul 2026 10:34:11 +0200clj-rsshttps://krishanv.com/posts-output/armadillo/https://krishanv.com/posts-output/armadillo/Primer on Compressed Sparse Column MatricesFirst, I would recommend reading NVIDIA's post on it. You need 3 elements.Wed, 12 Jun 2024 00:00:00 +0200https://krishanv.com/posts-output/cpp-with-r/https://krishanv.com/posts-output/cpp-with-r/Recently, I had to make use of the UUIDV5 implementation that came standard with Boost in an R project. Rather than implementing the UUID V5 hashing algorithm in R, I went with Rcpp to call the UUIDV5 function from boost.Including Boost Header FilesFri, 12 Jan 2024 00:00:00 +0100https://krishanv.com/posts-output/choropleth/https://krishanv.com/posts-output/choropleth/I will be building upon this example which I found too bare bones. It was also in a script tag for you to glue into a HTML document, who even does that.Here is how I did it with React and it is zoomable and toggles opacity upon a mouse event. A cheeky bonus; a tooltip.Wed, 16 Aug 2023 00:00:00 +0200https://krishanv.com/posts-output/filter-notin-list-R/https://krishanv.com/posts-output/filter-notin-list-R/I am always finding myself wanting to see the difference between two named lists or vectors.Say you want to find parameters in list1 that are not in list2.Fri, 03 Mar 2023 00:00:00 +0100https://krishanv.com/posts-output/makevars/https://krishanv.com/posts-output/makevars/Getting OpenMP working for your R packages on MacOSWed, 09 Nov 2022 00:00:00 +0100https://krishanv.com/posts-output/install-gmp/https://krishanv.com/posts-output/install-gmp/All kinds of errors installing packages on M1I personally found this entry useful in figuring out the build errors I was facing. They were namely related to R looking for my system libraries in the wrong places. I do not entirely understanding the underlying mechanisms at play here but I will shut up and show code.Fri, 23 Sep 2022 00:00:00 +0200https://krishanv.com/posts-output/multiple-r-versions/https://krishanv.com/posts-output/multiple-r-versions/I've recently ran into the issue of handling multiple R-versions on my Mac. I would have to switch between version 3.6.3 and version 4.1. I am on the Macbook Pro 14 inch from 2021.Installing an old version of RThu, 19 May 2022 00:00:00 +0200https://krishanv.com/posts-output/first/https://krishanv.com/posts-output/first/JSONB Columns in PostGreSQLI am assuming you'd know what a JSONB column is in PostGres. For those new to Clojure and next.jdbc, when you query your JSONB column, you'll see something of this sort.:data #object[org.postgresql.util.PGobject 0x2a8a9ebf "{\"key\": \"value\"}"],Sat, 03 Apr 2021 00:00:00 +0200