Thursday, April 30, 2020

Covid-19 infections by county, rate of increase

So this image shows rate of increase of the number of cases on a daily basis. It's not as smooth as I would like.

Wednesday, April 29, 2020

Generating sequentially increasing values in C++

Say you need to generate a sequence, in C++, simply consisting of the first so many integers, like, 1,2,3,4,5.

With a little programming experience, you can come up with a dozen different ways to do this, but here's an obscure one:

std::list<int> l(5);
std::iota(l.begin(), l.end(), 1);

According to CppReference, the function is named after the integer function ⍳ from the programming language APL.

The more you know.

Saturday, April 11, 2020

Command Line tips from CLI Magic

Tips for working with the command line from CLI magic. I like this one to show all listening TCP/UDP ports for the current user:

$ lsof -Pan -i tcp -i udp

Wednesday, April 01, 2020

Covid-19 infections by county, over time

This is a visualization choropleth I put together of Covid-19 infections for each county over time. It's based on the NY Times data set and I built the images in Python based off a very good, if ancient, tutorial I found at FlowingData.

Edit: Updated through Apr. 13 data, and also made the original larger. Not sure if that matters for this web page or not.

This image is licensed under the Creative Commons Attribution-NonCommercial 4.0 International license. I would appreciate attribution if you care to use it!