The recent crypto bull market got me interested in chartist approaches to trading strategies. I’ve always wanted to use Deepnote‘s notebook solution, so I decided to combine my newfound hobby of algorithmic trading with my new tool craving. I started using Backtrader in Deepnote, but that produced some plotting issues.…
When I got my new company computer, out service desk installed R in a network folder, which made installing and loading R libraries extremely slow. That’s why I reinstalled R and needed to set my library directory explicitly, so that R doesn’t look in the network folder with every package…
In this blog post, we’ll use media queries particular user (device) properties using Google Tag Manager and Google Analytics 4. Some JavaScript knowledge is not a luxury. Using media queries, developers can personalize their app or website based on device and personal preferences by the user. Using the matchMedia method…
If you’re new to VirtualBox, some things might be confusing. When you run into the following error, it means you haven’t installed an Operating System in your virtual machine. But, didn’t I select an OS when creating the image? Do you see the word “intend” in the description? That means…
Calculating the number of days between two dates in R is as simple as using + or -. However, if you only want to count the business days (e.g. in a B2B context), you’ll have to be a little more creative. Let’s just do that. Count business days in R…
In this blog post we’ll tackle an aesthetic aspect in R & ggplot2 — namely, displaying your the labels on your axis as millions or thousands. Assume, you have a data set with a column that has numbers ranging into the millions. To emulate this, I loaded the mtcars dataset…
Recently, I’ve been working with Pandas DataFrames that had a DateTime as the index. When I tried reindexing the DataFrame (using the reindex method), I bumped into an error. Let’s find out what causes it and how to solve it. The Python error I’m talking about is: A “duplicate axis”?…
In this blog post I discuss how you can load compressed CSV files, such as .zip and .tar.gz. Nowadays, many packages support it and we’ll go over the different methods. When data sets are ping-ponged across an organization, in order to limit network and storage usage, they often come in…
In this blog post, you’ll learn how to add confidence intervals to a line plot in R in the popular ggplot2 visualization package, part of the tidyverse. First, let’s create some random data to work with. For demonstrational purposes, I’ve created two time series from two normally-distributed random variables. These…
The following error might occur when you would like to pass the contents of a file to an AWS CLI command. Amazon web services has very strict rules regarding referring to file contents. When you refer to the content of a file you need to use the file:// protocol. The…