Series of Apache Spark posts: Dec 01: What is Apache Spark Dec 02: Installing Apache Spark Dec 03: Getting around CLI and WEB UI in Apache Spark Before diving into IDE, let’s see what kind of architecture is available in Apache Spark. Architecture…Read more ›

Series of Apache Spark posts: Dec 01: What is Apache Spark Today, we will look into installing Apache Spark. Spark is cross-platform software and therefore, we will look into installing it on both Windows and MacOS. Windows Installing Apache Spark on…Read more ›

Apache Spark is an open-source unified analytics engine for large-scale data processing. It provides an interface for programming entire clusters with implicit data parallelism and fault tolerance. Originally it was developed at the Berkeley’s AMPLab, and later donated to the…Read more ›

Yes. Finally, the Voronoi diagrams with the use of x11() function. This diagram is presentation of a plane that is partitioned every time, a user clicks on the canvas of x11. This plane is partitioned into smaller regions that are…Read more ›

So you want to train your knowledge on irregular verbs or your child is learning all forms of the verbs or you are getting prepared for post-covid travel a crash-course of grammar would not hurt. Yes, this useless function will…Read more ›

It is all about measuring time using useless clocks. Script takes a system time and displays any given clock in a rather “static” way. You can choose between analog, small digital and big digital clock. And when playing with the…Read more ›

Progress bar showing the number of days until end of the year. Yes, only based on the days and not hour. And needless to say, the progress is soothing using ASCII charts. So the function is fair to say, simple…Read more ›

From the previous two blog posts: Creating REST API for reading data from Microsoft SQL Server in web browser Writing DAta to Microsoft SQL Server from web browser using REST API and node.js We have looked into the installation process…Read more ›

R language (as well as Python) as comprehensive languages helping not only data analysis and data science tasks make it pretty easy, but is also a multiple-purpose language. In this blog-post I will examine ways of getting data into SQL…Read more ›

This time around, since first half of the 2021 is behind us, we are making Calendar in R. This will be achieved with two useless functions. Function to draw a month (with optional parameter as current date) Running this function…Read more ›

How about some colours in line graph? Or even more wacky? Nevertheless, let’s create a function that generates some sample “mocked” data and draws a line chart: And run all together with three parameters: n – number of data points…Read more ›

Summer. Sunny weather. Vitamin D. And if you are missing vitamin Rain because you are growing a garden or simply want an inner cooling, hit this useless function to see, if there is a rain anywhere to be seen. Besides…Read more ›

Another useless function that could be found in many programming languages. For example typical Python sample, that everyone have encountered would be: Resulting in a string with: My Name is Tomaz and I write this post. So, let’s do something…Read more ›

Facets in ggplot2 are great for showing multiple plots on a single canvas. Assuming this usually covers many scenarios, there might be a case that you would want to save all the combinations of x and y variables in a…Read more ›

So here is a useless fact. There is no letter A in numbers – written as words – from 1 to 100. And of course, we wanted to put this into the test and check if it holds the water.…Read more ›

Writing useless strings has been a focus of this series, and L-Systems (Lindenmayer Systems) are no different. It is a set or a string of characters that is rewritten on each iteration, following a set of rules. Probably the most…Read more ›

Using pipe %__% or chaining commands is very intuitive for creating following set of commands for data preparation. Visualization library ggplot in this manner uses sign “+” (plus) to do all the chaining. What if we would have to replace…Read more ›

Gimmick not a poem, useless R code for your Valentine. Code for this heart shaped useless poem: And once you have the function persistent in your environment, just run: And for the poets, here the R version of the poem:…Read more ›