Publications by tomaztsql
Advent of 2021, Day 24 – Data Visualisation with Spark
Series of Apache Spark posts: Dec 01: What is Apache SparkDec 02: Installing Apache SparkDec 03: Getting around CLI and WEB UI in Apache SparkDec 04: Spark Architecture – Local and cluster modeDec 05: Setting up Spark ClusterDec 06: Setting up IDEDec 07: Starting Spark with R and PythonDec 08: Creating RDD filesDec 09: RDD Operatio...
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Advent of 2021, Day 25 – Spark literature, documentation, courses and books
Series of Apache Spark posts: Dec 01: What is Apache SparkDec 02: Installing Apache SparkDec 03: Getting around CLI and WEB UI in Apache SparkDec 04: Spark Architecture – Local and cluster modeDec 05: Setting up Spark ClusterDec 06: Setting up IDEDec 07: Starting Spark with R and PythonDec 08: Creating RDD filesDec 09: RDD Operatio...
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Little useless-useful R functions – Creating tiny Fireworks with R
New Year’s eve is almost here and what best way to celebrate with fireworks. Snap, pop, crack, boom. This is the most peaceful, animal friendly, harmless, eco, children friendly, no-fire-needed, educative and nifty fireworks. To get the fireworks, fire up the following R function. ########################################## # # Tiny firework...
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R Studio with great new feature – multiple code panes
With October 2021 version of R Studio (2021.09.1 Preview) a great and – in my personal opinion – long awaited features is now available – multi windows or multi panes for viewing the R code. Two code/source windows (panes) side by side On R studio home page, make sure to download the version 2021.09 Preview (as of writing of this blogpost, ...
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Little useless-useful R functions – Mastermind board game for R
Playing a simple guessing game with R. It’s called Mastermind game! This game was originally created for two people, but R version will be for single-player mode, when an R developer or R data scientists need a break. The gameplay is simple and so are the rules. The board contains 10 rows (or more) with possibilities of four colours and code pe...
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Little useless-useful R functions – Making boxplot from a picture
Generating violin boxplots from image. Yes, why not. We create a raster image from a picture and calculating the ratio of the pixels on the scale of grayscale. The more the darker colour is represented in the pixels, the bigger the value. And this value is converted into the vector of values. And each vector is represneted as a violin boxplot. ...
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SQL vs. NoSQL for Data Science
Data come in variety of form, at different pace, and at different volume. And if all three criteria define the difference between SQL and NoSQL and there, all three are still irrelevant for data science. My theorem is, that no matter what shape, size, frequeny, value and trustworthiness, SQL type of presenting the data is still the number one pla...
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