Some data visualisations can be perceived as something more than figurative representations of numerical or statistical analyses, and certain examples of infographics give us something more than simply visual information. Often it is the design that fascinates us, and even the idea it expresses. Sometimes it is also the objective…


Oscar Rojo

This is a simple demonstration of finding the shortest path between two nodes on a map

Abstract OpenStreetMap provides freely accessible and editable geographic data. The osmar package smoothly integrates the OpenStreetMap project into the R ecosystem. The osmar package provides infrastructure to access OpenStreetMap data from different…


Anscombe’s quartet comprises four data sets that have nearly identical simple descriptive statistics, yet have very different distributions and appear very different when graphed. Each dataset consists of eleven (x,y) points. They were constructed in 1973 by the statistician Francis Anscombe to demonstrate both the importance of graphing data before…


“You won’t go to bed without knowing something else” is a saying that refers to the idea that every day we learn something new.

This phrase highlights the nature of our lifelong learning, which is continuous and unstoppable, which increases day by day with small things: a new activity, information…


The R sqldf package allows us to execute SQL statements. The clauses, the expressions, the predicates,… are the salvation for many mediocre types such as the now-writer. sqldf is an indispensable module, even Falete’s boyfriend is able to program in SQL.

Photo by Zhang Kenny on Unsplash

Obviously I’m not going to teach you how to…


On July 19th “La Liga Santander” season 2019/2020 ended. It was, for obvious and extra-sporting reasons, the longest in the history of the competition. The first match was played on August 16, 2019, at San Mamés, with Athletic winning 1–0 over Barcelona thanks to Aritz Aduriz’s Chilean goal. …


A little bit of history

Abacus is a Latin word that has its origins in the Greek words abax or abakon (meaning “table” or “tablet”) which in turn, possibly originated from the Semitic word abq, meaning “sand”. The abacus is one of many types of counting devices which are used to count large numbers. …


DEEP DIVE INTO EDA

Till now I’ve not explained what’s EDA and those who have come so far, CONGRATULATIONS!!!, we will now start the EDA process. Heads up before we dive.

• There are no thumb rules for EDA or not we would have a designated template

• It entirely depends on how your data…


An important disclaimer, if you are a kind of person who just reads and move forward then this is not for you. Make sure you have your favourite IDE or Jupyter Notebook or Google Colab open to code along. Believe me it’s very easy to read and when time comes…


What is a neural network?

Neural networks are one of the main tools used in machine learning. As neural suggests, they are brain-inspired systems which are intended to replicate the way that we humans learn. …

Oscar Rojo

Master in Data Science. Passionate about learning new skills. Former branch risk analyst. https://www.linkedin.com/in/oscar-rojo-martin/. www.oscarrojo.es

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