Articles by Frequena

Difference between unique() and duplicated()

October 20, 2016 | Frequena

When we work with data, we usually find with an obstacle: repeated values. This type of values don’t represent a critical problem if we have the ability to identify. Once we have that list of repeated values, it is very easy to discard, eliminate or simply extract. We are ... [Read more...]

How to create a fast and easy heatmap with ggplot2

October 17, 2016 | Frequena

The heatmaps are a tool of data visualization broadly widely used with biological data. The concept is to represent a matrix of values as colors where usually is organized by a gradient. We can find a large number of these graphics in scientific articles related with gene expressions, such as ... [Read more...]

Difference between paste() and paste0()

October 17, 2016 | Frequena

Probably, function paste is one of the most used function in R. The objective of this function is concatenate a series of strings. [crayon-58838298d6ebf491135746/] The arguments of the function are: [crayon-58838298d6ecf484406126/] … = The space to write the series of strings. sep = The element which separates every term. ... [Read more...]

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