Play with parameters to show images in a Rmarkdown document

Read the information from a file with .gpx extension. This type of files are used to exchange information about GPS tracked routes in XML format.

All examples in https://rpubs.com/pep1024/reshape to transform (reshape) a data frame between the long and wide formats using `pivot_*` functions in `tidyr` package

Plot a heatmap of a random matrix of (n,m) elements and decorate it with grid lines, texts and personalized axis.

Examples of creation and manipulation of Date sequences

Tutorial about the reshape function to transform data frames between long and wide formats

Simple examples about how to group a continuous variable in given number of groups

This document shows examples of use for all graphical parameters of the R Graphics Package parameters