Post_data

non-equi merge in data.table and epidemiology

I will present the basic concepts of non-equi merges in data.table, and apply it to two common situations

How to find someone in a data frame

I will show my solution to efficiently identify persons and find someone in a data frame in R.

COVID19 data: pdf scrapping

Use R to get data on pdf reports about COVID19 (spanish data or WHO)

Read html tables with cells spanning on multiple rows

A function to scrapp html table with cells spanning on multiple rows

Spatial gradient calculation

Use R to calculate a gradient, and plot it with ggplot