rafapereirabr

```
################# 4) Build a Balanced Panel data set  ------------------------------
# data with one observation for each area each day, even if there was no notification on that day/area

# get all dates and munis
all_munis <- unique(df$code_muni)
all_dates <- seq(min(df$DT_NOTIFIC),
                 max(df$DT_NOTIFIC),
                 by = "day")

rafapereirabr

Color palette inspired by this gorgeous image of Mars landscape, captured by HiRISE (NASA) and processed by Seán Doran. I created this color scale with the help of Chroma.js Color Palette Helper.

Image credit: HiRISE & Seán Doran

rafapereirabr

Creating an animated gif of public transport networks using GTFS data and the gtfs2gps package

In this gist we show with a reproducible example how to create an animation of public transport networks using GTFS data in R. We use a few packages to do this. One of the core packages here is the new gtfs2gps. The gtfs2gps package converts public transport data in GTFS format to GPS-like records in a data.frame/data.table, which we will be using to create a .gif with the gganimate package.

Step 1 - Convert GTFS to GPS-like records

The first step is to process a GTFS.zip file. The function gtfs2gps{gtfs2gps} interpolates the space-time position of each vehicle in each trip considering the network distance and average speed between stops. The output is a data.table where each row represents the timestamp of each vehicle at a given spatial resolution. In this example, we use a sample of the public transport network of Sao Paulo (Brazil) mapped e

rafapereirabr

Using R and the geobr package to plot Brazilian metropolitan areas in different years.

library(geobr)
library(dplyr)
library(ggplot2)
library(sf)

rafapereirabr

### how to use R to find your most popular tweet of 2019
# code by @nnstats

library(rtweet)
library(tidyverse)
library(lubridate)

show_most_popular_tweet <- function(user, year){
  
  y <- year

rafapereirabr

Simple example of how to create a world map using full hemispheric orthographic projection in R

library(sf)
library(ggplot2)
library(mapview)
library(lwgeom)
library(rnaturalearth)

rafapereirabr

Simple example of how to create a world map using full hemispheric orthographic projection in R

library(sf)
library(ggplot2)
library(mapview)
library(lwgeom)
library(rnaturalearth)

rafapereirabr

# Libraries
  library(geobr)
  library(leafgl)
  library(leaflet)
  library(sf)
  library(colourvalues)

# get data of disaster risk areas in Brazil using the geobr package

rafapereirabr

R tip of the day: partial string matching

The data.table package has the operator %like%, which is super handy for partial string matching:

"system with blue screen" %in% "blue"
> FALSE

"system with blue screen" %like% "blue"
> TRUE

rafapereirabr

Quick intro to geobr

geobr is an R package that allows users to easily download shapefiles of the Brazilian Institute of Geography and Statistics (IBGE) and other official spatial data sets of Brazil.

Installation

 install.packages("geobr")
  
  library(geobr)