# Introduction to sidrar

## R Interface to the SIDRA’s API

The “sidrar” R package seeks to provide direct access to the data of SIDRA - Sistema IBGE de Recuperação Automática - within the R environment in an easy and flexible way.

## Installation

To install the version available on CRAN:

install.packages("sidrar")

To install the development version hosted on Github:

library(devtools)
install_github("rpradosiqueira/sidrar")

## Functions

For the time being, the “sidra” package contains only three functions:

get_sidra          It recovers data from the given table
according to the parameters

info_sidra         It allows you to check what parameters
are available for a table via an web browser

search_sidra       It searches which tables have a particular
word in their names

## Examples

### get_sidra

1. Let’s assume that we want the IPCA (Índice de Preços ao Consumidor Amplo) for the city of Campo Grande/MS. However, we will only recover the overall percentage rate in the last 12 months. To do this simply execute:
library(sidrar)

get_sidra(x = 1419,
variable = 63,
period = c("last" = 12),
geo = "City",
geo.filter = 5002407,
classific = "c315",
category = list(7169),
format = 3)

1. In this example we will download the Gini index data for the 2014 GDP of the states, containing only the codes in the table (format = 1):
get_sidra(x = 5939,
variable = 529,
period = "2014",
geo = "State",
format = 1)

1. Finally, if you want to put the parameters of the API directly, just execute:
get_sidra(api = "/t/5938/n3/all/v/37/p/last%201/d/v37%200")

For most users the data request is done via the online portal (https://sidra.ibge.gov.br). In this case, if you want to save the parameters of the table selected in the portal to a posterior request of the same table via sidrar, you should copy the path in the red rectangle and pass to the api argument in get_sidra:

### info_sidra

In the previous examples we know how to recover data from tables according to the parameters reported. However, if I do not know what the parameters are, how should I proceed? To verify the parameters (variables, classifications, periods, etc.) of a given table, simply use the function “info_sidra”, informing the code of the table. The function returns a list with the possible parameters in the console. However, if wb = TRUE, the user can allow the result to be displayed in an web browser.

if wb = TRUE:

info_sidra(5939, wb = TRUE)
#> Can the web browser be open? (y/n):

By placing y, we have in this example:

### search_sidra

If the user wants to know if there is a table that contains a certain term / word, simply use the function ** search_sidra ** informing the words of interest. The function returns the tables containing these terms in their headings.

search_sidra(c("gini"))