Web Scraping API USD a PEN - Bloomberg

scraping

Escrapeamos APIs de Bloomber para ver cambio de monedas de Dólares a Soles

Author

Affiliation

Keith Caballero

 

Published

March 5, 2022

Citation

Caballero, 2022

Scrapeo de APIs de Bloomberg

Importamos Librerias

Show code 
pacman::p_load(
  rvest,httr,jsonlite,tidyverse,lubridate,plotly
)

Creamos función ya que read_json nos genero errores de lectura

Show code 
read_url <- function(url){
  GET(url,
      config = add_headers(.headers = c(
        "User-Agent" = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36"
      ))
  ) %>% content()
  
}

APIs scrapeados

Show code 
api <- "https://www.bloomberg.com/markets2/api/history/USDPEN%3ACUR/PX_LAST?"
api_semanal <- paste0(api,"timeframe=5_YEAR&period=weekly&volumePeriod=weekly")
api_diario <- paste0(api,"timeframe=5_YEAR&period=daily&volumePeriod=daily")

Generamos los gráficos

USD A PEN Semanalmente

Show code 
(read_url(api_semanal) %>% 
  map_df("price") %>% 
  transmute(`DOL a PEN`=value,Fechas = ymd(dateTime)) %>% 
  ggplot(aes(Fechas,`DOL a PEN`)) +
  geom_line(size=0.6,alpha=0.7))

USD A PEN Diario

Show code 
(read_url(api_diario) %>% 
    map_df("price") %>% 
    transmute(`DOL a PEN`=value,Fechas = ymd(dateTime)) %>% 
    ggplot(aes(Fechas,`DOL a PEN`)) +
    geom_line(size=0.6,alpha=0.7))

Footnotes

    Corrections

    If you see mistakes or want to suggest changes, please create an issue on the source repository.

    Citation

    For attribution, please cite this work as

    Caballero (2022, March 5). Keith Stats Blog: Web Scraping API USD a PEN - Bloomberg. Retrieved from https://keithstatsblog.netlify.app/posts/2022-03-05-web-scraping-pen-bloomberg/

    BibTeX citation

    @misc{caballero2022web,
  author = {Caballero, Keith},
  title = {Keith Stats Blog: Web Scraping API USD a PEN - Bloomberg},
  url = {https://keithstatsblog.netlify.app/posts/2022-03-05-web-scraping-pen-bloomberg/},
  year = {2022}
}