In msperlin/adfeR: Data, exercises and Functions for Book "Analise de Dados Financeiros e Economicos com o R"

my_f <- adfeR::get_data_file('SP500.csv')

df_SP500 <- readr::read_csv(my_f, 
                     col_types = readr::cols())

my_msg <- paste0('There are ', nrow(df_SP500), ' rows and ', 
                 ncol(df_SP500), ' columns in file ', basename(my_f))
message(my_msg)

my_sol <- nrow(df_SP500)

my_answer <- adfeR::make_random_answers(my_sol)

#check_answers(my_answers)

Question

Use função adfeR::get_data_file para acessar o arquivo SP500.csv no repositório de dados do livro. Importe o conteúdo do arquivo no R com função readr::read_csv. Quantas linhas existem no dataframe resultante?

Solution

Meta-information

extype: num exsolution: r my_sol exname: "load csv" exshuffle: TRUE

msperlin/adfeR documentation built on March 26, 2021, 3:05 a.m.