Sample health care providers in the USA. Health plans were required to obtain and use an NPI by May 23, 2008. See http://www.nber.org/data/npi.html for more information
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | ## Not run:
url <- "http://download.cms.gov/nppes/NPPES_Data_Dissemination_Aug_2015.zip"
# download a large dataset - don't run
download.file(url, "data/largefile.zip")
## 550600K .......... ...... 100% 1.26M=6m53s
# unzip the compressed file, measure time
system.time(
unzip("data/largefile.zip", exdir = "data")
)
## user system elapsed
## 34.380 22.428 193.145
bigfile <- "data/npidata_20050523-20150809.csv"
file.info(bigfile) # file info (not all shown)
## size: 5647444347
# bash scripts to generate the file:
cd data # change directory
split -b100m npidata_20050523-20150809.csv
system.time(df3 <- read.csv("data/xaa"))
system.time(df4 <- read_csv("data/xaa"))
split -l 10 aa mini # further split chunk 'aa' into 10 lines
cp miniaa ../data # copy the first into 'sample-data'
## End(Not run)
|
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