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4 hours
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16 Videos
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56 Exercises
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3,042 Participants
Charlotte Wickham | DataCamp 他老姐在教。
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Downloading files and using specialised packages to get data from web
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httrpackage to query APIs usingGET()andPOST() -
JSON and XML 1: data formats commonly returned
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CSS 2 to navigate and extract data from webpages
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download.file()可以防止每次链接网络，好累。
csv_url <- "http://s3.amazonaws.com/assets.datacamp.com/production/course_1561/datasets/chickwts.csv
# Download the file with download.file()
download.file(url = csv_url, destfile = "feed_data.csv")
{r cache = TRUE} # Read it in with read.csv() csv_data <- read.csv("feed_data.csv")