Advanced tabular data processing with pandas
Advanced tabular data processing with pandas
Day 2
Pandas library
? Library for tabular data I/O and analysis ? Useful in stored scripts and in ipython notebooks
Biocomputing Bootcamp 2016
DataFrame
? Tables of 2D data = rows x columns ? Similar to "data.frame" in R ? Notebook provides "pretty print"
Biocomputing Bootcamp 2016
Read data frames from files
? Pandas can read data from various formats ? Most common in genomics: ? pd.read_table ? read from comma or tab delimited file
?
? Full docs here
? pd.read_excel ? read from Excel spreadsheet ?
docs/version/0.18.0/io.html#io-excel-reader
? Full docs here
? Read in US Cereal stats table (source) ? What type of value does this return?
Biocomputing Bootcamp 2016
Write data frames to files
? Data can be written out in various formats too ? df.to_csv ? write to tab/comma delimited
? where df is a DataFrame value ?
docs/version/0.18.0/io.html#io-store-in-csv
? Write US cereal stats back out to disk, using comma deliminters, to "cereals.csv".
Biocomputing Bootcamp 2016
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