Source Your Data Files

Source your data. Spell out exactly where it came from, so that someone other than you, several years in the future, could understand its origin.

Label the file name

Everyone has seen examples of bad file names:

  • data.xls
  • bldgdatalist.csv
  • data77.xls

Write a short but meaningful file name. It is a good idea to include data source in file name (eg acs2018, worldbank, or eurostat). If different versions of the data are floating around, add the current date at the end, in YYYY-MM-DD format. Good file names look like this:

  • town-demographics-2019-12-02.xls
  • census2010_population_by_county.csv
  • eurostat-1999-2019-CO2_emissions.xlsx

Save source data in separate sheet

Before modifying the original dataset, make sure to duplicate it to avoid any data losses. One way is to click (or right-click) on the spreadsheet tab to copy the sheet to another tab as a backup.

Add a source tab, after the data, with notes to remind you and others about its origins and when it was last updated.

Learn more

Lisa Charlotte Rost, How to prepare your data for analysis and charting in Excel & Google Sheets,

TODO: Source your data

 - explain that data cannot be copyrighted, but representations of data can be
 - open-source and creative commons
 - credit sources and collaborators on dataviz products and readme files
 - Whose perspectives does your data privilege? Whose stories remain untold?