Sooner or later, many of us need to process some numeric data in plain text format, be they system logs or sales totals, and to generate reports and charts out of those data. Scripts and utilities like gnuplot could be very useful in such cases, except when the results needs to be a normal spreadsheets with charts and formulas, which is both editable and compatible with people who only know how to deal with spreadsheets in office suites.
How do you quickly create a spreadsheet where, for example, every other line has a background of a different color? Here are a couple of methods.
The first one is faster (and works even in controlled environments where you can’t install extensions) if you want white rows alternated with colored ones: define a cell style and apply it only to cells in even (or odd) rows. Here is the detailed procedure: