Reads district patterns from the 'patrones' sheet of the Excel file.
Arguments
- path
Path to Excel file
Value
Data frame with district patterns containing columns:
codigo_provincia, idv, patron (proportion 0-1)
Details
The 'patrones' sheet must contain:
Column 'codigo_provincia' with electoral district codes
Columns with 'idv' names (percentages 0-100)
Patterns are automatically converted to proportions (0-1)
