This example shows how to read a 3-dimensional array from an excel file (threedimarr.mos) and from a generic spreadsheet (threedimarr5.mos) where the last index is specifed 'across the columns', resulting in a pivot-style table format where the first N-1 columns contain index values (here: 2 index columns). Model versions (2) and (4) show the same example for databases, and model version (6) works with data in CSV format.

Note that standard use of the 'partndx' option for spreadsheets assumes that the last index is a set of type 'range', the example partidxstr.mos defines a utility routine 'makelabel' that makes it possible to work with a 'set of string' for the last index.

,,"Index 3",,,,
"Index1","Index2","Index3_1","Index3_2","Index3_3","Index3_4","Index3_5"
2,"A",211,212,213,214,215
2,"B",221,222,223,224,225
2,"C",231,232,233,234,235
1,"A",111,112,113,114,115
1,"D",121,122,123,124,125
1,"E",131,132,133,134,135