ColumnDrop• ColumnDrop[data, spec] drops columns specified by spec.
• ColumnDrop[data, n] removes the first n columns from data.
• ColumnDrop[data, -n] removes the last n columns from data. • Examples: ColumnDrop[{{1, 2, 3}, {4, 5, 6}}, 1]  .
• ColumnDrop[{{1, 2, 3}, {4, 5, 6}}, 2]  .
• ColumnDrop[{{1, 2, 3}, {4, 5, 6}}, -1]  .
• ColumnDrop[{{1, 2, 3}, {4, 5, 6}}, -2] .
• See also: Column, ColumnTake.
 Examples Using InstantCalculatorsHere are the InstantCalculators for the ColumnDrop function. Enter the parameters for your calculation and click Calculate to see the result.
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Entering Commands DirectlyYou can paste a template for this command via the Text Input button on the ColumnDrop Function Controller. This defines a 4  4 matrix called data.
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This returns data with the first two columns dropped.
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This returns data with the last column dropped.
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Clear the variable definition.
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