subn

The subn function subtracts a value from a general lua table that may contain a multi-dimensional array or a mixture of numbers, strings, named keys, and sub-tables. Only numeric values found in the table are used in the calculation. The related sub function subtracts a number to a 1-dimensional array, CImage, or list of numbers. Since an array is a specific type of table that contains only numbers or sub-tables, this function can also be used for arrays.

Syntax

new_table = subn( tbl, value )

    tbl is a general lua table.

    value is a number.

    new_table is returned as a table.

Examples

The following script subtracts 3200.5 from all members of a 1-dimensional array.

The next script subtracts 3200.5 from the values in a complex, ugly table:

Related Topics

Table and Array Functions

addn

sub

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