`r_cnt(C;S)`

Returns the number of columns within a given set of columns.

Function type

Vector only

Syntax

r_cnt(C;S)

Input

Argument Type Description

Argument	Type	Description
`C`	any	A space- or comma-separated list of column names `C` may also be a string expression (in single quotes) constituting a pattern for matching columns. For instance, `'foo*'` specifies all columns that begin with "foo". If `C` is omitted, the values in all of the columns are included.
`S`	integer	A boolean column or an expression in `rcv_`/`rcn_`/`rct_` which determines whether or not that column is selected to be included in the calculation. See System variables for more information about `rcv_`/`rcn_`/`rct_`. If `S` is omitted, all columns will be considered by the function (subject to any prior column selections).

C

any

A space- or comma-separated list of column names

C may also be a string expression (in single quotes) constituting a pattern for matching columns. For instance, 'foo*' specifies all columns that begin with "foo".

If C is omitted, the values in all of the columns are included.

S

integer

A boolean column or an expression in rcv_/rcn_/rct_ which determines whether or not that column is selected to be included in the calculation. See System variables for more information about rcv_/rcn_/rct_.

If S is omitted, all columns will be considered by the function (subject to any prior column selections).

Return Value

For each row of the table, r_cnt returns an integer value corresponding to the number of columns specified by C.

Sample Usage


`c1`	`c2`	`c3`	`c4`	`r_cnt(;)`	`r_cnt(c1 c2;)`
2	5	7	2	4	2
7	7	4	1	4	2
NA	0	9	3	4	2
NA	NA	NA	NA	4	2