datatable.rowargmin()

datatable.

rowargmin

(

*cols

)

sourcetests

Added in version 1.1.0

For each row, find the smallest value among the columns from cols.

Parameters

cols

FExpr

Input columns.

return

FExpr

f-expression consisting of one column that has the same number of rows as in cols. The column stype int64.

except

TypeError

The exception is raised when cols has non-numeric columns.

Examples

from datatable import dt, f DT = dt.Frame({"A": [1, 1, 2, 1, 2], "B": [None, 2, 3, 4, None], "C":[True, False, False, True, True]}) DT

	A	B	C
	int32	int32	bool8
0	1	NA	1
1	1	2	0
2	2	3	0
3	1	4	1
4	2	NA	1

5 rows × 3 columns

DT[:, dt.rowargmin(f[:])]

	C0
	int64
0	0
1	2
2	2
3	0
4	2

5 rows × 1 column

See Also

• rowargmax() – find the index of the largest element row-wise.