# Get row numbers of NumPy array having element larger than X

• Last Updated : 11 Oct, 2020

Let’s see how to getting the row numbers of a numpy array that have at least one item is larger than a specified value X. So, for doing this task we will use numpy.where() and numpy.any() functions together.

Syntax: numpy.where(condition[, x, y])

Return: [ndarray or tuple of ndarrays] If both x and y are specified, the output array contains elements of x where condition is True, and elements from y elsewhere.

Syntax: numpy.any(a, axis = None, out = None, keepdims = class numpy._globals._NoValue at 0x40ba726c)

Return: [ndarray, optional]Output array with same dimensions as Input array, Placed with result

Example :

```Arr = [[1,2,3,4,5],
[10,-3,30,4,5],
[3,2,5,-4,5],
[9,7,3,6,5]]
and X = 6 then output is [ 0, 2 ].

Here,
[[1,2,3,4,5],
no element is greater than 6 so output is .

[10,-3,30,4,5],
10 is greater than 6 so output is .

[3,2,5,-4,5],
no element is greater than 6 so output is [0, 2].

[4,7,3,6,5]]
7 is greater than 6 so output is [0, 2].
```

Below is the implementation:

## Python3

 `# importing library``import` `numpy`` ` `# create numpy array``arr ``=` `numpy.array([[``1``, ``2``, ``3``, ``4``, ``5``],``                  ``[``10``, ``-``3``, ``30``, ``4``, ``5``],``                  ``[``3``, ``2``, ``5``, ``-``4``, ``5``],``                  ``[``9``, ``7``, ``3``, ``6``, ``5``] ``                 ``])`` ` `# declare specified value``X ``=` `6`` ` `# view array``print``(``"Given Array:\n"``, arr)`` ` `# finding out the row numbers``output  ``=` `numpy.where(numpy.``any``(arr > X,``                                ``axis ``=` `1``))`` ` `# view output``print``(``"Result:\n"``, output)`

Output:

```Given Array:
[[ 1  2  3  4  5]
[10 -3 30  4  5]
[ 3  2  5 -4  5]
[ 9  7  3  6  5]]
Result:
(array([1, 3], dtype=int64),)
```
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