# Python | Numpy matrix.ptp ()

Using the ` Numpy matrix.ptp () ` method, we can get a peek-to-peek value that is (maximum- minimum) along the axis from this matrix.

Syntax: `matrix.ptp(axis)`

Return: Return peek-to-peek value from given matrix

Example # 1:
In this example, we see that we can get the peek-to-peek value from a given matrix using the ` matrix.ptp () ` method.

 ` # import important module in python ` ` import ` ` numpy as np `   ` # make a matrix with NumPy ` ` gfg ` ` = ` ` np.matrix (` ` '[64, 1; 12, 3] '` `) ` ` `  ` # using the matrix.ptp () method ` ` geeks ` ` = ` ` gfg.ptp (` ` 1 ` `) `   ` print ` ` (geeks) `

Exit:

` [[63] [9]] `

Example # 2:

 ` # import important module into python ` ` import ` ` numpy as np `   ` # make a matrix with NumPy ` ` gfg ` ` = ` < code class = "plain"> np.matrix ( ` '[1, 2, 3; 4, 5, 6; 7, 8, -9] '` `) ` ` `  ` # using the matrix.ptp () method ` ` geeks ` ` = ` ` gfg.ptp (` ` 0 ` `) `   ` print ` ` (geeks) `

Exit:

` [[6 6 15]] `

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