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How do you get the magnitude of a vector in Numpy?
...ray -- say x.norm() -- but oh well).
import numpy as np
x = np.array([1,2,3,4,5])
np.linalg.norm(x)
You can also feed in an optional ord for the nth order norm you want. Say you wanted the 1-norm:
np.linalg.norm(x,ord=1)
And so on.
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The $.param( ) inverse function in JavaScript / jQuery
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answered Jun 9 '11 at 19:23
ccecce
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Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
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13 Answers
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How to check if a float value is a whole number
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Sorting a Python list by two fields
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BrechtDeMan
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answered Mar 6 '11 at 19:38
mouadmouad
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How do I declare and initialize an array in Java?
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2737
You can either use array declaration or array literal (but only when you declare and affect the...
How to calculate a Mod b in Casio fx-991ES calculator
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135
This calculator does not have any modulo function. However there is quite simple way how to com...
Python 3: ImportError “No Module named Setuptools”
I'm having troubles with installing packages in Python 3.
9 Answers
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Change the color of glyphicons to blue in some- but not at all places using Bootstrap 2
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answered Aug 20 '13 at 12:32
Vikas GhodkeVikas Ghodke
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How to add a new row to an empty numpy array
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237
The way to "start" the array that you want is:
arr = np.empty((0,3), int)
Which is an empty ...