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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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form_for but to post to a different action
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answered Mar 16 '11 at 2:43
AustinAustin
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What is Microsoft.csharp.dll in .NET 4.0
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edited Mar 13 '12 at 8:26
Matthew Lock
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Java: PrintStream to String?
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193
Use a ByteArrayOutputStream as a buffer:
import java.io.ByteArrayOutputStream;
import java.io.P...
How to change plot background color?
...uple of float values in [0, 1] (e.g., (0.1, 0.2, 0.5) or (0.1, 0.2, 0.5, 0.3));
a hex RGB or RGBA string (e.g., '#0F0F0F' or '#0F0F0F0F');
a string representation of a float value in [0, 1] inclusive for gray level (e.g., '0.5');
one of {'b', 'g', 'r', 'c', 'm', 'y', 'k', 'w'};
a X11/CSS4 co...
How to remove debugging from an Express app?
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edited Apr 1 '14 at 19:31
Adaptabi
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answered Ju...
How do I dynamically change the content in an iframe using jquery?
... with an iframe and some jquery code that changes the iframe content every 30 seconds. The content is in different webpages.
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Replace specific characters within strings
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With a regular expression and the function gsub():
group <- c("12357e", "12575e", "197e18", "e18947")
group
[1] "12357e" "12575e" "197e18" "e18947"
gsub("e", "", group)
[1] "12357" "12575" "19718" "18947"
What gsub does here is to replace each occurrence of "e" with an empty string "".
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