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How to write a multidimensional array to a text file?
... commented out lines. By default, numpy.loadtxt will ignore any lines that start with # (or whichever character is specified by the comments kwarg). (This looks more verbose than it actually is...)
import numpy as np
# Generate some test data
data = np.arange(200).reshape((4,5,10))
# Write the ar...
How do I use the nohup command without getting nohup.out?
...nning program ("process") has its own set of these, and when a new process starts up it has three of them already open: "standard input", which is fd 0, is open for the process to read from, while "standard output" (fd 1) and "standard error" (fd 2) are open for it to write to. If you just run a com...
How do you close/hide the Android soft keyboard using Java?
...as a parameter:
view = fragment.getView().getRootView().getWindowToken();
Starting from your content body:
view = findViewById(android.R.id.content).getRootView().getWindowToken();
UPDATE 2: Clear focus to avoid showing keyboard again if you open the app from the background
Add this line to the e...
NSOperation vs Grand Central Dispatch
...onQueues within my applications for managing concurrency. However, since I started using GCD on a regular basis, I've almost entirely replaced NSOperations and NSOperationQueues with blocks and dispatch queues. This has come from how I've used both technologies in practice, and from the profiling I'...
How do I use vi keys in ipython under *nix?
...
You may set vi in your .ipython start-up config file. Create one if you don't have it by adding a file to ~/.ipython/profile_default/startup/ called something like start.py. Here's an example:
# Initializing script for ipython in ~/.ipython/profile_def...
How to hide image broken Icon using only CSS/HTML?
...g. When objects fail they don't show broken icons; they just do nothing. Starting with IE8, you can use Object and Img tags interchangeably. You can resize and do all the glorious stuff you can with regular images too. Don't be afraid of the object tag; it's just a tag, nothing big and bulky get...
Should I instantiate instance variables on declaration or in the constructor?
...personal "rule" (hardly ever broken) is to:
declare all variables at the start of
a block
make all variables final unless they
cannot be
declare one variable per line
never initialize a variable where
declared
only initialize something in a
constructor when it needs data from
the constructor to do...
IEnumerable vs List - What to Use? How do they work?
...abase table you don't want to copy the entire thing into memory before you start processing the rows.
Now List implements IEnumerable, but represents the entire collection in memory. If you have an IEnumerable and you call .ToList() you create a new list with the contents of the enumeration in memo...
What is the difference between google tag manager and google analytics?
...asons why to use GTM: http://www.lunametrics.com/blog/2014/04/08/8-reasons-start-google-tag-manager/
For Android, A draft implementation is at https://developers.google.com/tag-manager/android/v4/#getting-started
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Moving average or running mean
...ll members equal to 1/N. The numpy implementation of convolve includes the starting transient, so you have to remove the first N-1 points:
def runningMeanFast(x, N):
return np.convolve(x, np.ones((N,))/N)[(N-1):]
On my machine, the fast version is 20-30 times faster, depending on the length o...