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adding noise to a signal in python
...
... And for those who - like me - are very early in their numpy learning curve,
import numpy as np
pure = np.linspace(-1, 1, 100)
noise = np.random.normal(0, 1, 100)
signal = pure + noise
...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
...must use each attribute: nonatomic , copy , strong , weak , and so on, for a declared property, and explain what each does? Some sort of example would be great also. I am using ARC.
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how to create a file name with the current date & time in python?
...(answers your question) of getting a string with the current time and date format you specify:
import time
timestr = time.strftime("%Y%m%d-%H%M%S")
print timestr
yields:
20120515-155045
so your filename could append or use this string.
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How to print a percentage value in python?
...
format supports a percentage floating point precision type:
>>> print "{0:.0%}".format(1./3)
33%
If you don't want integer division, you can import Python3's division from __future__:
>>> from __future__...
How to stop flask application without using ctrl-c
...stop flask application by using flask-script.
I have searched the solution for a while. Because the framework doesn't provide "app.stop()" API, I am curious about how to code this. I am working on Ubuntu 12.10 and Python 2.7.3.
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How to update PATH variable permanently from Windows command line?
...ment. Do this by editing the values in HKEY_CURRENT_USER\Environment. As before, make sure that you broadcast a WM_SETTINGCHANGE message.
You should be able to do this from your Java application easily enough using the JNI registry classes.
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Is it worth using Python's re.compile?
Is there any benefit in using compile for regular expressions in Python?
26 Answers
26...
What's the bad magic number error?
...c' -delete
If they are not yours, you'll have to either get the py files for re-compilation, or an interpreter that can run the pyc files with that particular magic value.
One thing that might be causing the intermittent nature. The pyc that's causing the problem may only be imported under certai...
Positioning MKMapView to show multiple annotations at once
...tomRightCoord.latitude = 90;
bottomRightCoord.longitude = -180;
for(id<MKAnnotation> annotation in mapView.annotations) {
topLeftCoord.longitude = fmin(topLeftCoord.longitude, annotation.coordinate.longitude);
topLeftCoord.latitude = fmax(topLeftCoord.latitude, ann...
How do I concatenate strings and variables in PowerShell?
..., yes "... $name ..." will work all the same, but in the original question for which this answer addresses, the question is how to access object properties. so if $name.id -eq 42 then "... $name.id ..." would not work like you want because it would render like ... @{id=42}.id ... instead of the desi...