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Why does Sql Server keep executing after raiserror when xact_abort is on?
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edited Oct 10 '13 at 20:25
Ian Boyd
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How do I ZIP a file in C#, using no 3rd-party APIs?
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edited Mar 24 '11 at 13:03
adrianbanks
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How can I extract a good quality JPEG image from a video file with ffmpeg?
...2).
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This will work with any vid...
Bash command to sum a column of numbers [duplicate]
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10 Answers
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Active
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What is the difference between “px”, “dip”, “dp” and “sp”?
...sed on the physical density of the screen. These units are relative to a 160
dpi screen, so one dp is one pixel on a 160 dpi screen. The ratio of
dp-to-pixel will change with the screen density, but not necessarily
in direct proportion. Note: The compiler accepts both "dip" and
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How do I tell Matplotlib to create a second (new) plot, then later plot on the old one?
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edited Jun 10 '18 at 18:54
answered Aug 4 '11 at 1:40
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Remove characters after specific character in string, then remove substring?
...om/somepage.aspx?whatever";
int index = input.IndexOf("?");
if (index > 0)
input = input.Substring(0, index);
Edit: If everything after the last slash, do something like
string input = "http://www.somesite.com/somepage.aspx?whatever";
int index = input.LastIndexOf("/");
if (index > 0)
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Python argparse: default value or specified value
...example=1)
% test.py --example 2
Namespace(example=2)
nargs='?' means 0-or-1 arguments
const=1 sets the default when there are 0 arguments
type=int converts the argument to int
If you want test.py to set example to 1 even if no --example is specified, then include default=1. That is, with
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Plot smooth line with PyPlot
...o smooth out your data yourself:
from scipy.interpolate import spline
# 300 represents number of points to make between T.min and T.max
xnew = np.linspace(T.min(), T.max(), 300)
power_smooth = spline(T, power, xnew)
plt.plot(xnew,power_smooth)
plt.show()
spline is deprecated in scipy 0....
Finding the index of elements based on a condition using python list comprehension
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answered Sep 1 '11 at 13:20
Mike GrahamMike Graham
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