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Adding a column to a data.frame
...p <- as.factor(your.df$group)
no h_freq h_freqsq group
1 1 0.40998238 0.06463876 1
2 2 0.98086928 0.33093795 1
3 3 0.28908651 0.74077119 1
4 4 0.10476768 0.56784786 1
5 1 0.75478995 0.60479945 2
6 2 0.26974011 0.95231761 2
7 3 0.53676266 0.74370154...
Configure Flask dev server to be visible across the network
...s is Flask specific, but when I run an app in dev mode ( http://localhost:5000 ), I cannot access it from other machines on the network (with http://[dev-host-ip]:5000 ). With Rails in dev mode, for example, it works fine. I couldn't find any docs regarding the Flask dev server configuration. Any i...
How to drop rows of Pandas DataFrame whose value in a certain column is NaN
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AMC
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answered Nov 16 '12 at 9:34
eumiroeumiro
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Extracting specific columns in numpy array
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edited Aug 23 at 10:39
cs95
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How does Dijkstra's Algorithm and A-Star compare?
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answered Aug 26 '09 at 5:18
leizleiz
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How to change the output color of echo in Linux
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Programmatically Lighten or Darken a hex color (or rgb, and blend colors)
...nt. Just pass in a string like "3F6D2A" for the color ( col ) and a base10 integer ( amt ) for the amount to lighten or darken. To darken, pass in a negative number (i.e. -20 ).
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What to use as an initial version? [closed]
I usually start my projects with a version 1.0.0. As soon as I have some stuff together, I release it as 1.0.0 and move on with 1.1.0.
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Custom numeric format string to always display the sign
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301
Yes, you can.
There is conditional formatting. See Conditional formatting in MSDN
eg:
strin...
Type-juggling and (strict) greater/lesser-than comparisons in PHP
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PHP's c...