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How to convert a data frame column to numeric type?
... a 1
2 b 2 2 b 2
3 c 3 3 c 3
4 d 4 4 d 4
5 e 5 5 e 5
and let us run:
> sapply(d, mode)
char fake_char fac char_fac num
"character" "character" "numeric" "numeric" "numer...
Save Screen (program) output to a file
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answered Mar 6 '14 at 14:46
FergieFergie
1,37411 gold badge99 silver badges88 bronze badges
...
Nginx serves .php files as downloads, instead of executing them
...unity/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-14-04 but when I try to run some .php file it's just downloading it...
for example... http://5.101.99.123/info.php it's working but... If I go to the main http://5.101.99.123 it's downloading my index.php :/
...
How can I extract audio from video with ffmpeg?
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445
To extract the audio stream without re-encoding:
ffmpeg -i input-video.avi -vn -acodec copy o...
See :hover state in Chrome Developer Tools
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edited Jun 3 at 4:51
KostasX
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answered Jul...
How to use arguments from previous command?
...8
pasja
34544 silver badges1010 bronze badges
answered Oct 24 '10 at 20:04
Paused until further notice.Paused ...
How to delete a module in Android Studio
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answered Jul 6 '14 at 2:28
matiashmatiash
51.4k1616 gold badges112112 silver badges145145 bronze badges
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How to get folder path from file path with CMD
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edited Aug 5 '11 at 19:46
Andriy M
69.3k1616 gold badges8484 silver badges139139 bronze badges
answer...
Convert SVG to PNG in Python
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import cairo
import rsvg
img = cairo.ImageSurface(cairo.FORMAT_ARGB32, 640,480)
ctx = cairo.Context(img)
## handle = rsvg.Handle(<svg filename>)
# or, for in memory SVG data:
handle= rsvg.Handle(None, str(<svg data>))
handle.render_cairo(ctx)
img.write_to_png("svg.png")
Update: ...
Redefine tab as 4 spaces
...on what you mean. Do you want actual tab characters in your file to appear 4 spaces wide, or by "tab" do you actually mean an indent, generated by pressing the tab key, which would result in the file literally containing (up to) 4 space characters for each "tab" you type?
Depending on your answer, ...