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How to set size for local image using knitr for markdown?
...is the label of the chunk where the plot has been generated, i is the plot index (within this chunk) and ext is the file extension (by default png in RMarkdown documents).
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Selecting/excluding sets of columns in pandas [duplicate]
...]] where n is the last column of n number of columns, I'm trying negative indexing [[-1]]<- it isn't working :( help!~
– 3kstc
Mar 8 '18 at 3:26
5
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CSS3 Rotate Animation
...ght:114px;
top:400px;
margin:0 auto;
margin-left:-195px;
z-index:0;
-webkit-transition-duration: 0.8s;
-moz-transition-duration: 0.8s;
-o-transition-duration: 0.8s;
transition-duration: 0.8s;
-webkit-transition-property: -webkit-transform;
-moz-transition-pr...
How to make phpstorm display line numbers by default?
...lt?
Couldn't find that option. It's kind of annoying to turn them on manually for each page.
19 Answers
...
Cell spacing in UICollectionView
...ionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
return [self getCellSize:indexPath]; // will be w120xh100 or w190x100
// if the width is higher, only one image will be shown in a line
}
#pragma mark collection view cell paddin...
count the frequency that a value occurs in a dataframe column
...requency back to the original dataframe use transform to return an aligned index:
In [41]:
df['freq'] = df.groupby('a')['a'].transform('count')
df
Out[41]:
a freq
0 a 2
1 b 3
2 s 2
3 s 2
4 b 3
5 a 2
6 b 3
[7 rows x 2 columns]
...
I want to exception handle 'list index out of range.'
...ndling the exception is the way to go:
try:
gotdata = dlist[1]
except IndexError:
gotdata = 'null'
Of course you could also check the len() of dlist; but handling the exception is more intuitive.
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Is there a way to make R beep/play a sound at the end of a script?
...ve it tweet when it's done: http://cran.r-project.org/web/packages/twitteR/index.html
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How to get default gateway in Mac OSX
...se of multiple default routes use:
netstat -rn | awk '/default/ {if ( index($6, "en") > 0 ){print $2} }'
192.168.128.1
These examples tested in Mavericks Terminal.app and are specific to OSX only. For example, other *nix versions frequently use 'eth' for ethernet/wireless connections...
Remove folder and its contents from git/GitHub's history
...od I use to completely remove a directory from the git history using the --index-filter option, which runs much quicker:
# Make a fresh clone of YOUR_REPO
git clone YOUR_REPO
cd YOUR_REPO
# Create tracking branches of all branches
for remote in `git branch -r | grep -v /HEAD`; do git checkout --tra...