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Replace all 0 values to NA
... without the [<- function:
A sample data frame dat (shamelessly copied from @Chase's answer):
dat
x y
1 0 2
2 1 2
3 1 1
4 2 1
5 0 0
Zeroes can be replaced with NA by the is.na<- function:
is.na(dat) <- !dat
dat
x y
1 NA 2
2 1 2
3 1 1
4 2 1
5 NA NA
...
What is the preferred Bash shebang?
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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What is the maximum length of a Push Notification alert text?
...me as a notification center.
Just as a reminder here is a very good note from the official documentation:
If necessary, iOS truncates your message so that it fits well in each notification delivery style; for best results, you shouldn’t truncate your message.
...
Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
...handles the conversion and formatting for you.
var maxFileSize = ByteSize.FromKiloBytes(10);
maxFileSize.Bytes;
maxFileSize.MegaBytes;
maxFileSize.GigaBytes;
It also does string representation and parsing.
// ToString
ByteSize.FromKiloBytes(1024).ToString(); // 1 MB
ByteSize.FromGigabytes(.5).To...
Differences between C++ string == and compare()?
...
@xtofl from Tony's example the generated codes are identical in the release build, they're different in the debug builds.
– JulianHarty
Apr 8 '17 at 8:25
...
UIRefreshControl without UITableViewController
...er view as this is immediately triggered as a segue event on instantiation from the storyboard.
– crarho
Jan 12 '17 at 0:46
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How to reload/refresh an element(image) in jQuery
Is it possible to reload an image with an identical file name from a server using jQuery?
12 Answers
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Superscript in CSS only?
...
The following is taken from Mozilla Firefox's internal html.css:
sup {
vertical-align: super;
font-size: smaller;
line-height: normal;
}
So, in your case it would be something, like:
.superscript {
vertical-align: super;
font-size: sm...
How to resolve “Waiting for Debugger” message?
...s to be accessible on port 8601 - If I do a screen capture (of the Device) from Eclipse - it works.
– Abhi
Dec 7 '10 at 11:59
23
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Import text file as single character string
...
Here's a variant of the solution from @JoshuaUlrich that uses the correct size instead of a hard-coded size:
fileName <- 'foo.txt'
readChar(fileName, file.info(fileName)$size)
Note that readChar allocates space for the number of bytes you specify, so r...