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Subset of rows containing NA (missing) values in a chosen column of a data frame
....na() instead. This should do it:
new_DF <- DF[rowSums(is.na(DF)) > 0,]
or in case you want to check a particular column, you can also use
new_DF <- DF[is.na(DF$Var),]
In case you have NA character values, first run
Df[Df=='NA'] <- NA
to replace them with missing values.
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In what areas might the use of F# be more appropriate than C#? [closed]
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edited May 8 '10 at 14:01
community wiki
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How do I wait for an asynchronously dispatched block to finish?
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304
Trying to use a dispatch_semaphore. It should look something like this:
dispatch_semaphore_t s...
Android EditText delete(backspace) key event
...anampullan
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Any decent text diff/merge engine for .NET? [closed]
...onent that uses Google's Diff/Patch/Match. It works from .NET.
Update, 2010 Oct 17: The Google Diff/Patch/Merge code has been ported to C#. The COM component still works, but if you're coming from .NET, you'll wanna use the .NET port directly.
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Lists: Count vs Count() [duplicate]
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130
Count() is an extension method introduced by LINQ while the Count property is part of the List i...
What is the command to list the available avdnames
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edited May 8 '18 at 9:02
Günter Zöchbauer
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How to view method information in Android Studio?
...very time you select a method with your mouse though.
Android Studio 1.0: You have to hold CTRL if you want to get hold of documentation window for e.g. scrolling documentation otherwise as you move your mouse away from method documentation window will disappear.
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What are the benefits of learning Vim? [closed]
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I've been using vi and vim also for some 20 years, and I'm still learning new things.
David Rayner's Best of Vim Tips site is an excellent list, though it's probably more useful once you have some familiarity with vim.
I also want to mention the ViEmu site which ha...
No line-break after a hyphen
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590
Try using the non-breaking hyphen &#8209;. I've replaced the dash with that character in you...