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Automatically expanding an R factor into a collection of 1/0 indicator variables for every factor le
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@colin, Not fully automatic, but you can use naresid to put the missing values back in after using na.exclude. A quick example: tmp <- data.frame(x=factor(c('a','b','c',NA,'a'))); tmp2 <- na.exclude(tmp); tmp3 <- model.matrix( ~x-1, tmp2); tmp4 <- naresid(attr(t...
Convert blob URL to normal URL
...data: URLs are probably not what you mean by "normal" and can be problematically large. However they do work like normal URLs in that they can be shared; they're not specific to the current browser or session.
share
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Tools to get a pictorial function call graph of code [closed]
...ce which has many source files of C code. Although I can see the functions called from a function in MS VS2005 using the Object browser, and in MSVC 6.0 also, this only shows functions called from a particular function in a non-graphical kind of display. Additionally, it does not show the function c...
Remove rows with all or some NAs (missing values) in data.frame
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tidyr has a new function drop_na:
library(tidyr)
df %>% drop_na()
# gene hsap mmul mmus rnor cfam
# 2 ENSG00000199674 0 2 2 2 2
# 6 ENSG00000221312 0 1 2 3 2
df %>% drop_na(rn...
What is the default location for MSBuild logs?
... a bit of a hack.)
In your VS Managed solution, add a new project (Let's call it 'Make').
a. The project type you want is Visual C++/NMake project.
Define the MSBuild commands you need on the command line (see below).
Change the solution configuration to build the NMake project instead of the norm...
Converting XML to JSON using Python?
... some understanding of what you want to do with the results.
That being said, Python's standard library has several modules for parsing XML (including DOM, SAX, and ElementTree). As of Python 2.6, support for converting Python data structures to and from JSON is included in the json module.
So th...
How to tag an older commit in Git?
...eb02 -m "Message here"
Where 9fceb02 is the beginning part of the commit id.
You can then push the tag using git push origin v1.2.
You can do git log to show all the commit id's in your current branch.
There is also a good chapter on tagging in the Pro Git book.
Warning: This creates tags with...
Javascript call() & apply() vs bind()?
I already know that apply and call are similar functions which set this (context of a function).
22 Answers
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Is there a benefit to defining a class inside another class in Python?
...ide of class foo instead, as well as its inherited version (which would be called bar2 for example), then defining the new class foo2 would be much more painful, because the constuctor of foo2 would need to have its first line replaced by self.a = bar2(), which implies re-writing the whole construct...
Can jQuery get all CSS styles associated with an element?
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I do not understand how to use it, There's something called jsfiddle that most people use to help. Good programmer are the worse teacher
– Gino
Jun 13 '16 at 21:10
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