One R Tip a Day
@RLangTip
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One tip per day M-F on the R programming language #rstats. Brought to you by the R community team at Microsoft.
Joined May 2011
A tutorial from @ROpenSci on reproducible research with Docker containers https://t.co/sNXT6LWmzj
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boot(data,statistic,R) in the {boot} package will generate R bootstrap replicates of a statistic https://t.co/BIKbZIUJ18
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Use saveRDS(obj,"myfile") and readRDS(obj,"myfile") to save / read an R object to / from a file https://t.co/iZNHFboJSa
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To debug warnings, options(warn=2) converts warnings into errors https://t.co/Tnv8DFwtli
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If two packages define functions with the same name, use :: to call the one you want: https://t.co/0UjIhBAaUP
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Meet other R users at a local R user group in your area: https://t.co/3LrfnJzfGJ
#rstats
jumpingrivers.github.io
R User Groups | A list of R conferences and meetings.
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Use the Matrix package for efficient linear algebra with sparse, symmetric, positive semidefinite and general matrices https://t.co/EOvdlKNIZc
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The "round" function uses the "round-to-even" rule. round(3.5) and round(4.5) are both 4 https://t.co/PjdqmejUn6
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Look here https://t.co/9dO7niFjlz for documentation on mathematical functions like beta(a,b) or gamma(x) #rstats
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The story behind R release names like "Very Secure Dishes" https://t.co/I6XX6LnVH4
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Use TRUE and FALSE to represent the boolean values. These are reserved words, unlike T and F which can be overwritten as variables.
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Use colSums to quickly calculate totals from the columns of a large matrix or table: https://t.co/8vK1aWWWQH
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Type ?Syntax to learn the precedence of operators in the R language: https://t.co/GrRqgKFlD0
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What They Forgot to Teach You About R: e-book on the common sources of friction in data analysis with R, by @JennyBryan and @jimhester_
https://t.co/h5b0dq1IdU
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format(x, scientific=TRUE) prints numeric data in exponential format, so 0.0001 prints as 1e-04 https://t.co/sBvvDXpH7b
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Data Carpentry for Biologists: a self-guided 15-week course with videos and exercises in R https://t.co/Sx6RGD67D2
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Guide to density estimation in R from Deng and Wickham https://t.co/ZG896HPuOV
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rle(x) ("run-length encoding") computes the lengths of runs of equal values in a vector https://t.co/usvgdAWkqy
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