Questions tagged [r]
R is a language and environment for statistical computing and graphics similar to S.
1
vote
1answer
33 views
best practice for data.table use in “formal” code
Consider a "large-ish" data set (~2-5M rows) that goes through multiple stages of cleaning/processing:
library(dplyr)
largedat %>%
mutate(
# overwrite v1 based on others
v1 = somefunc(...
-1
votes
1answer
65 views
Interest of having two functions doing the exact same thing [closed]
ls and objects functions are both from the base package and are exactly the same as discussed here. I've seen other examples of duplicated functions (in the tidyverse and base if I remember correctly)....
3
votes
2answers
139 views
What is considered good/best practice around handling ad-hoc coding requests?
I am a data scientist and do lots of programming in R/RStudio.
I like to be organised (as I'm sure (hope) most programmers do) and as such I always use the Project feature in RStudio to keep my work ...
5
votes
1answer
195 views
What is considered best practice around using git / VCS's when doing a complete code rewrite?
I am a data scientist who programs in R, but am relatively new to using version control (yes, I know!) and I am still learning lots about it.
FYI: I use BitBucket and Sourcetree
I understand the ...
0
votes
0answers
75 views
Which is the best way to conditionally set the value of a variable?
In the R language two ways exist to conditionally set the value of a variable:
variable <- if(condition) true_value else false_value
or
if(condition) variable <- true_value else variable <-...
-1
votes
2answers
88 views
What's a good term for an R value of length 1?
What's a good term for an R value of length 1?
In R, the simplest kind of value is an "atomic" vector with a primitive type like double, but it can have any length, so the term "atomic" is not what I ...
0
votes
1answer
310 views
UML class diagram for MVC project that run R project
I'm working on ASP.NET MVC project where controller calling static class that run R scripts from external R project
Controller
public ActionResult Index()
{
Rscript.Run("...
-1
votes
0answers
38 views
Is it bad practice to not separate the class definition and constructor into separate files? (specifically in R package development)
I am developing an R package and for some reason all of the current packages I have looked at put the class definition and class constructor in separate files. Usually a myClass--class.R file and a ...
0
votes
0answers
90 views
How to translate from managed to native class definitions
I have an input file, being the DLL of a C# piece of code, containing managed class definitions.
I also have a *.json file, who determines how the conversion should be done.
As an example, this is ...
0
votes
1answer
54 views
Can longitudinal data be seen as complying with 1st normal form?
This is probably a sloppy way to see it, but I wonder if the idea of longitudinal datasets (to be used in ggplot2, for instance), can be exlpained as complying with the criteria of data in a 1st ...
4
votes
1answer
1k views
What does AGPL v3 R-studio mean for code written on it? [closed]
Rstudio has a community version for free:
https://www.rstudio.com/products/rstudio/#Desktop
But mentions the license is AGPL v3.
Does this effect the licensing or IP rights of code written on the ...
1
vote
0answers
70 views
Mass Spectrometry Data Analysis
I'm currently in the process of writing a program in R to perform analysis of data from a mass spectrometry experiment. Well, that's the idea. I'm fairly new to R, and didn't actually perform the mass ...
2
votes
3answers
579 views
Is there a way to comment a source file using a separate file?
I'm using a large and complex library including R and C++ code, available online via a subversion repository. Trying to figure out how it works I took a bunch of notes in the source code itself, in ...
2
votes
1answer
45 views
increasing website pipeline performance by replacing for loops with vector statements perturbs output
I am inexperienced with iteration in R and am hoping to speed up a process as I am implementing some analysis in a website. I realise that this may be a Q for SO but I couldn't get an answer from them....
1
vote
0answers
114 views
Microsoft SQL server R Services GPL
R is licensed under GPL.
How does Microsoft offer SQL R services without providing the source code for the SQL server.
It does provide a the source for the R base packages.
Does this mean that any ...
3
votes
1answer
408 views
Can I use R via RDOTNET without having to provide the source code of my application
Can I use R via RDOTNET without having to provide the source code of my application.
R is covered under GNU GPLv3.
RDOTNET is under New BSD.
From the RDOTNET description:
"R.NET enables the .NET ...
-3
votes
1answer
105 views
What does set.seed(any number) command means? [duplicate]
I am currently studying R. While studying that I came across a command set.seed(any number) . After googling also I didn't understood much except that it has something to do with Random number ...
5
votes
3answers
508 views
Writing R packages to replace .R scripts?
In our company we have a handful of R users who have collectively written some ~30 .R scripts over the last year. The scripts are mostly 100 lines or less, defining useful and reusable functions.
...
3
votes
3answers
265 views
Can you do iterative development in c#? [closed]
I'm primarily a Python/R developer. In those languages, the way I develop is to sketch out a data and class structure, write the methods and their tests in interactive mode, then refactor them up into ...
3
votes
1answer
172 views
Why use atomic vectors or matrices in R at all?
In reading Hadley Wickham's Advanced R I learned about the difference between atomic vectors and lists; and matrices/arrays and dataframes. This is something I hadn't really appreciated before, and ...
-2
votes
1answer
164 views
Providing production code samples as part of an invited freelance work proposal? [closed]
I have only recently started to market myself as a 'programmer' rather than an analyst or something else entirely. In a recent search of freelance/part-time/contract work, I came across an ad for a ...
7
votes
2answers
2k views
Does an Rcpp-dependent package require a GPL license?
I'm writing a commercial package that uses R (GPL) for its computation. The GPL FAQ clearly states that GPLed programming language interpreters do not impose licensing restrictions on the "program" (...
2
votes
1answer
152 views
Expected time for lazy evaluation with nested functions?
A colleague and I are doing a free R course, although I believe this is a more general lazy evaluation issue, and have found a scenario that we have discussed briefly and I'd like to find out the ...
8
votes
1answer
306 views
Suggested method for extracting a standalone C library from an existing R package?
My group has been developing an R package to simulate plant growth (see GitHub repository). The R package uses .Call to interface with C.
We have decided that it would be worthwhile to create a ...
3
votes
1answer
189 views
How do references work in R?
I'm finding R confusing because it has such a different notion of reference than I am used to in languages like C, Java, Javascript... Ruby, Python, C++, well, pretty much any language I have ever ...
9
votes
4answers
2k views
Why are scientific programming languages so weird? [closed]
It seems to me that programming languages meant for use in science and engineering are consistently weird compared to general-purpose languages. Some examples off the top of my head:
In Matlab, each ...
60
votes
5answers
107k views
R vs Python for data analysis [closed]
I have been programming for about a year and I am really interested in data analysis and machine learning. I am taking part in a couple of online courses and am reading a couple of books.
Everything ...
3
votes
6answers
1k views
How to visualize the design of a program in order to communicate it to others
I am (re-)designing some packages for R, and I am currently working out the necessary functions, objects, both internal and for the interface with the user. I have documented the individual functions ...
2
votes
2answers
339 views
Where to place the R code for R+Sweave+LaTeX workflow
I spent the last week learning 3 new tools: R, Sweave, and LaTeX. One question that came to my mind when working through my first project: Where do I place the majority of the R code?
The tutorials ...
6
votes
6answers
974 views
Is there a canonical resource on R programming? [closed]
Considering I have no programming background, Is there a resource out there that's the de-facto standard for describing best practices, design methodologies, and other helpful information on R ...
1
vote
2answers
765 views
Mahout's Flexibility for generating recommendations
I am currently working on a system that will generate product recommendations like those on Amazon: "People who bought this also bought this.."
This is how I plan to do it:
Process the data using ...
2
votes
1answer
317 views
Incanter for real world statistical projects [closed]
I'm interested in statistical computing. R is a leader platform obviously but what about Incanter?
Incanter is at the top of my list since I'm a Clojure and JVM guy.
Do you have any real world ...
24
votes
6answers
9k views
Surviving MATLAB and R as a Hardcore Programmer [closed]
I love programming in languages that seem geared towards hardcore programmers. (My favorites are Python and D.) MATLAB is geared towards engineers and R is geared towards statisticians, and it seems ...
