Is there a way to call a Mathematica function from R? I'm using RStudio.
I'm trying to build a 'package' in Mathematica and call it from R. By the way, for this to work, would the person need to have mathematica installed?
I've seen packages written in C++, being called in R. The system didn't seem to have any c++ compiler/editor installed...
Any help would be appreciated.
Related
Installed both R studio and ConsRank package but i have little R and Math knowledge.
I need to understand how to calculate and reach the result of the formula in attached files.
To solve this problem, correlation coefficient τx used which is intruduced by Emond and Mason (2002)
I tried to use ConsRank functions but my R knowledge was not enough.
FormulaFormula
MatrixMatrix
ResultResult
The first step is to install and load the package ConsRank using the following codes:
install.packages('ConsRank', dependencies=T)
library(ConsRank)
If you successfully load the package, you are good to go. The next step is to read the documentation of the package (Click Here) in which you will learn about what functions you will need and there are some different examples that help you understand the input and outputs.
Let me know if you needed any help running your scripts. Good Luck.
After forming the matrix( which is my resultant image ) from certain data I am trying to display the image using the "imagesc" in r. The same thing I already had done in Matlab. To do the same in r I found out "imagesc" in r. but when I use this function it is showing the following error message
No documentation for ‘imagesc’ in specified packages and libraries:
you could try ‘??imagesc’
Even I already incorporated
library(R.matlab)
please help me to resolve the issue? I am a beginner in r programming.
You are looking for the function imagesc in the wrong package.
The package R.matlab doesn't have such function (see R.matlab).
You can find it in the matlab package, though.
So just do:
install.packages("matlab")
library(matlab)
and you'll be good to go with imagesc.
That said, if your task is going to be a recurrent one, I think it's a good idea to use native R solutions, instead of Matlab's. In such case, you may want to check ggplot2::geom_tile.
Check this image, for instance:
I have defined some R functions in R studio which has some complicated scripts and a lot of readlines. I can run them successfully in R studio. Is there any way, like macros to transfer these user-defined functions to SAS 9.4 to use? I am not pretty familiar with SAS programming so it is better just copy the R functions into SAS and use it directly. I am trying to figure out how to do the transformation. Thank you!
You can't natively run R code in SAS, and you probably wouldn't want to. R and SAS are entirely different concepts, SAS being closer to a database language while R is a matrix language. Efficient R approaches are terrible in SAS, and vice versa. (Try a simple loop in R and you'll find SAS is orders of magnitude faster; but try matrix algebra in R instead).
You can call R in SAS, though. You need to be in PROC IML, SAS's matrix language (which may be a separate license from your SAS); once there, you use submit / R to submit the code to R. You need the RLANG system option to be set, and you may need some additional details set up on your SAS box to make sure it can see your R installation, and you need R 3.0+. You also need to be running SAS 9.22 or newer.
If you don't have R available through IML, you can use x or call system, if those are enabled and you have access to R through the command line. Alternately, you can run R by hand separately from SAS. Either way you would use a CSV or similar file format to transfer data back and forth.
Finally, I recommend seeing if there's a better approach in SAS for the same problem you solved in R. There usually is, and it's often quite fast.
I would like to adapt some Fortran 77 code so I can run programs and return results into R dataframes. I understand from my net searching that there are some tools in R that will allow fortran code to be compiled and run from inside R - perhaps this involves writing a package? I would appreciate if somebody could point me towards some beginner examples, books or tutorials on how I might go about starting to learn to do this. I have a reasonable understanding of Fortran 77 and running R, but am new to the idea of how to get the two languages to work together.
I would like to run some Matlab scripts. Nevertheless we don't have the Matlab licence so it is necessary a conversion from Matlab to R language. Unfortunately I'm totally new in Matlab but not in R. Is it possible to read Matlab scripts using R or is there an easy way to translate Matlab scripts in R?
Rewriting from one language to another can be a painstaking process, especially because your have to take great care that the outcomes of both sets of codes are the same. I see roughly four approaches:
Digest the goal of the scripts, put aside the matlab code, and rewrite in R
Try and mimic the matlab code in R
Run the matlab code in octave, and interface with R
Run the code in Octave entirely
These are roughly in order of amount of work. If you just want to get the Matlab code working, definitely use Octave, which should run the code with minimal changes. If you want to convert the code to R, and continue developing in R, I would go for the first option. In that way you can leverage the real strenghts of R, as R is quite different (link with info, comparison R and matlab). But it does take the largest amount of time. Even if you reimplement in R, I would recommend getting the code running in Octave to be able to see if your results in R fit with the Matlab code.