Skip to main content

interoperability - Are there any "RLink" like projects, which enable the interaction between R and Mathematica?



I want to borrow the vast amount of packages of R. I know there was one but it is neither sold nor supported anymore. So are there any active open source projects for linking R with Mathematica? Thank you.



Answer



Erich Neuwirth on MathGroup mentioned a solution for Windows (free for non-commercial applications) that you can download here.


Here is his example with small updates from Sasha and Mark Fisher. After downloading the R instalation and DCOM server stuff I tried it and it seems to work just fine.


Needs["NETLink`"]
myR = CreateCOMObject["StatConnectorSrv.StatConnector"]
myR@Init["R"]
myR@SetSymbol["xxx", 12321]
result1 = myR@GetSymbol["xxx"]
myR@EvaluateNoReturn["randmat<-matrix(rnorm(100),10)"]

rmat = myR@GetSymbol["randmat"]
result2 = myR@Evaluate["solve(matrix(1:4,2))"]

(*
==> NETLink`Objects`NETObject$3810539581$1070974657101825
*)

(*
==> 12321
*)


(*
==> {{-0.2729702674, 1.803861976, 0.5813040979, 0.1600081953, 
  0.7538751951, 0.3923246778, 1.240256949, 2.143071289, -0.2112634412,
   0.9417189228}, {-0.1815065752, 0.6340400316, 
  0.6235181836, -0.1729713552, -0.965223049, -0.8076688634, 
  0.6125102682, 0.8043927759, 
  0.2623272614, -0.7300377248}, {-0.1573784247, 
  1.745921499, -1.223295754, 
  0.7508255497, -1.437158433, -0.5431748169, 

  0.5224185732, -0.006148655396, -0.5381351892, -0.1264029232}, \
{-0.2285349193, 0.5978044841, 
  0.7099844671, -0.830220449, -0.5994523393, -0.1600179795, 
  0.2957343203, -0.2560352574, 
  1.45552903, -0.9763608981}, {-0.5509826168, 0.4205191323, 
  2.021672968, 0.4834619721, -0.6738896365, -1.782509979, 0.515151609,
   0.6698301759, -1.914440159, 0.1741606405}, {1.199489342, 
  1.397342011, -0.08762926484, 0.3572575699, 0.1415520058, 
  0.2384566775, -0.598134357, -0.199506724, -0.4849505361, 
  0.1238990228}, {0.55417032, 

  0.4911786903, -0.2432415953, -1.270176719, 
  0.3143047255, -0.3256634613, 0.9347990095, 
  0.6459510591, -0.924018154, 1.091294398}, {-0.5705422396, 
  0.1740525789, -0.7607604118, -0.4584603394, -2.602648464, \
-0.08879130709, 1.550124853, 0.4472847015, 0.1335582644, 
  0.07635818615}, {1.301494963, 1.106258178, 
  0.3354845242, -1.45468913, -0.3581930843, 
  1.187368824, -0.1503588385, 0.1511637701, 2.236312191, 
  1.067101554}, {0.04525815419, 0.1181913247, 
  1.588764281, -0.7367518216, -1.79115224, -3.891936361, 2.463525431, 

  2.721622641, 0.8049086131, -0.1488657311}}
*)

(*
==> {{-2., 1.5}, {1., -0.5}}
*)

myR@Close[]

Comments

Post a Comment

Popular posts from this blog

functions - Get leading series expansion term?

Given a function f[x] , I would like to have a function leadingSeries that returns just the leading term in the series around x=0 . For example: leadingSeries[(1/x + 2)/(4 + 1/x^2 + x)] x and leadingSeries[(1/x + 2 + (1 - 1/x^3)/4)/(4 + x)] -(1/(16 x^3)) Is there such a function in Mathematica? Or maybe one can implement it efficiently? EDIT I finally went with the following implementation, based on Carl Woll 's answer: lds[ex_,x_]:=( (ex/.x->(x+O[x]^2))/.SeriesData[U_,Z_,L_List,Mi_,Ma_,De_]:>SeriesData[U,Z,{L[[1]]},Mi,Mi+1,De]//Quiet//Normal) The advantage is, that this one also properly works with functions whose leading term is a constant: lds[Exp[x],x] 1 Answer Update 1 Updated to eliminate SeriesData and to not return additional terms Perhaps you could use: leadingSeries[expr_, x_] := Normal[expr /. x->(x+O[x]^2) /. a_List :> Take[a, 1]] Then for your examples: leadingSeries[(1/x + 2)/(4 + 1/x^2 + x), x] leadingSeries[Exp[x], x] leadingSeries[(1/x + 2 + (1 - 1/x...
Post a Comment
Read more

How to thread a list

I have data in format data = {{a1, a2}, {b1, b2}, {c1, c2}, {d1, d2}} Tableform: I want to thread it to : tdata = {{{a1, b1}, {a2, b2}}, {{a1, c1}, {a2, c2}}, {{a1, d1}, {a2, d2}}} Tableform: And I would like to do better then pseudofunction[n_] := Transpose[{data2[[1]], data2[[n]]}]; SetAttributes[pseudofunction, Listable]; Range[2, 4] // pseudofunction Here is my benchmark data, where data3 is normal sample of real data. data3 = Drop[ExcelWorkBook[[Column1 ;; Column4]], None, 1]; data2 = {a #, b #, c #, d #} & /@ Range[1, 10^5]; data = RandomReal[{0, 1}, {10^6, 4}]; Here is my benchmark code kptnw[list_] := Transpose[{Table[First@#, {Length@# - 1}], Rest@#}, {3, 1, 2}] &@list kptnw2[list_] := Transpose[{ConstantArray[First@#, Length@# - 1], Rest@#}, {3, 1, 2}] &@list OleksandrR[list_] := Flatten[Outer[List, List@First[list], Rest[list], 1], {{2}, {1, 4}}] paradox2[list_] := Partition[Riffle[list[[1]], #], 2] & /@ Drop[list, 1] RM[list_] := FoldList[Transpose[{First@li...
Post a Comment
Read more

front end - keyboard shortcut to invoke Insert new matrix

I frequently need to type in some matrices, and the menu command Insert > Table/Matrix > New... allows matrices with lines drawn between columns and rows, which is very helpful. I would like to make a keyboard shortcut for it, but cannot find the relevant frontend token command (4209405) for it. Since the FullForm[] and InputForm[] of matrices with lines drawn between rows and columns is the same as those without lines, it's hard to do this via 3rd party system-wide text expanders (e.g. autohotkey or atext on mac). How does one assign a keyboard shortcut for the menu item Insert > Table/Matrix > New... , preferably using only mathematica? Thanks! Answer In the MenuSetup.tr (for linux located in the $InstallationDirectory/SystemFiles/FrontEnd/TextResources/X/ directory), I changed the line MenuItem["&New...", "CreateGridBoxDialog"] to read MenuItem["&New...", "CreateGridBoxDialog", MenuKey["m", Modifiers-...
Post a Comment
Read more