APL Wiki
Interface to MatLab
Contents
This interface uses builtin MatLab COM (OLE) Server
Sample APL Session
)load r2apl
d:\r2apl saved Mon Apr 06 22:10:59 2009
mlinit ⍝ initialize connection to MatLab COM server
)obs ⍝ new object MatLab is created
MatLab
mlput 2 3⍴⍳6 ⍝ put APL matrix to MatLab
Do something in MatLab
» X
X =
1 2 3
4 5 6
» sum(X)
ans =
5 7 9
» s=sum(X);
»
Back to APL
mlget 's'
5 7 9
mlexec 'surf(peaks)'And MatLab graphics window pops up:
Dyalog APL functions
mlinit
Initialize APL connection to MatLab COM Server.
∇ mlinit
[1] ⍝ version for ⎕SE
[2] '#.MatLab'⎕WC'OleClient' 'Matlab.Application'
[3] 2 ⎕NQ'#.MatLab' 'SetMethodInfo' 'PutFullMatrix'(('' 'VT_VOID')('Name' 'VT_BSTR')('Workspace' 'VT_BSTR')('pr' 'VT_ARRAY of VT_R8')('pi' 'VT_ARRAY of VT_R8'))
∇
mlexec
Execute MatLab expression and possibly return the result to APL
∇ {a}←mlexec exp
[1] ⍝ Execute MatLab expression and convert char2num
[2] ⍝R: MatLab expression ('char')
[3] ⍝e: mlexec 'surf(peaks)'
[4] ⍎(';'≠¯1↑exp)/'exp←exp,'';'''
[5] a←#.MatLab.Execute exp
∇
mlput
Put APL array into MatLab
∇ {m}mlput a;x1
[1] ⍝ Version for ⎕SE
[2] ⍝ Put APL array to MatLab
[3] ⍝R-name of variable to export from APL
[4] ⍝L-name of variable to create in MatLab
[5] ⍎(0=⎕NC'm')/'m←''X''' ⍝ Default
[6] #.MatLab.PutFullMatrix m'base'a 0
[7] a←#.MatLab.Execute m,'=real(',m,');'
∇
mlget
Get MatLab variable (matrix or vector) to APL
∇ r←mlget x;rho;Re;Im;⎕ML
[1] ⍝ version for ⎕SE
[2] ⍝ Get MatLab matrix to APL
[3] ⍝L-name of variable to import ('char')
[4] ⎕ML←3
[5] rho←#.MatLab.Execute'size(',x,')'
[6] rho←1↓(~rho∊⎕TC)⊂rho
[7] rho←{⍎¨(⍵≠' ')⊂⍵}¨rho
[8] rho←∊rho
[9] Re←rho⍴0 ⍝ Protorype variable
[10] Im←0
[11] r←↑#.MatLab.GetFullMatrix x'base'Re Im
∇Author: AlexanderSkomorokhov 2009-04-06