mfile2sci

Arguments

M_file_path

a character string which gives the path of Matlab M-file to convert

result_path

a character string which gives the directory where the result has to be written. Default value is current directory.

Recmode

Boolean flag, used by translatepaths() function for recursive conversion. Must be %F to convert a single mfile. Default value: %F

only_double

Boolean: If %T, mfile2sci() considers that numerical functions and operators (like "+") are used only with numerical data. This excludes for instance instructions like "ab" + "cd" (that then will be kept as is instead of being converted into asciimat("ab") + asciimat("cd")).

Default value: %F: All possible conversions are done.

verbose_mode

display information mode

0 :	no information displayed
1 :	information is written as comments in resulting SCI-file.
2 :	information is written as comments in resulting SCI-file and in logfile.
[3] :	information is written as comments in resulting SCI-file, in logfile and displayed in Scilab window. (Default value)

prettyprintoutput

Boolean flag, if %T generated code is beautified. Default value: %F

Description

M2SCI (and particularly mfile2sci) is Matlab M-file to Scilab function conversion tools. It tries whenever possible to replace call to Matlab functions by the equivalent Scilab primitives and functions.

To convert a Matlab M-file just enter the Scilab instruction: mfile2sci(file)

where file is a character string giving the path name of the M-file.

mfile2sci(..) will then generate three files in the same directory:

Some functions like eye, ones, size, sum,... behave differently according to the dimension of their arguments. When mfile2sci cannot infer dimensions it replaces these function call by a call to an emulation function named mtlb_<function_name>. For efficiency, these functions may be replaced by the proper scilab equivalent instructions. To get information about replacement, enter: help mtlb_<function_name> in Scilab command window

Some other functions like plot, has no straightforward equivalent in scilab. They are also replaced by an emulation function named mtlb_<function_name>.

When translation may be incorrect or may be improved mfile2sci adds a comment which begins by "//!" (according to verbose_mode)

mfile2sci() without input argument launches a GUI allowing to select a file/directory, and to configure and run the converter: mfile2sci()

Examples

// Create a simple M-file
rot90m = ["function B = rot90(A,k)"
    "if ~isa(A, ''double'')"
    "    error(''rot90: Wrong type for input argument #1: Real or complex matrix expected.'');"
    "    return"
    "end"
    "[m,n] = size(A);"
    "if nargin == 1"
    "    k = 1;"
    "else"
    "    if ~isa(k, ''double'')"
    "        error(''rot90: Wrong type for input argument #2: A real expected.'');"
    "        return"
    "    end"
    "    k = rem(k,4);"
    "    if k < 0"
    "        k = k + 4;"
    "    end"
    "end"
    "if k == 1"
    "    A = A.'';"
    "    B = A(n:-1:1,:);"
    "elseif k == 2"
    "    B = A(m:-1:1,n:-1:1);"
    "elseif k == 3"
    "    B = A(m:-1:1,:);"
    "    B = B.'';"
    "else"
    "    B = A;"
    "end"];
mputl(rot90m, TMPDIR + "/rot90.m")

// Convert it to scilab language
mfile2sci(TMPDIR + "/rot90.m",TMPDIR)

// Show the new code
editor(TMPDIR + "/rot90.sci")

// Compile it in scilab
exec(TMPDIR+'/rot90.sci')

// Call & use it
m = rand(4,2);
rot90(m,1)

See also

• translatepaths — convert a set of Matlab M-files directories to Scilab

History