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f2matlab

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f2matlab

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16 Jun 2004 (Updated )

Converts basic fortran90 source code to MATLAB source code.

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Description

Most recent version at:
http://engineering.dartmouth.edu/~d30574x/consulting/consultingIndex.html

4. F2MATLAB CAPABILITIES: f2matlab is aimed at converting numerical Fortran90 code to Matlab m-files. Accordingly, only basic data types and constructions are recommended. f2matlab can handle: all numeric types (handled by Matlab interpreter) most string functions comparisons, branches, loops, types, etc. basic read/write/print statements (if it's not too fancy...) 5. F2MATLAB LIMITATIONS: f2matlab can not handle some features of fortran90 yet. These include: can't handle difficult IO and read and write statements, goto (of course), equivalence, and pointers.

Acknowledgements

This file inspired Gauss Hermite.

MATLAB release MATLAB 7 (R14)
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Comments and Ratings (22)
13 Mar 2012 Dikla

Hi
I have a problem installing this program on Matlab R2011b

Can you provide an explantion of using those files?

12 Jul 2011 Jin  
30 Jun 2011 bruce

Ran the code and immediately received the following error:
??? Index exceeds matrix dimensions.

Error in ==> f2matlab at 1055
funstr={funstr{segmentStarts(whichsub):segmentStarts(whichsub+1)-1}}';

Don't know enough about the code to solve this problem.

11 May 2011 AlexanderKospach

I´m trying to convert as well a frotran code to matlab code. I always get the errormessage

---------------------------------------
??? Too many outputs requested. Most likely cause is missing [] around
left hand side that has a comma separated list expansion.

Error in ==> findendSub_f at 80
sublist{slLen+1,7}=sublist{temp6,1};

Error in ==> f2matlab at 899
[sublist,funstr,funstrnumbers,funstrnumbers_b,funstrnumbers_e,funstrwords,funstrwords_b,funstrwords_e,fs_good]=findendSub_f([],sublist,s,funstr,funstrnumbers,funstrnumbers_b,funstrnumbers_e,funstrwo
Error in ==> test at 2
f2matlab('MarqStepEX_P.for');
---------------------------------------

and i have no idea want it means. thx for any help

28 Mar 2011 Md mahbub Mishu

I am using this f2matlab file but when I call the function to convert my fortran90 code to .m file, it says "bad cell reference"
I am giving my fortran code below:
C
C RANKINE SOURCE WAVES TRANSFERRED TO FORM KELVIN ANGLE
C (UNIT STRENGTH, UNIT VOLUME)
DIMENSION FSPANL(20,40), FSP2(30,50),
+ A(40,20),B(40,20),H(40,20),
+ AK(40,20),BK(40,20),HK(40,20)
DATA IR,DEPTH/20,20.0/
C
C
C
DO 100 I=1,20
DO 100 J=1,40
100 FSPANL(I,J)=0.0
C
C
C
DELTAR=20.0/FLOAT(IR)
DO 200 I1=1,IR
R=DELTAR*FLOAT(I1)
RK=DELTAR*FLOAT(I1)+0.5
THETA=2.0*3.141592/FLOAT(I1*4)
ITHETA=I1*4
DO 300 I2=1,ITHETA
ANGLE=THETA*FLOAT(I2-1)
A(I2,I1)=R*COS(ANGLE)
AK(I2,I1)=RK*COS(ANGLE)
B(I2,I1)=R*SIN(ANGLE)
BK(I2,I1)=RK*SIN(ANGLE)
300 CONTINUE
C
DO 350 I2=1,ITHETA
R3D=SQRT((A(I2,I1)-A(1,I1))**2+(B(I2,I1)-B(1,I1))**2+DEPTH**2)
R3DK=SQRT((AK(I2,I1)-AK(1,I1))**2
+ +(BK(I2,I1)-BK(1,I1))**2+DEPTH**2)
H(I2,I1)=R3D**2/(2.0*9.81*(R3D**3))
HK(I2,I1)=-R3DK**2/(2.0*9.81*(R3DK**3))
350 CONTINUE
C
DO 360 I2=1,ITHETA
A(I2,I1)=A(I2,I1)+3.0*R
AK(I2,I1)=AK(I2,I1)+3.0*R
B(I2,I1)=B(I2,I1)+10.0
BK(I2,I1)=BK(I2,I1)+10.0
360 CONTINUE
C
C
C
DO 1000 I2=1,ITHETA
C
I=1
J=1
ICOUNT=1
COL=1.0
IF (A(I2,I1).GT.40.0) GO TO 910
400 IF (A(I2,I1).GT.COL) GO TO 500
J=ICOUNT
GO TO 600
500 COL=COL+1.0
ICOUNT=ICOUNT+1
GO TO 400
600 CONTINUE
C
ICOUNT=1
ROW=1.0
IF (B(I2,I1).GT.20.0) GO TO 910
IF (B(I2,I1).LT.0.0) GO TO 910
700 IF (B(I2,I1).GT.ROW) GO TO 800
I=ICOUNT
GO TO 900
800 ROW=ROW+1.0
ICOUNT=ICOUNT+1
GO TO 700
C
910 H(I2,I1)=0.0
900 FSPANL(I,J)=FSPANL(I,J)+H(I2,I1)
C
I=1
J=1
ICOUNT=1
COL=1.0
IF (AK(I2,I1).GT.40.0) GO TO 915
405 IF (AK(I2,I1).GT.COL) GO TO 505
J=ICOUNT
GO TO 605
505 COL=COL+1.0
ICOUNT=ICOUNT+1
GO TO 405
605 CONTINUE
C
ICOUNT=1
ROW=1.0
IF (BK(I2,I1).GT.20.0) GO TO 915
IF (BK(I2,I1).LT.0.0) GO TO 915
705 IF (BK(I2,I1).GT.ROW) GO TO 805
I=ICOUNT
GO TO 905
805 ROW=ROW+1.0
ICOUNT=ICOUNT+1
GO TO 705
C
915 HK(I2,I1)=0.0
905 FSPANL(I,J)=FSPANL(I,J)+HK(I2,I1)
C
1000 CONTINUE
200 CONTINUE
C
C
C
DO 3000 I=1,30
DO 3000 J=1,50
3000 FSP2(I,J)=0.0
C
DO 4000 I=1,20
DO 4000 J=1,40
IP5=I+5
JP10=J+10
4000 FSP2(IP5,JP10)=FSPANL(I,J)
C
C
C
DO 1100 I=1,30
DO 1100 J=1,50
X=0.5+1.0*(J-1)
Y=0.5+1.0*(I-1)
Z=FSP2(I,J)
WRITE(15,5000) X,Y,Z
5000 FORMAT(1X,3F10.6)
1100 CONTINUE

C
C
STOP
END
if anybody can help me to convert this into .m file, I will appreciate his or her effort.
Thanks
Mishu

21 Feb 2011 Alan

Hi,

How do I install f2matlab on Vista? I cannot get the "INSTALL" file to execute, there is no 'Run' command when I right-click on it.

Thanks,

26 Nov 2010 Erkan Tiryaki

it would be great if I could fix the error points with a guide..

14 Jul 2010 pink

how to use it, can be given one example of step by step process of using f2matlab

17 Feb 2010 Andre Guy Tranquille  
19 Nov 2009 Hastiepen

I know nothing about Fortran, and had to convert some code into Matlab. The conversions that f2matlab made helped me immensely to give me a starting point. Many thanks!

02 Nov 2009 Martin Richard

Very useful package indeed. Thank you.

19 Apr 2009 Qun HAN

It's great to know this great tool is still imporved.

08 Apr 2008 anonymous anonymous

Hello
I have tried to convert the where statement applied to a 2D array to matlab and it seems f2matlab does not translate well.
Best Regards
Eduardo

program ed_example
integer B(10, 2)

B(1:10, 1) = 0
B(1:10, 2) = 1
where (B(:,:)>0)
B(:,:) = B(:,:) + 9
endwhere
end program

Translating:
f2matlab('ed_example.f')

ans =
b([1:10], 1) = 0;
b([1:10], 2) = 1;
fmask=(b(:,:)>0);
b(fmask,:) = b(fmask,:) + 9;
endwhere;

Running:
>> b(fmask,:) = b(fmask,:) + 9
??? Index exceeds matrix dimensions.

18 Mar 2008 Fat Hidalgo

I tried to run the code but I keep getting the error:

??? Input argument "filename" is undefined.

Error in ==> f2matlab at 101
if exist(filename,'file')==2

I think this is because Matlab does not like when functions are defined in the script. I should define the function outside of the script in a separate .m file, but when I try to do so, I just get more errors. It's hard for to to see what I need to cut from the original program to define the function separately. Anybody with comments on this please email me.

28 Dec 2007 thangjam singh

very good

05 Dec 2006 rakesh reddy govindapur

good work

12 Nov 2006 aws ataallah  
08 Nov 2006 Thomas Clark

The actual utility is really useful... When it works.
However, (I think due to the ambiguity between row and column vectors in Fortran) I found a lot of problems in translation, where it just ground to a halt.

In a sense that's to be expected; but there is almost no error handling to cope with that kind of situation- If I could just find out which line of the source code was causing the trouble, I'd be able to comment that section out in the F90 file and manually translate those particular lines. As the f2matlab code is largely uncommented it's havoc to try and trace which lines of code cause the translation problem.

Don't get me wrong; this can be extremely useful code - and clearly a lot of effort has gone into it's development. However, it needs to be a bit more transparent to help us get over the patches where the ambiguity of Fortran lets the translation down.

23 Jun 2006 Anthony Kendall

Though it's not perfect (because of the ambiguity of the GOTO, READ, and WRITE functions in FORTRAN, they don't convert correctly), this converted about 1000 lines of code for me that I was then able to debug and convert to MATLAB format in about 8 hours. Not bad, considering the code was written by someone else!

25 Apr 2006 Malin Premaratne

This is a very useful function

29 Mar 2006 peter spellucci  
07 Mar 2006 shahab ghomi  
Updates

Added module support.

16 Nov 2004

Enhancements, bug fixes.

30 Nov 2004

Enhancements, bug fixes.

09 Dec 2004

Enhancements, bug fixes.
Also added support for simple IO -- read/write/print statments inclusing formatting.

15 Dec 2004

Enhancements, bug fixes.
Added support for implied do loops.

24 Jan 2005

Some bug fixes.

09 Feb 2005

bug fixes, more robust

01 Mar 2005

01/20/05 - some bug fixes
02/08/05 - added try catch's
02/24/05 - added some support for fortran string comparisons, date_and_time
02/25/05 - added some support for functions as arguments

15 Mar 2005

More bug fixes. Support for strings as cells. I/O enhancements.

15 Mar 2005

Many bugs is last dist.

22 Mar 2005

03/09/05 - put fix() around declared integers
03/14/05 - some fixes, loop var now correct on exit from loop
03/21/05 - rewrote some parts to deal with var decs better
save (or declared with a value) vars in fortran are now persistent

30 Mar 2005

Bug fixes.

12 Dec 2005

Some bug fixes. Some enhancements.

14 Dec 2005

Some improvements and fixes.

16 May 2006

Fixed some bugs.
Added matlab reserve word variables changes.

06 Jun 2006

Changed description

31 Aug 2006

Speed improvement.

Bug fixes.

Module capability better.

06 Apr 2007

Bugfixes, added functionality.

16 Oct 2007

updated description

05 Nov 2008

Some documentation updates and bug fixes.

04 Feb 2009

bug fixes, features added, more robust

01 May 2009

Several bug fixes and enhancements. Include files, types, etc.

01 Aug 2012

Added link to most recent version off site.

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