Saving a filename

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2 total messages Started by David Hampton Fri, 22 Jan 1993 21:57

#15

Author: David Hampton
Date: Fri, 22 Jan 1993 21:57

13 lines
1085 bytes

I have prompted a user for a data filename using 
   filename=input('Data file to read: ', 's');
and now I need to do some manipulations on the file to break it
into matrices for Matlab to load.  This is most easily done with
shell commands from my m-file, but I have to pass the string in 
"filename" to the shell so that I can manipulate the selected file
(Matlab wont export variable values to shell commands).
One way might be to save the filename as
  save tmp_file filename -ascii
but this just saves digits for the letters of the filename.  Is there
a way to save the actual ascii text to a file?

  -- Dave Hampton

Re: Saving a filename

#16

Author: Michael Maurer
Date: Fri, 22 Jan 1993 23:23

32 lines
1780 bytes

In <1jpqkjINNb6j@shelley.u.washington.edu> dhampton@carson.u.washington.edu (David Hampton) writes:

>I have prompted a user for a data filename using 
>   filename=input('Data file to read: ', 's');
>and now I need to do some manipulations on the file to break it
>into matrices for Matlab to load.  This is most easily done with
>shell commands from my m-file, but I have to pass the string in 
>"filename" to the shell so that I can manipulate the selected file
>(Matlab wont export variable values to shell commands).
>One way might be to save the filename as
>  save tmp_file filename -ascii
>but this just saves digits for the letters of the filename.  Is there
>a way to save the actual ascii text to a file?

Try using the 'eval' command in matlab:

filename=input('Data file to read: ', 's');
shcmd=['!matcvt ' filename ' > tmp.mat'];
eval(shcmd)
load tmp.mat
delete tmp.mat

where 'matcvt' is a shell command that takes as first argument the input
filename and writes a matlab file on the standard output.  Then the
results of this are available in 'tmp.mat'.

I've found 'eval' to be indispensable when interacting with the shell.

-Michael
--
______________________________________________________________________
Michael Maurer          maurer@nova.stanford.edu        (415) 723-1024

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