Thread Subject: simple syntax problem

This is a simple syntax problem, but I can’t find it in
Matlab.

I need to run and load different mat files into my
workspace as program runs.
for example in iteration 1 (say i=1)
   load myfile1 params
iteration 2
   load myfile2 params

In programming language we simply use something like
   fileName = ['myfile' '1']
then fileName will be equal to myfile1, but if we use
   load fileName
then Matlab complains the fileName does not exist.

I had done it before, but I cannot remember it now. There
is a combination of prefix to tell Matlab that the
contents of fileName should be used not fileName itself.

anyone knows the syntax?

Thanks,
Hossein

"hossein darbandi" <hosseinb@ece.ubc.ca> wrote in message
news:fnaip3$92v$1@fred.mathworks.com...
> This is a simple syntax problem, but I can’t find it in
> Matlab.
>
> I need to run and load different mat files into my
> workspace as program runs.
> for example in iteration 1 (say i=1)
> load myfile1 params
> iteration 2
> load myfile2 params
>
> In programming language we simply use something like
> fileName = ['myfile' '1']
> then fileName will be equal to myfile1, but if we use
> load fileName
> then Matlab complains the fileName does not exist.

Use the function form described in HELP LOAD instead of the command form:

load(fileName)

--
Steve Lord
slord@mathworks.com

In article <fnaip3$92v$1@fred.mathworks.com>,
hossein darbandi <hosseinb@ece.ubc.ca> wrote:
>In programming language we simply use something like
> fileName = ['myfile' '1']
>then fileName will be equal to myfile1, but if we use
> load fileName
>then Matlab complains the fileName does not exist.

>I had done it before, but I cannot remember it now.

load(fileName);
--
   "Okay, buzzwords only. Two syllables, tops." -- Laurie Anderson

"hossein darbandi" <hosseinb@ece.ubc.ca> wrote in message
<fnaip3$92v$1@fred.mathworks.com>...
> This is a simple syntax problem, but I can’t find it in
> Matlab.
>
> I need to run and load different mat files into my
> workspace as program runs.
> for example in iteration 1 (say i=1)
> load myfile1 params
> iteration 2
> load myfile2 params
>
> In programming language we simply use something like
> fileName = ['myfile' '1']
> then fileName will be equal to myfile1, but if we use
> load fileName
> then Matlab complains the fileName does not exist.
>
> I had done it before, but I cannot remember it now. There
> is a combination of prefix to tell Matlab that the
> contents of fileName should be used not fileName itself.
>
> anyone knows the syntax?
>
> Thanks,
> Hossein
>

If you're sure that your datafile myfile1.mat already exists
in the current directory, ...

%load x,y in myfilei.mat (i = 1, 2 ...)
load(sprintf('myfile%d',i),'params');


Otherwise, you shoule use fullfile function to build full
filename (directories and filename).

HTH
Anh Huy Phan
RIKEN - BSI