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From: Walter Roberson on 19 Jul 2010 12:35
Maxx Chatsko wrote:
> Walter Roberson <roberson(a)hushmail.com> return
>> You can represent the tab character in an sprintf format by the
>> character pair \t
>>
>> Each sprintf call needs () around its arguments. You can include
>> several lines of error dialog by using {} around the list.
>>
>> errordlg({sprintf('No %s data on file. Troubleshoot:', tab) ...
>> sprintf('\t1) Update PSL Master Sheet)' });
>>
>>
>> I am not certain, though, that \t will produce more than a small bit
>> of empty space for errordlg() purposes.
>
> I'm sorry, tab is a variable that represents an acquisition type
> (fci, rci, or swir). The problem is with char(10). It doesn't seem to
> like being on either side of (),{}...

char(10) is the ascii newline character. If you are trying to break up
the lines to be presented, then just do as I did above, construct a cell
array of strings. Just remove the \t from my mini-example and run that
as as test (after defining "tab" of course.)
From: Andy on 19 Jul 2010 12:48
> The images are opened based upon the user selection in a listbox. Since multiple images are opened (up to 15) and have their spectral data averaged and displayed on the same plot, isn't it the best way???
> Maxx

I seem to be misunderstanding something. Where does Excel come in? Where are the users incorrectly typing in file names?

As for this:

errordlg(sprintf{'No %s data on file. Troubleshoot:',tab} char(10)...
{' 1) Update PSL Master Sheet with latest data' char(10)...
' 2) Check spelling of filenames in PSL Master Sheet ' char(10)...
}sprintf{'Please uncheck %s box to continue.',tab}),'FCI Data Error');

There are many syntax errors here. sprintf is a function, so a call to it looks like sprintf(args), not sprintf{args}. errordlg takes a string or cell array of strings, whereas you seemed to concatenate a string with a cell array. Also, using a cell array, you don't need explicit char(10) to get line breaks. It should look something like the following:

errordlg({ sprintf('No %s data on file. Troubleshoot:', tab) ;
' 1) Update PSL Master Sheet with latest data';
' 2) Check spelling of file names in PSL Master Sheet';
sprintf('Please uncheck %s box to continue.', tab)});

From: Maxx Chatsko on 19 Jul 2010 13:01
Walter Roberson <roberson(a)hushmail.com>
> char(10) is the ascii newline character. If you are trying to break up
> the lines to be presented, then just do as I did above, construct a cell
> array of strings. Just remove the \t from my mini-example and run that
> as as test (after defining "tab" of course.)

Right char(10) gets a new line and was in the code before I got to it. Apparently I don't need it. Thanks Walter and Andy.
Maxx

PS xlsread works fine and has nothing to do with the problem
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