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Re: trouble saving data structure to a file
Posted:
Nov 6, 2012 10:20 AM


"Ben Ruppel" <brspam@cox.net> wrote in message news:k7b6ao$q01$1@newscl01ah.mathworks.com... > "Steven_Lord" <slord@mathworks.com> wrote in message > <k7a66a$asf$1@newscl01ah.mathworks.com>...
*snip*
> Thank you very much, your solution worked. I'm not thrilled with creating > a copy of A, B, and C since these are very large variables.
Depending on what you're doing, you may not be creating an actual copy.
http://www.mathworks.com/help/matlab/matlab_prog/memoryallocation.html
The copyonwrite behavior may save you from actually making a copy.
> How can you tell that handles.inputData is not a scalar struct variable?
Variable names in MATLAB have four specific rules:
http://www.mathworks.com/help/matlab/ref/isvarname.html
'handles.inputData' contains a period, which is not allowed in variable names. That makes it an expression that when evaluated returns a variable. If you assign the output of that expression to an identifier, that identifier must be a valid variable name.
> In Variable Editor both handles and handles.inputData are listed as "1x1 > struct". Furthermore, they are both data "things" in matlab which contain > multiple data structures and arrays and cell arrays. What makes the one > different from the other?
"Ben Ruppel" is the name you use to post to CSSM.
"The person that posts to CSSM using the address 'brspam@cox.net' " refers to you, but it is not your name. If I "evaluate" that expression by searching CSSM, I can find your actual name. [Not the best of examples, as anyone can spoof their email address, but hopefully good enough for illustration purposes.]
> Is there a way for me to make handles.inputData a scalar struct variable?
For purposes of SAVE? Not without assigning it to a variable.
> Or is the problem more that handles.inputData is an expression? If that > is the case, is there a way to point to this data structure that does not > count as an expression?
If you're worried about memory, see above.
 Steve Lord slord@mathworks.com To contact Technical Support use the Contact Us link on http://www.mathworks.com



