Saving a variable
in [Matlab]
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From: Steven Lord on 24 Jun 2010 09:50 "Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message news:hvvdnt$e9b$1(a)fred.mathworks.com... > Dear Richard! > >> variable = input('Enter variable name: '); >> ... >> finalv = averagev' >> finalv = genvarname(finalv); >> SaveStruct.(finalv) = finalv; > > Nope. Don't forget: variable = input('Enter variable name: ', 's'); Without the 's', INPUT will attempt to evaluate the expression the user enters. If that expression is the name of a variable that doesn't yet exist, you will receive an error. The 's' flag prevents INPUT from evaluating the expression; instead it will just return the answer as a string. Then proceed as Jan said. > finalName = genvarname(variable); > SaveStruct.(finalName) = finalv; -- Steve Lord slord(a)mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ To contact Technical Support use the Contact Us link on http://www.mathworks.com
From: Walter Roberson on 24 Jun 2010 12:22 Richard Wylde wrote: > save(UserFileName, SaveStruct, '-struct'); Apologies, that should have been save(UserFileName, 'SaveStruct', '-struct');
From: Richard Wylde on 25 Jun 2010 04:39 "Steven Lord" <slord(a)mathworks.com> wrote in message <hvvnqg$b3q$1(a)fred.mathworks.com>... > > "Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message > news:hvvdnt$e9b$1(a)fred.mathworks.com... > > Dear Richard! > > > >> variable = input('Enter variable name: '); > >> ... > >> finalv = averagev' > >> finalv = genvarname(finalv); > >> SaveStruct.(finalv) = finalv; > > > > Nope. > > Don't forget: > > variable = input('Enter variable name: ', 's'); > > Without the 's', INPUT will attempt to evaluate the expression the user > enters. If that expression is the name of a variable that doesn't yet > exist, you will receive an error. The 's' flag prevents INPUT from > evaluating the expression; instead it will just return the answer as a > string. > > Then proceed as Jan said. > > > finalName = genvarname(variable); > > SaveStruct.(finalName) = finalv; > > -- > Steve Lord > slord(a)mathworks.com > comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ > To contact Technical Support use the Contact Us link on > http://www.mathworks.com > I'm still struggling... ??? Error using ==> save The -STRUCT option must be followed by the name of a scalar structure variable. Error in ==> average at 14 save(outvariable, 'SaveStruct', '-struct', 'S'); From the following: % 22nd June 2010 % Function to average data invariable = input('Enter variable name: '); outvariable = input('Enter variable name: ','s'); insize = size(invariable); numinsize = insize(1); period = input('Enter current data interval (mins): '); time = input('Enter period to average data over (mins): '); divider = time/period; averagev = mean(reshape(invariable,divider,[])); finalv = averagev' finalName = genvarname(outvariable); SaveStruct.(finalName) = finalv; save(outvariable, 'SaveStruct', '-struct');
From: dpb on 25 Jun 2010 08:08 Richard Wylde wrote: .... > I'm still struggling... > > ??? Error using ==> save > The -STRUCT option must be followed by the name of a scalar structure > variable. > > Error in ==> average at 14 > save(outvariable, 'SaveStruct', '-struct', 'S'); > .... 'S' isn't a variable, it's a string... --
From: Steven Lord on 25 Jun 2010 09:56
"Richard Wylde" <rwylde(a)gmail.com> wrote in message news:i01pvv$31k$1(a)fred.mathworks.com... > "Steven Lord" <slord(a)mathworks.com> wrote in message > <hvvnqg$b3q$1(a)fred.mathworks.com>... *snip* > I'm still struggling... > > ??? Error using ==> save > The -STRUCT option must be followed by the name of a scalar structure > variable. > > Error in ==> average at 14 > save(outvariable, 'SaveStruct', '-struct', 'S'); The struct array that you created is named SaveStruct, right? The error message indicates that you need to _follow_ the -struct option with the name of the struct; the name should not appear _before_ the -struct option. save(outvariable, '-struct', 'SaveStruct'); Also note that this will create a MAT-file whose name is the contents of the outvariable variable -- so if you enter the string 'richard' at the prompt for the name of the output variable, this will create the file richard.mat containing the variable richard. If this is not what you want, you may want to change the name of the file in which you save the data. -- Steve Lord slord(a)mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ To contact Technical Support use the Contact Us link on http://www.mathworks.com |