storing data set

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Pankaj
Pankaj 2012 年 2 月 15 日
コメント済み: Panagiotis Papias 2022 年 2 月 11 日
my code returns a 200X200 matrix which has a structure in each of its element. Can I save/store it somewhere and load it later. The system seems to lose it when i close matlab. if i save the variable as .mat file in my workspace it cannnot bring it up later.

回答 (2 件)

carmen
carmen 2012 年 2 月 16 日
sure :)
ok my answer was kind of an overkill, sorry! let "a" be your 200x200 variable and "savea.mat" the file you want to save to. then the command that should do the job is
save('savea','a')
load('savea','a')
what i used above is the sprintf function that allowed me to save to dynamic file and foldernames. in this case sprintf had 3 arguments, "'%s\\%s\\filename'" ,"pwd" and "'foldername'". the first is a string that is interpreted where the %s places the content of the second an third argument in that position. pwd is a matlab command that returns the current matlab folder, let it be "C:\matlab". then:
foldername='fancyfolder'
save(sprintf('%s\\%s\\savea',pwd,'foldername'),'a');
should save the variable a into the file C:\matlab\fancyfolder\savea.mat note that you need the backslash and the "%" sign have special meaning within the sprintf function.
does this help?
  6 件のコメント
KUMAR ADITYA
KUMAR ADITYA 2017 年 5 月 9 日
Thanks carmen.....helped me a lot even after 5 years......!!!
Panagiotis Papias
Panagiotis Papias 2022 年 2 月 11 日
Guess what is the year 2022 and still somebody can find it really useful :)

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carmen
carmen 2012 年 2 月 15 日
I onec used
save(sprintf('%s\\%s\\filename',pwd,'foldername'),'varname');
load(sprintf('%s\\%s\\filename',pwd,'foldername'),'varname');
where pwd returns the current matlab workspace folder. if this does not help you i dont know :(
  1 件のコメント
Pankaj
Pankaj 2012 年 2 月 15 日
Hi Carmen, thanks for your help - but i am not able to understand the command - can you please spare a min to explain : %%s, \\filename, 'foldername', 'varname'.
tried doc but didn't help

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