help using Save and load function

2014 8 20
1 个回答
更新时间：2014 8 20
2 次查看（30 天）

0 个投票

Hello I would like to save a variable into a .dat file using the command window but my save function is now working. I have followed the example from my tutorial book but they are not working.
I would like to save the file and then load it again from the command window. I am currently using R2010a.
all assistance is greatly appreciated thank you

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Geoff Hayes
Geoff Hayes 2014-8-20
oselu - please clarify what you mean by they are not working. What errors or warnings are you observing? What example are you following? Please include the code.
oselu
oselu 2014-8-20
save['variable_test.dat','A','b']
??? save['variable_test.dat','A','b'] | Error: Unbalanced or unexpected parenthesis or bracket.
>>
oselu
oselu 2014-8-20
x=1:2:10
save ('"C:\Users\user\Documents\MATLAB\test.dat','x','-ascii')
??? Error using ==> save
Unable to write file "C:\Users\user\Documents\MATLAB\test.dat: Invalid argument.
>>
oselu
oselu 2014-8-20
I figured it out Geoff thank you very much

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回答（1 个）

Max Müller
Max Müller 2014-8-20
编辑：Max Müller 2014-8-20

0 个投票

I had this Problem once before (i guess). Try to save ur Variable in a .mat file and then load it again. Just try it. Loading form a .dat file is somehow complicated.
X = 1
save('Test.mat','X') % save into the file: Test.mat
clear % deletes all the Variables it the Workspace
load('Test.mat','X') % gives back ur Variable X

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Adam
Adam 2014-8-20
You might want to insert just
clear X
in the middle of there instead of 'clear' in case you try it in the middle of a workspace you don't want to lose!
Apart from that I would agree that .mat files are ideal for saving and reloading into Matlab itself.
oselu
oselu 2014-8-20
Thank you Adam, It worked. I would like to know how to save it in a .dat file. would it simply be that i just change the file extension from['test.mat'] to ['test.dat']
oselu
oselu 2014-8-20
I tried it out
save('test.dat','y') >> load('test.dat','y')
??? Error using ==> load Number of columns on line 1 of ASCII file C:\Users\user\Documents\MATLAB\test.dat must be the same as previous lines.
oselu
oselu 2014-8-20
a =
2
>> save ('"C:\Users\user\Documents\MATLAB\test.dat','a','-ascii') ??? Error using ==> save Unable to write file "C:\Users\user\Documents\MATLAB\test.dat: Invalid argument.
>>
oselu
oselu 2014-8-20
I figured it out thank you very much Adam

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2014-8-20

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