help using Save and load function

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

[Geoff Hayes]

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]

save['variable_test.dat','A','b']

??? save['variable_test.dat','A','b'] | Error: Unbalanced or unexpected parenthesis or bracket.

>>

[oselu]

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]

I figured it out Geoff thank you very much

Answer 1

[Max Müller]

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

[Adam]

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]

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]

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]

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]

I figured it out thank you very much Adam