Function capability in Matlab

Dear all,

I have 30 source data in my matlab folder, data1.dat,data2.dat..data30.dat.. I have the exact code for each one of these source code. I thought to create one function for all then when running it from the command to specify which data source i want to run !! I did

 function work ('filename')
                   mywork = importdata (filename)% before it was data1.dat..

but its not correct, how can I achieve this?

Answer 1

[Nirmal Gunaseelan]

The argument list to the function should be the variable names themselves and not a string (within quotes) of the variable name. So in your case, the code should be:

function work (filename)
   mywork = importdata (filename)

And, while calling the function, the argument should be a string. That is,

work('data1.dat')

[Susan]

thanks, It worked after putting the string while calling it :)

Answer 2

[Jan]

 function work(filename)   % No quotes!
 mywork = importdata (filename)

[Paulo Silva]

the variable mywork should be returned by the function :)

[Jan]

@Paulo: Does "but its not correct, how can I achieve this?" mean, that Susan wants to achieve an incorrect code?

[Paulo Silva]

maybe I don't know lol

Answer 3

[Paulo Silva]

%just in case you discard that function and just want to import all files
for n=1:30
MyWork{n} = importdata(['data' num2str(n) '.dat']); %you might not need the '.dat'
end

[Jan]

"['data' n '.dat']" is not correct, better: sprintf('data%ddat', n)

[Paulo Silva]

why not? it works just fine in this case, I'm confused :/

[Paulo Silva]

ohhh now I see, I forgot the conversion from double to string, silly me

['data' num2str(n) '.dat']