touchstone format to ABCD matrix

Hello,

I'd like to know how to convert s parameters, that are in touchstone format, in ABCD matrix in Matlab

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file =' measured.s2p' ;
h = read(rfdata.data,file);
z0=50;
abcd_params = s2abcd(h,z0); this command does not work..

Thanks in advance...

you have forgotten to add 's2p" as extension...
It should be h=read(rfdata.data,'measured.s2p')

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Hello ..

Actually I get the error message after the conversion to abcd matrix command:
s_params=read(rfdata.data,file);
>> z0 = 50;
>> abcd_params =s2abcd(s_params,z0)
Error using CheckNetworkData (line 40)
S_PARAMS must be numeric.

Error in s2abcd (line 18)
[freq, s_params] = CheckNetworkData(s_params, '2N', 'S_PARAMS');