Read multiple netcdf files with variable names

I got around 1000 netcdf-files that needs to be run in the same matlab-script and have problems getting them loaded. The files are named in a logical format, like this:

model_variable_period_area

where model=model1,model2,model3..

variable=variable1,variable2,variable3...

period=period1...

area=area1..

So every model, has multiple variables, which again has multiple periods, and so on, for example could a filename be:

model3_variable2_period3_area4

But there will be exceptions, cases where the file doesn't exist, for example if period3 only exist together with model1, so that the filename

model2_variable2_period3_area4

wouldn't exist, and Matlab wouldn't be able to find it.

So now to my question - I have tried several methods, but I don't know how to do this. I'm using ncread to load the files, and I've tried something like this:

model = genvarname({'model1', 'model2', 'model3', 'model4'});
variable = genvarname({'variable1','variable2','variable3',variable4'});
area = genvarname({'area1','area2','area3','area4'});

if model = 'model1';
   period = genvarname({'period3'});
else period = genvarname({'period1','period2','period3','period4'});
end

Input_file = ncread(sprintf('%d_%d_%d_%d',model,variable,period,area),'varname');

Thanks in advance for your help!

Answer 1

[Ashish Uthama]

You could think of something along these lines:

(air code, as in I havent tested it)

modelNames = {'m1, m2};
varNames   = {'a','b'};

for mInd = 1:numel(modelNames)
  fileName = modelnames{mInd};
  for vInd = 1:numel(varNames)

       if(exist(fileName,'f'))  % please see doc, I think there is a syntax option to check for the existence of a file using its name
            try
               varName = varNames{vInd};
               data = ncread(fileName,varName);
            catch ALL % better to see one failure when the variable does not exist, use lasterr and check for the specific exception issued.
                disp(['Could not read ' filname' for ' varName]);
            end
       end
    end
  end