how to save and plot different matrix?

Hi all,

I've written the following code to get the matrix of SST (sea surface temperature), but also I want to get the plot of each sst matrix that should be extracted from each file (92:140) = 49. also I need to save get each matrix alone and save all of 49 in one .mat file but different variable.

I donno where I am mistaken. any help would be appreciated. Thanks

 for i=92:140;
%         filename=[files(i).name];
%             disp(['Processing ', files(i).name]);
%             sst  = ncread(filename,'sea_surface_temperature');
%             lon  = ncread(filename,'lon');
%             lat  = ncread(filename,'lat');
%             sst = sst';

            idxlon  = find(lon>lonmin & lon<lonmax);
            goodlon = lon(idxlon);
            idxlat  = find(lat>latmin & lat<latmax);
            goodlat = lat(idxlat);

            subset_sst = sst(idxlat,idxlon); %this is the data i want

            y=files(i).name(1:4);
            dd=files(i).name(7:8);
            mm=files(i).name(5:6);
            DT=strcat(dd,'/',mm,'/',y);
            DAY=[DAY;DT];  
            figure 
            imagesc(goodlon,goodlat,subset_sst) %plot this line separtly
            axis xy tight
  end