save filename by values using a variable

Hai..!!

I would like to save my output filenames based on the values from a variable. For example, I managed to get the name as "Y_3601_file1.tif" where as I need the name to be "Y_2000-01-01_file1.tif". As you can see from the code that the dates are in desired format as a variable "time3". It would be highly appreciable if someone help me to fix this.

clear, clc, close all

ncfiles = dir('*.nc') ;
N = length(ncfiles) ;
for i = 1:N
ncfile = ncfiles(i).name ;
      %% Variables %%
      lat = double(ncread(ncfile,'lat')) ;
      lon = double(ncread(ncfile,'lon')) ;
      time = double(ncread(ncfile,'time')) ;
      var = double(ncread(ncfile,'var')) ;
      %% Time Conversion %%
      time2 = daynoleap2datenum(time, 1700, 'dt');
      time3 = datetime(time2, 'InputFormat','dd-MMM-yyyy HH:mm:ss', 'Format','dd-MM-yyyy');
      %% specific date selection 
        for j = 3601:length(time)
            A = squeeze(var(:,:,j))*3.154e+7;
            A = A.';
      %% Write nc data to geotiff
      R = georasterref('RasterSize',size(A),'LatitudeLimits',[min(lat),max(lat)],........
          'LongitudeLimits',[min(lon),max(lon)]);
      tiffile = strcat('Y_',num2str(j),'_',ncfile,'.tif') ;
      geotiffwrite(tiffile,A,R)    
        end
end

Answer 1

[KSSV]

for j =  for j = 3601:length(time)
    thedate = string(time3(j)) ; 
    tiffile = strcat('Y_',thedate,'_',ncfile,'.tif') ;
end

[Hariharan Siva]

Thank you. It works.

Answer 2

[Bjorn Gustavsson]

Ok, that should be possible. Someting like this:

% First lets get you the date-string-component in your desired format (guessing year-month-day-Hour-Minute)
time3 = datetime(time2, 'InputFormat','dd-MMM-yyyy HH:mm:ss', 'Format','yyyy_mm_dd_HH_MM');
% Then for the file-name:
tiffile = strcat('Y_',char(time3),'_',ncfile,'.tif');

HTH

[Hariharan Siva]

Thank you. It helped me.