Do you have software code that can read TRMM files in Matlab?
Here is a sample program in Matlab that will read a TRMM 3B42 daily binary file. % This program is to read a TRMM 3B42 daily binary file fid = fopen(‘3B42_daily.2009.05.31.6.bin’, ‘r’); a = fread(fid, ‘float’,’b’); fclose(fid) data = a’; count = 1; for i_lat = 1:400 for j_lon = 1:1440 lat = -49.875 + 0.25*(i_lat – 1) if j_lon <= 720 lon = 0.125 + 0.25*(j_lon - 1) else lon = 0.125 + 0.25*(j_lon - 1) - 360.0 end daily_rain_total = data(count) count = count + 1; end end Here is a sample program to read a TRMM Level 3 HDF4 data file in Matlab.