Hi everybody, I am processing reproject ocean image. I used epoc tool (epoc level 3). Now I want to reproject for all image file in a folder. I used dialog_pickfile() function but it can not. Could you tell me the solution to do that? Thank you The below is raw coding : pro test_epoc_level_3 compile_opt idl2 envi, /restore_base_save_files envi_batch_init, log_file='batch.txt' fname ='C:\Users\Hoa\Desktop\Demo\T20130012013008.L3m_8D_SST_4' output_path = 'C:\Users\Hoa\Desktop\Demo\' convert_oc_l3_smi_data, fname=fname, output_path=output_path, r_fid=r_fid print, r_fid end