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However, in the l1_oli.c file, the conversion of the Landsat 8 DN value to radiance(Lt) uses the following formula: l1rec->Lt[ipb] = (data->buf[ip] * data->refl_scale[ib] + data->refl_offset[ib]) * l1rec->Fo[ib] / PI; Due to the fact that the first half of this formula converts DN values to reflecta...

I encountered a problem while using l2gen to process the collection2 level 1 product of Landsat 5 7. Because V2025.1 currently does not support collection 2 for Landsat 57, the source code is still related to collection 1. Therefore, is the formula for converting DN values to Lt applicable to collec...

Thank you! It's worked!
Thanks again!

Hello,
I want to batch download anc file for modis_aqua, https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Ancillary/Aqua-MODIS/2002/, How can I batch download data for all years？

THANKS!

Maybe something worry in band 9.

Hello, Sean. I can now confirm that there is an issue with this code. I downloaded SeaDAS 8.3 and OCSSW V2022.3 on Ubuntu 22.04, and processed an image of Landsat 8 collection 2, with the ID LC08_L1TP_119038_20130325_20200913_02_T1. I added the rho_cirrus option when running l2gen, but the output fo...

Thanks, Sean. I know that band 9 is used as rho_cirrus, but the premise is that we first read the data of band 9 into data->buf_tile_row. However, when nbands=7, this code only reads the data of band 8 (and even has not finished reading it, as the data volume of band 8 is twice that of other bands)....

I found that this problem occurred because I modified the pixel values of the band 9 image when I was processing Landsat 8. However, I noticed that these modifications were not being read. Could you please confirm if this problem really exists?

Hello, I've encountered some issues recently while processing Landsat 8 Collection 2 data using the source code. It seems like Landsat 8 band 9 is not being read? While examining the l1_oli.c code, I noticed that band 9 is not being read during the band reading process. It's also possible that my un...

Thank you very much, I have already downloaded the latest source code through this method. Your work is really great and every detail is done perfectly. Thank you again Sean.