Search found 214 matches

by OB SeaDAS - dshea
Thu Feb 04, 2021 9:32 am America/New_York
Forum: All Questions/Comments
Question: How to automatically choose and download ancillary data when run ocssw with parfile
Replies: 3

How to automatically choose and download ancillary data when run ocssw with parfile

There is a program called "getanc" that will download the ancillary files and create a par file for you given the input file.  On the command line run this:getanc COMS_GOCI_L1B_GA_20110402001644.he5 ancillary_data.dbEncountered more than 1 Scene Start time tag. Using 1st value.Encount...
by OB SeaDAS - dshea
Thu Jan 28, 2021 11:27 am America/New_York
Forum: All Questions/Comments
Question: The value is nan for chlor_a from MODIS
Replies: 3

The value is nan for chlor_a from MODIS

Looks like this is a night time file.  All pixels PRODFAIL and HISOLZEN.  L2gen flagged it as :day_night_flag = "Night"

can't get chl at night.

don
by OB SeaDAS - dshea
Wed Jan 27, 2021 8:54 am America/New_York
Forum: All Questions/Comments
Question: Chlorophyll concentration OCI VS Chlorophyll Concentration OCX Algorithm
Replies: 3

Chlorophyll concentration OCI VS Chlorophyll Concentration OCX Algorithm

The size of the OCI and OCX are both float, so they will be the same size in an L2 file.  The only way the L2 files could be a different size is if more products were put on one of the files.  You can use "ncdump -h" on the command line or look at the list of bands using SeaDAS.

don
by OB SeaDAS - dshea
Fri Oct 23, 2020 1:54 pm America/New_York
Forum: All Questions/Comments
Question: Tiled SIN Grid for Ocean Color Products
Replies: 3

Tiled SIN Grid for Ocean Color Products

Not sure about L3 bin files that you get from LADS. If you are using bin files you get from our ocean color website or are produced by our programs l2bin or l3bin, you can use l3mapgen to make the GEOTIFF files.  Using l3mapgen you can pick your projection, output format, geographic limits (nor...
by OB SeaDAS - dshea
Fri Sep 11, 2020 12:14 pm America/New_York
Forum: All Questions/Comments
Question: HICO L-2 Processing
Replies: 11

HICO L-2 Processing

As I recall the working dir that the GUI uses is the directory that the ifile is in.  I believe that was an attempt to keep me sane when SeaDAS was launched by the Finder on a Mac or some linux desktop launcher. I would have to go back and check the Java code that I wrote many years ago to be s...
by OB SeaDAS - dshea
Wed Sep 09, 2020 12:31 pm America/New_York
Forum: All Questions/Comments
Question: Runing GEO and L1B processed in parallel
Replies: 3

Runing GEO and L1B processed in parallel

I guess I would take the easy way out.  Make a directory for each parallel process and move a set of files to each directory.  Process each directory with one process.  When done move all the files back to the original directory.  Moving a file just changes a pointer to the actua...
by OB SeaDAS - dshea
Wed Aug 26, 2020 3:14 pm America/New_York
Forum: All Questions/Comments
Question: OLI L2 data
Replies: 6

OLI L2 data

l2flags is a bit field.  Your example breaks down like this:

decimal = 2112
hex = 0x0840
binary = 0000 1000 0100 0000

That means bit 6 and bit 11 are on.  The first bit is on the right and you start numbering the bits at 0

bit 6 = 64 = COASTZ
bit 11 = 2048 = TURBIDW

don
by OB SeaDAS - dshea
Thu Jul 30, 2020 9:13 am America/New_York
Forum: All Questions/Comments
Question: gpt.sh reprojection issue
Replies: 3

gpt.sh reprojection issue

Your XML file looks like you are asking for 9 millimeter wide pixels.  That would be too many pixels, which you do not have enough memory to store.  You are trying to allocate about 5 PetaBytes of memory.

don
by OB SeaDAS - dshea
Mon Jul 27, 2020 9:46 am America/New_York
Forum: All Questions/Comments
Question: l3mapgen/smigen redux
Replies: 11

l3mapgen/smigen redux

Look at the function:

get_minmax_rowcol()
file: smigen.cpp
line: 2324

Looks like line 2331 does truncate.  Unfortunately, I like the way l3mapgen does it better.

don