MODIS NDVI/EVI

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user_gis
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MODIS NDVI/EVI

by user_gis » Thu Jun 02, 2022 2:06 am America/New_York

Hello,

I'm just starting to explore the possibilities of ocssw.
Tell me, it's possible to generate a NDVI/EVI dataset from MODIS l1b data using a set of ocssw modules.

Regards,
Dmitry

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Re: MODIS NDVI/EVI

by OB.DAAC - SeanBailey » Thu Jun 02, 2022 8:54 am America/New_York

Dmitry,

Yes, the l2gen code can produce NDVI and EVI products.

Sean

user_gis
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Re: MODIS NDVI/EVI

by user_gis » Thu Jun 02, 2022 12:40 pm America/New_York

Sean,

I see a lot of arguments, but I can't figure out what I should pass to get ndvi. Could you poke me in the documentation section or just write what the command should look like.

Dmitry

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Re: MODIS NDVI/EVI

by OB SeaDAS - xuanyang02 » Thu Jun 02, 2022 12:50 pm America/New_York

Here is the help for l2gen https://seadas.gsfc.nasa.gov/help-8.2.0/processors/ProcessL2gen.html

If you do l2gen on GUI, you can add ndvi and evi in the "Selected Products" section on the Products tab

If you prefer to run l2gen on command line, you can try this --

Code: Select all

l2gen ifile="your L1B filename" l2prod="ndvi, evi"
Note that you need a geo file in the same directory with your L1B file

user_gis
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Re: MODIS NDVI/EVI

by user_gis » Fri Jun 03, 2022 12:51 am America/New_York

Many thanks,

Please, where can I find the full list of MODIS (L2) products that I can generate with l2gen.

Dmitry

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Re: MODIS NDVI/EVI

by OB SeaDAS - xuanyang02 » Fri Jun 03, 2022 10:16 am America/New_York

There is a products.xml in your ocssw/share/common that has detailed information about the products that l2gen can generate.

Or you can do

Code: Select all

get_product_info -l
or

Code: Select all

get_product_info -r

user_gis
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Re: MODIS NDVI/EVI

by user_gis » Mon Jun 06, 2022 2:56 am America/New_York

Many thanks.

Dmitry

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