Search found 52 matches

by LP DAAC - afriesz
Fri Sep 01, 2023 9:15 am America/New_York
Forum: Questions/Comments
Question: get lat lon from Viirs VNP09GA
Replies: 6

Re: get lat lon from Viirs VNP09GA

ger.smit , I'm still not quite sure if I'm understanding your objective, but maybe this will help you get started. I've started to update a VIIRS Python resource we have to support VNP09GA version 2 (https://git.earthdata.nasa.gov/projects/LPDUR/repos/nasa_viirs_surfacereflectance/browse/VIIRS_V2_S...
by LP DAAC - afriesz
Tue Aug 15, 2023 10:02 am America/New_York
Forum: Questions/Comments
Question: MODIS SIN Grid data(MOD16A2) visualization.
Replies: 7

Re: MODIS SIN Grid data(MOD16A2) visualization.

@kmmrao ,

Have you been able to explore NASA's AppEEARS (https://appeears.earthdatacloud.nasa.gov/) as @ogsahin mentioned? I think it would help. Another option outside of Python is to use the GDAL Warp (https://gdal.org/programs/gdalwarp.html) utility.
by LP DAAC - afriesz
Tue Aug 15, 2023 9:54 am America/New_York
Forum: Questions/Comments
Question: get lat lon from Viirs VNP09GA
Replies: 6

Re: get lat lon from Viirs VNP09GA

@ger.smit ,

Could you give more details about what you are trying to accomplish? Are you asking how extract pixels based on Lat/Lon or how to extract coastlines from an image (VNP09GA tile)? Also, please pass along any scripts or resources that you've been referencing.
by LP DAAC - afriesz
Thu Jun 22, 2023 11:08 pm America/New_York
Forum: Questions/Comments
Question: GEDI integrated into AppEEARS?
Replies: 1

Re: GEDI integrated into AppEEARS?

moniquegreco , We currently do not have a timeline for integrating GEDI into AppEEARS. We’d be happy to provide any suggestions or recommendations for working with GEDI data. Please let us know what data you are planning to work with, and what you’d like to with it. We do have some resources that m...
by LP DAAC - afriesz
Wed Jun 14, 2023 3:52 pm America/New_York
Forum: Questions/Comments
Question: Corresponding waveform for selected shots in L2 products
Replies: 2

Re: Corresponding waveform for selected shots in L2 products

chidi_mma , Could you tell us more about what variables you are planning to work with in the GEDI L2A product? The GEDI L1A data product is the only product with waveform data while the L2A data products contains RH metrics. Getting waveform data for a GEDI shot is a bit involved and indeed require...
by LP DAAC - afriesz
Fri Jun 09, 2023 5:04 pm America/New_York
Forum: Questions/Comments
Question: GEDI Coverage vs. Full Power Beams
Replies: 5

Re: GEDI Coverage vs. Full Power Beams

chidi_mma , If you haven’t already, I’d encourage you to read the GEDI manuscript written by Ralph Dubayah and others (2020) - https://doi.org/10.1016/j.srs.2020.100002. That may help with some of your questions. What GEDI beams (power vs coverage) you decide to use is dependent on your research re...
by LP DAAC - afriesz
Fri Jun 09, 2023 4:55 pm America/New_York
Forum: Questions/Comments
Question: Unable to access HLSS30.020 on aws s3
Replies: 10

Re: Unable to access HLSS30.020 on aws s3

Hey All, For those having issues with boto3 in Python when trying to download from and list objects in S3, please make sure you check the following: 1. Make sure you are working from an cloud compute instance running in AWS us-west-2 2. Make sure your credentials are not expired. Temporary S3 creden...
by LP DAAC - afriesz
Thu Jun 08, 2023 10:27 am America/New_York
Forum: Questions/Comments
Question: Slow Access to HLS (HLSL30.v2.0, HLSS30.v2.0)
Replies: 6

Re: Slow Access to HLS (HLSL30.v2.0, HLSS30.v2.0)

mitchbon , I was able to run the notebook you shared. As you mentioned, it works but it’s relatively slow. Unfortunately, we don’t know why there’s such a difference in speed, but we will look it and see if something on our side we can do to improve the performance. In the meantime, there are alter...
by LP DAAC - afriesz
Fri Jun 02, 2023 3:22 pm America/New_York
Forum: Questions/Comments
Question: Direct access to S3 data from outside EC2
Replies: 1

Re: Direct access to S3 data from outside EC2

lesimppa , The notebook you refer to will only work if you are executing the notebook in AWS region us-west-2. If you are trying to access data that resides in Earthdata Cloud from a machine outside AWS, e.g. from your laptop, you have to use the HTTPS endpoint. This notebook gives a quick Python e...
by LP DAAC - afriesz
Thu May 04, 2023 9:45 am America/New_York
Forum: Questions/Comments
Question: Extract height metrics from vector points
Replies: 2

Re: Extract height metrics from vector points

@rosettastoned ,

How are you planning to work with the GEDI data? Through an interface like ArcGIS or QGIS, or programmatically using Python?