Search found 32 matches

by LP DAAC - afriesz
Tue Nov 22, 2022 10:55 am America/New_York
Forum: Questions/Comments
Question: Query about GEDI time quantum
Replies: 4

Re: Query about GEDI time quantum

deace , Would you be able to share a link to the ICESAT-1 campaign table? I'm curious what it looks like. I don't think there is a 'table' containing the revisit intervals. Is there any reason why Earthdata Search doesn't at least get you partially there? You can search for you area of interest usi...
by LP DAAC - afriesz
Tue Nov 22, 2022 10:21 am America/New_York
Forum: Questions/Comments
Question: how to extract the exact the shape of GEDI shots
Replies: 5

Re: how to extract the exact the shape of GEDI shots

deace , I think what you’re looking for is the GEDI L1B Geolocated Waveform Data ( https://lpdaac.usgs.gov/products/gedi01_bv002/ ). This product provides geolocated corrected and smoothed waveforms, which when plotted gives you the ‘pulse shape’. The GEDI_L1B_V2_Tutorial.ipynb tutorial in https://...
by LP DAAC - afriesz
Tue Nov 08, 2022 12:53 pm America/New_York
Forum: Questions/Comments
Question: CMR has no entries for MOD13Q1.061 files at LP DAAC
Replies: 6

Re: CMR has no entries for MOD13Q1.061 files at LP DAAC

zhan.li & earthengine_urs , As was mentioned before, the LP DAAC is in a state where on-prem data is actively being moved to the NASA Earthdata Cloud. When those on-prem (i.e., provider=LPDAAC_ECS) collections are moved to the cloud (i.e., provider=LPCLOUD) they receive a new concept ID, AND th...
by LP DAAC - afriesz
Wed Aug 31, 2022 8:55 am America/New_York
Forum: Questions/Comments
Question: Query about GEDI time quantum
Replies: 4

Re: Query about GEDI time quantum

deace , It is not clear to me what you’re asking for exactly. GEDI continuously collects lidar samples globally from the International Space Station. If you’re trying to find and access data that spatially and temporally intersect with you research parameters, I would recommend using Earthdata Sear...
by LP DAAC - afriesz
Wed Aug 17, 2022 8:43 pm America/New_York
Forum: Questions/Comments
Question: Unable to download data from the 30-Meter SRTM Tile Downloader
Replies: 11

Re: Unable to download data from the 30-Meter SRTM Tile Downloader

@edwardsch ,

Have you tried from another browser? Even after clearing my cache in Chrome is still get an error, but when I try from Firefox I'm able to download the tile.
by LP DAAC - afriesz
Wed Aug 17, 2022 4:18 pm America/New_York
Forum: Questions/Comments
Question: MODIS data exposed through CMR STAC API
Replies: 1

Re: MODIS data exposed through CMR STAC API

valpesendorfer , The LP DAAC currently has two provider endpoints within the CMR STAC API. One for "LPDAAC_ECS" ( https://cmr.earthdata.nasa.gov/stac/LPDAAC_ECS/ ) and one for "LPCLOUD" ( https://cmr.earthdata.nasa.gov/stac/LPCLOUD/ ). The LPDAAC_ECS endpoint will contain metada...
by LP DAAC - afriesz
Wed Aug 17, 2022 4:04 pm America/New_York
Forum: Questions/Comments
Question: How to calculate NDVI from MODIS MOD09GQ?
Replies: 2

Re: How to calculate NDVI from MODIS MOD09GQ?

@5479584.asdf, I was able to replicate what you are seeing in QGIS. I don’t see a problem other than you should be quality filtering these data before you calculate the NDVI. The MODIS granule you downloaded will have a “QC_250m_1” layer in it that you should use to quality filter your data. The QA ...
by LP DAAC - afriesz
Tue Aug 16, 2022 1:25 pm America/New_York
Forum: Questions/Comments
Question: Reprojection
Replies: 4

Re: Reprojection

rkshah , From what I can tell, what you are seeing is what is expected. The rows and columns of the grid will change, as well as the pixel count, when you transform from the Sinusoidal grid to your UTM projection. Any tool or utility that reprojects will exhibit this. Is there anything else that le...
by LP DAAC - afriesz
Tue Aug 16, 2022 12:03 pm America/New_York
Forum: Questions/Comments
Question: Reprojection
Replies: 4

Re: Reprojection

rkshah , "But while counting the pixel, both gives different results." If you are seeing a different number for rows and columns or total pixels after reprojecting from sinusoidal, that is to be expected. If you are seeing data values that we not in the source file, that suggests that nea...
by LP DAAC - afriesz
Thu Jul 21, 2022 3:52 pm America/New_York
Forum: Questions/Comments
Question: Verify that your username and password are correct in .netrc
Replies: 13

Re: Verify that your username and password are correct in .netrc

@ouaretwa ,

It looks like your .netrc file might be in the wrong directory. Could you move your .netrc file to your user profile directory (e.g., C:\Users\ouaretw\.netrc)? Let us know if that works.