Hi David:
Anyway, Ill let you know if i can get "enhanced" working.
John
Morning John,
I pulled down the latest thredds war and have been testing a few things out. Did you get temporal aggregation working on the structured data at all? Any hints on how to structure the ncml for that?
Looks like the spatial stuff is working. Fantastic.
Thanks!
- Dave
On Mon, Mar 4, 2013 at 9:07 AM, Blodgett, David <address@hidden <mailto:address@hidden>> wrote:
OK, we'll keep an eye out for the release, thanks so much John!
No worries on the aggregation, the tiles are big enough that I think we can deal without aggregation.
On Mon, Mar 4, 2013 at 8:43 AM, John Caron <address@hidden <mailto:address@hidden>> wrote:
On 3/1/2013 12:03 PM, Blodgett, David wrote:John,
Really happy you added this stuff in, what's your plan for releasing it?
going to try to release 4.3.16 in next week or two.
You think there's any chance that tiled aggregation will work?
im reluctant to recommend using whats there currently. But doing it right is a challenge and wont be done soon.
- Dave
On Tue, Feb 26, 2013 at 8:30 AM, address@hidden <mailto:address@hidden> <address@hidden <mailto:address@hidden>> wrote:
Yes the tiling scheme is consistent for all the MODIS tiles.
Thanks,
Jason Werpy Enterprise Architect Information Dynamics USGS/EROS Sioux Falls, SD 57198 phone: 605-594-2723 <tel:605-594-2723> cell: 605-690-3576 <tel:605-690-3576> fax: 605-594-2530 <tel:605-594-2530> address@hidden <mailto:address@hidden>
NOTICE: This email may contain confidential, proprietary, or competition sensitive bid or proposal procurement information. Unauthorized disclosure of this information may carry criminal penalties as set forth in the Procurement Integrity Act, 41 U.S.C. 423, as amended. Further, the unauthorized disclosure of certain commercial information by civil servants may result in fines or imprisonment under the Trade Secrets Act (18 U.S.C. 1905). If you have received this information in error, please delete it, including all copies, and notify the sender of the error immediately.
On Feb 26, 2013, at 8:26 AM, "Blodgett, David" <address@hidden <mailto:address@hidden>> wrote:
In this case, the data is 16 day from about 2000 to present. So, on the order of 275 time steps. There are daily products and annual products though, in wich case, we are looking 12 to 4000+ time steps.
Jason, is the tile scheme you sent over used for all the different resolutions? Looking at a few of them it looks like that is the case.
- Dave
On Tue, Feb 26, 2013 at 7:48 AM, John Caron <address@hidden <mailto:address@hidden>> wrote:
Heres an image of this file.
questions about aggregations: how many time steps will be in each aggregation ? how many different aggregations (tiles?) will you serve?
On 2/24/2013 6:55 PM, David Blodgett wrote:
Sweet, thanks John. There was data in the tile, but was hard to find... BORING, I know. Sorry about that.
Here's a tile over the great lakes to give you a coast to compare locations to.
http://e4ftl01.cr.usgs.gov/MOLT/MOD13Q1.005/2000.03.05/BROWSE.MOD13A1.A2000065.h11v04.005.2008238024700.1.jpg http://e4ftl01.cr.usgs.gov/MOLT/MOD13Q1.005/2000.03.05/MOD13Q1.A2000065.h11v04.005.2008238031620.hdf http://e4ftl01.cr.usgs.gov/MOLT/MOD13Q1.005/2000.03.05/MOD13Q1.A2000065.h11v04.005.2008238031620.hdf.xml
- Dave
On Feb 24, 2013, at 6:33 PM, John Caron wrote:
Hi:
Im hacking away at this, but the datafiles i downloaded _seem_ to have nothing but missing values. Or im doing something wrong. Can you send me a file that you know has real data in it. thanks
John
On 2/24/2013 9:22 AM, David Blodgett wrote:
Hi John,
Actually, I was assuming that the sinusoidal projection was in there, doh! That was based on gdal_translate creating a geotiff with this projection info:
PROJCS["unnamed", GEOGCS["Unknown datum based upon the custom spheroid", DATUM["Not_specified_based_on_custom_spheroid", SPHEROID["Custom spheroid",6371007.181,0]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433]], PROJECTION["Sinusoidal"], PARAMETER["longitude_of_center",0], PARAMETER["false_easting",0], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]]]
There's a georeferencing section here (http://www.gdal.org/frmt_hdf4.html) that has a bit more info about gdal's implementation. Might be something helpful there? Looks like the ODL text you point to is where its coming from.
4 and 5 are questions for Jason and maybe Jordan. Guys?
- Dave
On Feb 23, 2013, at 1:22 PM, John Caron wrote:
On 2/22/2013 2:07 PM, David Blodgett wrote:
Welcome back John. Hope you had a good trip!
thanks!
I actually just spent a bunch of time with this the other day and have been meaning to summarize what I'm finding.
The first issue we are running into is your #1 below. In this case there is an external xml file that contains a lot of metadata, including information about the projection (sinusoidal), which is currently unsupported by NetCDF-Java?
1) where do you get this xml file?
2) im looking at
MOD13Q1.A2000065.h00v08.005.2008238080422.hdf MOD13Q1.A2000065.h00v08.005.2008238080422.hdf.xml
in your union subdirectory. The xml file does not seem to have projection info in it.
3) the internal ODL text (StructMetadata) has
... UpperLeftPointMtrs=(-20015109.354000,1111950.519667) LowerRightMtrs=(-18903158.834333,-0.000000) Projection=GCTP_SNSOID ProjParams=(6371007.181000,0,0,0,0,0,0,0,0,0,0,0,0) SphereCode=-1
...
which may be enough to calculate the lat/lon values. Since this is the best choice, lets investigate it before we go down any other paths.
4) Can anyone track down the code in the hyrax handler that does this? Or does the hyrax handler actually link in the hds-eos libraries ??
5) how confident are you that all the files that you want to aggregate have the same lat/lon geolocation ?
John
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.
