Search found 141 matches

by OB WebDev - norman
Tue Jan 10, 2017 11:07 am America/New_York
Forum: Home
Question: l3mapgen georeferencing
Replies: 3

l3mapgen georeferencing

Well, here is one inelegant way to get the corner coordinates you seek.  I am usingGMT in my example since that is what I am most familiar with, but the same logic shouldwork using any other map projection software like Proj4.# First, naively specify a Lambert azimuthal equal area projection wi...
by OB WebDev - norman
Thu Nov 13, 2014 5:07 pm America/New_York
Forum: Home
Question: HICO l2 projection problem
Replies: 6

HICO l2 projection problem

Hi Jun,I had a look at the HICO scene you refer to and find thegeolocation information has no unexpected corner anomalies.I am attaching a 3-band image I made from the data withoutusing SeaDAS.  We'll need to investigate further.In the mean time, can you post the exact steps you usedto make...
by OB WebDev - norman
Mon Apr 28, 2014 4:08 pm America/New_York
Forum: Home
Question: HICO Level-2 Data
Replies: 1

HICO Level-2 Data

Hi Bruce,

No official level-2 HICO products from our shop yet.
See this post.

http://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?pid=22790

Regards,
Norman
by OB WebDev - norman
Fri Jan 17, 2014 10:15 am America/New_York
Forum: Home
Question: HICO level 1b data - latitudes/longitudes not quite correct
Replies: 7

HICO level 1b data - latitudes/longitudes not quite correct

We of the Ocean Biology Processing Group arealso relatively new to the HICO data stream.Since we are a small group, we appreciatewhen anyone from the science communitycalls out issues that we may not have noticedwith HICO (or any of our supported remotesensing platforms).  Please, continue to l...
by OB WebDev - norman
Fri Jan 17, 2014 9:49 am America/New_York
Forum: Home
Question: HICO level 1b data - latitudes/longitudes not quite correct
Replies: 7

HICO level 1b data - latitudes/longitudes not quite correct

Andy,When we first started working with these data, the coordinateswere often off by tens of kilometers.  Since then the HICO expertshave improved the geolocation considerably, but it is still notgood to within a pixel.My understanding is that it is very difficult to get accurate attitudeinform...
by OB WebDev - norman
Fri Jan 17, 2014 9:38 am America/New_York
Forum: Home
Question: HICO file contents
Replies: 1

HICO file contents

Hi Jasmine,When we first set up HICO processing here at the OBPG,we were inadvertently including a copy of the level-0data in the level-1B files we were making.  This substantiallyincreased the file sizes unnecessarily.  The /data/hicodataset is now no longer included in our L1B products.C...
by OB WebDev - norman
Thu Jan 16, 2014 4:40 pm America/New_York
Forum: Home
Question: HICO level 1b data - true_color SDS
Replies: 8

HICO level 1b data - true_color SDS

Andy,

It turns out that our group runs the code
that makes these files, but we are not
the authors of the code and do not have
access to the sources.  We have requested
the source code, but the HICO team is
understandably more concerned with getting
the sensor turned back on at the moment.

Norman
by OB WebDev - norman
Thu Jan 16, 2014 4:11 pm America/New_York
Forum: Home
Question: HICO level 1b data - true_color SDS
Replies: 8

HICO level 1b data - true_color SDS

Yes, those metadata are misleading since they
give the wrong order of the dimensions.  Given
the way the data are organized, the dataspace
dimensions should read ( 3, 2000, 512 ).  I will
pass this along to the L1B-file creators in hopes
of a fix.

Regards,
Norman
by OB WebDev - norman
Thu Jan 16, 2014 1:54 pm America/New_York
Forum: Home
Question: HICO level 1b data - true_color SDS
Replies: 8

HICO level 1b data - true_color SDS

P.S.  Note that our browse images are not reproductions
       of the /images/true_color data set.
by OB WebDev - norman
Thu Jan 16, 2014 1:48 pm America/New_York
Forum: Home
Question: HICO level 1b data - true_color SDS
Replies: 8

HICO level 1b data - true_color SDS

Hi Andy,The "/images/true_color" data set is storedband sequentially.  The nine panels you seewould result if you tried to view the data viaa format that expected the red, green, and bluevalues for each pixel to be adjacent to each other.I am unfamiliar with IDL, but I do often work w...