[OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-08 Thread Timmie
 Sadly not yet. But there is more sadness to it. The code lives in
 JGrass and the current uDig version has a library mismatch that
 doesn't make the use of netcdf from JGrass possible. We are planning
 to solve this for the 1.2.1 release of uDig, but there is no strict
 timeline for that right now.
 Anyways the netcdf part in JGrass is actively maintained and you can
 indeed browse the maps through time, as well as the non-map parts

(http://jgrasstechtips.blogspot.com/2010/01/netcdf-in-jgrass-non-spatial-part.html).
 I already had some requests in the uDig and JGrass lists to solve the
 problem, I will as soon as possible.
I installed JGrass from:
http://dev.fsc.bz.it/download/get_file.php?id=425

But how do I get the netCDF viewer now?

Regards

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Re: [OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-08 Thread andrea antonello
 Sadly not yet. But there is more sadness to it. The code lives in
 JGrass and the current uDig version has a library mismatch that
 doesn't make the use of netcdf from JGrass possible. We are planning
 to solve this for the 1.2.1 release of uDig, but there is no strict
 timeline for that right now.
 Anyways the netcdf part in JGrass is actively maintained and you can
 indeed browse the maps through time, as well as the non-map parts

 (http://jgrasstechtips.blogspot.com/2010/01/netcdf-in-jgrass-non-spatial-part.html).
 I already had some requests in the uDig and JGrass lists to solve the
 problem, I will as soon as possible.
 I installed JGrass from:
 http://dev.fsc.bz.it/download/get_file.php?id=425

 But how do I get the netCDF viewer now?

That is the problem, that older version didn't have it and the new one
doesn't work because of libs mismatch.

I have a version that we used for a course that should have the netcdf
stuff in it, perhaps I could upload it somewhere if you want to try
it?


Andrea





 Regards

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[OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-08 Thread Timmie
Just as a note:
There is a recent discussion on the GRASS user list:
http://thread.gmane.org/gmane.comp.gis.grass.user/36922

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[OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-08 Thread Timmie
 I have a version that we used for a course that should have the netcdf
 stuff in it, perhaps I could upload it somewhere if you want to try
 it?
Sure, would be great.
I think your implementation (blog post) is just great and I'd love to see it
implemented in a development version.
Climate modelling and spatial analysis together in one program. Good.

The access to climate data in netCDF offered by QGIS+GRASS by interfacing GDAL
is somewhat inferior. We do not just want to display rasters but explore the
time component as well.

Thanks.

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Re: [OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-08 Thread andrea antonello
 I have a version that we used for a course that should have the netcdf
 stuff in it, perhaps I could upload it somewhere if you want to try
 it?
 Sure, would be great.
 I think your implementation (blog post) is just great and I'd love to see it
 implemented in a development version.
 Climate modelling and spatial analysis together in one program. Good.

Ok, I put a linux and a windows version at this link: http://tinyurl.com/32d6svr
You will find a proper udig version + the update site that installs
JGrass with netcdf support (as local update site).
CF netcdfs are supported. You best import the netcdf through the udig
data import wizard.
To see non-gridded data, rightclick on the dataset and under
operations you have a way to open the data viewer.
For more, bug reports, comments, whatever, please jump into the uDig
list. Don't want to get too offtopic here.

 The access to climate data in netCDF offered by QGIS+GRASS by interfacing GDAL
 is somewhat inferior. We do not just want to display rasters but explore the
 time component as well.

Yes, that was our first aim in the google sommer of code project.

Ciao
Andrea



 Thanks.

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[OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-07 Thread Timmie
Hello Andrea,
thanks for answering.

 I think it doesn't if you have small local datasets, I have never been
 able to zoom in.
But at least it works...
 
 Sadly not yet. But there is more sadness to it. The code lives in
 JGrass and the current uDig version has a library mismatch that
 doesn't make the use of netcdf from JGrass possible. We are planning
 to solve this for the 1.2.1 release of uDig, but there is no strict
 timeline for that right now.
I understand.

 Anyways the netcdf part in JGrass is actively maintained and you can
 indeed browse the maps through time, as well as the non-map parts

(http://jgrasstechtips.blogspot.com/2010/01/netcdf-in-jgrass-non-spatial-part.html).
Does that mean that if I install the current version of JGrass I'd get the
functionality you implemented?

 I already had some requests in the uDig and JGrass lists to solve the
 problem, I will as soon as possible.
Great.

The target for the 4D GIS use is to visulaise modeling result in combination
with more feature data. The analysis and modelling is done with other tools
Note: I currently haven't settled on any system. I slightly favour the QGIS
system because of its possibility to code a plugin in python.

Anyway, thaks for your initiative and effort.

Regards,
Timmie

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[OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-07 Thread Timmie
 Sadly not yet. But there is more sadness to it. The code lives in
 JGrass and the current uDig version has a library mismatch that
 doesn't make the use of netcdf from JGrass possible. We are planning
 to solve this for the 1.2.1 release of uDig, but there is no strict
 timeline for that right now.
 Anyways the netcdf part in JGrass is actively maintained and you can
 indeed browse the maps through time, as well as the non-map parts

(http://jgrasstechtips.blogspot.com/2010/01/netcdf-in-jgrass-non-spatial-part.html).
one question:
how do you intend to deal with aggregated data sets?

E.g. 10-years average for every month of the year.

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Re: [OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-07 Thread Mike Toews
On 7 September 2010 04:11, Timmie timmichel...@gmx-topmail.de wrote:
 how do you intend to deal with aggregated data sets?
 E.g. 10-years average for every month of the year.

For all calculations on NetCDF files (including your example), you can
try NCO[1]. These command-line tools require extensive documentation
reading, and I recommend keeping a log of notes for commands that
work. Many useful examples are also provided in the documentation.

On 7 September 2010 03:16, andrea antonello andrea.antone...@gmail.com wrote:
 The NASA tool Panoply (http://www.giss.nasa.gov/tools/panoply/) does this 
 quite
 nicely.

 I think it doesn't if you have small local datasets, I have never been
 able to zoom in.

I used ncview[2] to view and produce images for animations used in
presentations (using imagemagick). All my NC files were in a small
region using UTM coordinates, so many viewers didn't know how to show
the data.

[1] http://nco.sourceforge.net/
[2] http://meteora.ucsd.edu/~pierce/ncview_home_page.html (this needs
X and needs to be compiled -- no binaries or packages available)

-Mike
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Re: [OSGeo-Discuss] Re: Support of 4D (time based) data sets

2010-09-07 Thread cruiserad
have you looked at geozui4d? it's done by dr Colin Ware, U. New Hampshire. the 
link is here:
http://vislab-ccom.unh.edu/GeoZui4D/
Note: i had troubble trying to load in ubuntu




- Original Message -
From: Mike Toews mwto...@gmail.com
To: OSGeo Discussions discuss@lists.osgeo.org
Cc: timmichel...@gmx-topmail.de
Sent: Tue, 07 Sep 2010 14:27:30 - (UTC)
Subject: Re: [OSGeo-Discuss] Re: Support of 4D (time based) data sets

On 7 September 2010 04:11, Timmie  wrote:
 how do you intend to deal with aggregated data sets?
 E.g. 10-years average for every month of the year.

For all calculations on NetCDF files (including your example), you can
try NCO[1]. These command-line tools require extensive documentation
reading, and I recommend keeping a log of notes for commands that
work. Many useful examples are also provided in the documentation.

On 7 September 2010 03:16, andrea antonello  wrote:
 The NASA tool Panoply (http://www.giss.nasa.gov/tools/panoply/) does this 
 quite
 nicely.

 I think it doesn't if you have small local datasets, I have never been
 able to zoom in.

I used ncview[2] to view and produce images for animations used in
presentations (using imagemagick). All my NC files were in a small
region using UTM coordinates, so many viewers didn't know how to show
the data.

[1] http://nco.sourceforge.net/
[2] http://meteora.ucsd.edu/~pierce/ncview_home_page.html (this needs
X and needs to be compiled -- no binaries or packages available)

-Mike
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