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Posted to dev@sis.apache.org by Martin Desruisseaux <ma...@geomatys.fr> on 2012/10/06 16:55:39 UTC
OGC meeting next week
Hello again
I will be at the OGC meeting next week, so I may be less active
regarding SIS for the coming week. If anyone know someone who is coming
at this OGC meeting and think it may be good to talk about SIS, please
let my know. There is 107 peoples registered up to date.
Martin
Re: OGC meeting next week
Posted by "Mattmann, Chris A (388J)" <ch...@jpl.nasa.gov>.
Thanks Martin, I will ask around here and see what the NASA reps are, but I will plan on trying
to attend.
Thanks!
Cheers,
Chris
On Oct 8, 2012, at 10:15 AM, Martin Desruisseaux wrote:
> Le 09/10/12 01:59, Mattmann, Chris A (388J) a écrit :
>> Great to hear about the California meetings, and yes I would love to come!
>>
>> How do I do that? :)
>
> According the listing at [1], NASA is already an OGC member. Actually I just realized that NASA is one of the 4 "strategic" OGC members, which means that its has strong vote power. We need to find who is the contact person at NASA for OGC - I will ask the question tomorrow to OGC staff - and then you can ask to that person.
>
> It is also possible to come as individual, but if possible I guess that it would be worth to ask first to the contact person of your institute?
>
> Martin
>
>
> [1] http://www.opengeospatial.org/ogc/members
>
Re: OGC meeting next week
Posted by Martin Desruisseaux <ma...@geomatys.fr>.
Le 09/10/12 01:59, Mattmann, Chris A (388J) a écrit :
> Great to hear about the California meetings, and yes I would love to come!
>
> How do I do that? :)
According the listing at [1], NASA is already an OGC member. Actually I
just realized that NASA is one of the 4 "strategic" OGC members, which
means that its has strong vote power. We need to find who is the contact
person at NASA for OGC - I will ask the question tomorrow to OGC staff -
and then you can ask to that person.
It is also possible to come as individual, but if possible I guess that
it would be worth to ask first to the contact person of your institute?
Martin
[1] http://www.opengeospatial.org/ogc/members
Re: OGC meeting next week
Posted by "Mattmann, Chris A (388J)" <ch...@jpl.nasa.gov>.
Hi Martin,
Great to hear about the California meetings, and yes I would love to come!
How do I do that? :)
Cheers,
Chris
On Oct 8, 2012, at 9:18 AM, Martin Desruisseaux wrote:
> Le 07/10/12 00:15, Mattmann, Chris A (388J) a écrit :
>> Thanks Martin! Yeah would be hard for me to make a trip that far this soon but
>> I'll be interested to know the outcome and safe travels to you!
>
> Thanks, I'm in Seoul now :-). The next meeting will be in California, at ESRI [1] in January. If you have an opportunity to come there, that would be nice.
>
> Martin
>
> [1] http://www.opengeospatial.org/event/1301tc
>
Re: OGC meeting next week
Posted by Martin Desruisseaux <ma...@geomatys.fr>.
Le 07/10/12 00:15, Mattmann, Chris A (388J) a écrit :
> Thanks Martin! Yeah would be hard for me to make a trip that far this soon but
> I'll be interested to know the outcome and safe travels to you!
Thanks, I'm in Seoul now :-). The next meeting will be in California, at
ESRI [1] in January. If you have an opportunity to come there, that
would be nice.
Martin
[1] http://www.opengeospatial.org/event/1301tc
Re: OGC meeting next week
Posted by "Mattmann, Chris A (388J)" <ch...@jpl.nasa.gov>.
Thanks for the debrief here, Martin!
Cheers,
Chris
On Oct 8, 2012, at 9:15 AM, Martin Desruisseaux wrote:
> Le 07/10/12 00:20, Adam Estrada a écrit :
>> Yes! Please let the folks there know about SIS! I am interested to hear what feedback you receive.
>
> Sure, I will do. I have a "GeoAPI tutorial" cession tomorrow; I will mention SIS there.
>
> In the main time, there is a quick report about the today meeting. We had only one technical session (there will be more tomorrow). This session was about geometries in Simple Features. Geometries are defined by the ISO 19107 specification, and represented as Java interfaces in the org.opengis.geometry package and sub-packages [1]. However this specification is reputed complex, and the Java interfaces are still in the "pending" part of GeoAPI despite 2 or 3 implementation attempts. The "Simple Feature" specification was used to define a simpler geometric model, but it had more limitations (mostly 2D Cartesian). There is some interesting ideas floating around for "completing Simple Feature" or "simplifying ISO 19107" (depending on the point of view). It may be too early for telling much more, but it could impact the way geometries would be implemented in Apache SIS. It may be a reason for not rushing too much on geometry and focus on other parts (e.g. coverage) in the main time.
>
> One observation about the Coordinate Reference Model defined in the ISO 19111 specification (and consequently the model expressed by GeoAPI interfaces): this is a model describing quite extensively the reference system metadata, but gives few information about how to calculate geometric properties (distances, angles, etc.). Actually there is a package for the coordinate systems [2], but each each leaf interfaces (CartesianCS, EllipsoidalCS, etc.) is basically empty. For the EllipsoidalCS for instance, we can't do anything without the axis length, which are stored elsewhere (indirectly in the GeodeticDatum). For gravity-related geoid, there is no information at all. Maybe some adaptations would be considered necessary. In such cases, we will need to revisit the Java interfaces and see how we could eventually incorporate the changes.
>
> Martin
>
>
> [1] http://www.geoapi.org/geoapi-pending/apidocs/org/opengis/geometry/coordinate/package-summary.html
> [2] http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/cs/package-summary.html
>
Re: OGC meeting next week
Posted by Martin Desruisseaux <ma...@geomatys.fr>.
Le 07/10/12 00:20, Adam Estrada a écrit :
> Yes! Please let the folks there know about SIS! I am interested to hear what feedback you receive.
Sure, I will do. I have a "GeoAPI tutorial" cession tomorrow; I will
mention SIS there.
In the main time, there is a quick report about the today meeting. We
had only one technical session (there will be more tomorrow). This
session was about geometries in Simple Features. Geometries are defined
by the ISO 19107 specification, and represented as Java interfaces in
the org.opengis.geometry package and sub-packages [1]. However this
specification is reputed complex, and the Java interfaces are still in
the "pending" part of GeoAPI despite 2 or 3 implementation attempts. The
"Simple Feature" specification was used to define a simpler geometric
model, but it had more limitations (mostly 2D Cartesian). There is some
interesting ideas floating around for "completing Simple Feature" or
"simplifying ISO 19107" (depending on the point of view). It may be too
early for telling much more, but it could impact the way geometries
would be implemented in Apache SIS. It may be a reason for not rushing
too much on geometry and focus on other parts (e.g. coverage) in the
main time.
One observation about the Coordinate Reference Model defined in the ISO
19111 specification (and consequently the model expressed by GeoAPI
interfaces): this is a model describing quite extensively the reference
system metadata, but gives few information about how to calculate
geometric properties (distances, angles, etc.). Actually there is a
package for the coordinate systems [2], but each each leaf interfaces
(CartesianCS, EllipsoidalCS, etc.) is basically empty. For the
EllipsoidalCS for instance, we can't do anything without the axis
length, which are stored elsewhere (indirectly in the GeodeticDatum).
For gravity-related geoid, there is no information at all. Maybe some
adaptations would be considered necessary. In such cases, we will need
to revisit the Java interfaces and see how we could eventually
incorporate the changes.
Martin
[1]
http://www.geoapi.org/geoapi-pending/apidocs/org/opengis/geometry/coordinate/package-summary.html
[2]
http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/cs/package-summary.html
Re: OGC meeting next week
Posted by Adam Estrada <es...@gmail.com>.
Yes! Please let the folks there know about SIS! I am interested to hear what feedback you receive.
a
On Oct 6, 2012, at 11:15 AM, Mattmann, Chris A (388J) wrote:
> Thanks Martin! Yeah would be hard for me to make a trip that far this soon but
> I'll be interested to know the outcome and safe travels to you!
>
> Please tell everyone you know there about Apache and SIS :) and invite
> them to join up!
>
> Cheers,
> Chris
>
> On Oct 6, 2012, at 8:01 AM, Martin Desruisseaux wrote:
>
>> Hello Chris
>>
>> Le 06/10/12 23:57, Mattmann, Chris A (388J) a écrit :
>>> Thanks for the FYI here. Where/when is the OGC meeting is there a link to the agenda?
>>
>> The agenda is there: http://www.opengeospatial.org/event/1210tcagenda
>>
>> The location is there: http://www.ogcseoultcpc.info/
>> A bit far in theory, but actually not far for me right now since I will go there from Japan :)
>>
>> Martin
>>
>
>
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Chris Mattmann, Ph.D.
> Senior Computer Scientist
> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
> Office: 171-266B, Mailstop: 171-246
> Email: chris.a.mattmann@nasa.gov
> WWW: http://sunset.usc.edu/~mattmann/
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Adjunct Assistant Professor, Computer Science Department
> University of Southern California, Los Angeles, CA 90089 USA
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
Re: OGC meeting next week
Posted by "Mattmann, Chris A (388J)" <ch...@jpl.nasa.gov>.
Thanks Martin! Yeah would be hard for me to make a trip that far this soon but
I'll be interested to know the outcome and safe travels to you!
Please tell everyone you know there about Apache and SIS :) and invite
them to join up!
Cheers,
Chris
On Oct 6, 2012, at 8:01 AM, Martin Desruisseaux wrote:
> Hello Chris
>
> Le 06/10/12 23:57, Mattmann, Chris A (388J) a écrit :
>> Thanks for the FYI here. Where/when is the OGC meeting is there a link to the agenda?
>
> The agenda is there: http://www.opengeospatial.org/event/1210tcagenda
>
> The location is there: http://www.ogcseoultcpc.info/
> A bit far in theory, but actually not far for me right now since I will go there from Japan :)
>
> Martin
>
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Chris Mattmann, Ph.D.
Senior Computer Scientist
NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
Office: 171-266B, Mailstop: 171-246
Email: chris.a.mattmann@nasa.gov
WWW: http://sunset.usc.edu/~mattmann/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Re: OGC meeting next week
Posted by Martin Desruisseaux <ma...@geomatys.fr>.
Hello Chris
Le 06/10/12 23:57, Mattmann, Chris A (388J) a écrit :
> Thanks for the FYI here. Where/when is the OGC meeting is there a link to the agenda?
The agenda is there: http://www.opengeospatial.org/event/1210tcagenda
The location is there: http://www.ogcseoultcpc.info/
A bit far in theory, but actually not far for me right now since I will
go there from Japan :)
Martin
Re: OGC meeting next week
Posted by "Mattmann, Chris A (388J)" <ch...@jpl.nasa.gov>.
Hi Martin,
Thanks for the FYI here. Where/when is the OGC meeting is there a link to the agenda?
Cheers
Chris
On Oct 6, 2012, at 7:55 AM, Martin Desruisseaux wrote:
> Hello again
>
> I will be at the OGC meeting next week, so I may be less active regarding SIS for the coming week. If anyone know someone who is coming at this OGC meeting and think it may be good to talk about SIS, please let my know. There is 107 peoples registered up to date.
>
> Martin
>
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Chris Mattmann, Ph.D.
Senior Computer Scientist
NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
Office: 171-266B, Mailstop: 171-246
Email: chris.a.mattmann@nasa.gov
WWW: http://sunset.usc.edu/~mattmann/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++