Thanks for your insights guys.
I have also noticed that a lot of Java based projects use the JTS
library for geometries, while this library does not really follow any
specs (afaik). Do you guys feel that this is becoming a problem? I'm
asking this because there is also a JTS4GWT project out there.
On 07/14/2011 01:42 AM, Bruce Bannerman wrote:
Pieter,
I agree with Jody.
I'm seeing increasing demand for clients that can utilise vector data
constrained by an application schema.
Europe is probably most advanced in this work with Inspire.
In Australia we have a lot of work currently at research and at
implementation stage trying to work with Simple Features 1 (aka
Complex Features).
Some examples are WaterML 2.0 and GeoSciML. We will also be looking
seriously at CSML 3.0.
Bruce Bannerman
On 13/07/11 10:52 PM, "Jody Garnett" <jody.garn...@gmail.com> wrote:
It is the ISO 19107 specification; the same one that lurks behind
GML Ready to leap out from under a surface and foist trans finite
set on an unsuspecting world. It is worth while getting the ISO
19107 document (ie pay for it) as it is much easier to read and
follow then learning this information second hand.
We had a brief code sprint with deegree (compatible LGPL license)
in order to see if multiple project would be interested in
attacking the problem. GeoAPI was the first attempt (which has now
been released last month), we have a couple of implementations in
GeoTools (mostly ports or wrappers of JTS). deegree has an
implementation that is closer to the GML constructs etc....
If you are interested in pursuing this I recommend talking to
Tisham who has been more active research. I am afraid I am
interested in using a Geometry library and enthusiasm goes as far
as setting one up with a good design so that it can be completed
successfully.
--
Jody Garnett
On Wednesday, 13 July 2011 at 9:54 PM, Pieter De Graef wrote:
Hi Jody,
that's the GeoApi specification no?
At first we would be using it on the GWT client we where
hoping to also include curves, as those can be directly drawn
in SVG/VML. At a later stage we could switch the backend to
make use of it as well.
Jody, you have been looking into creating you own Geometry
library for some time now I understand. How would you approach
this? I was hoping to start with something simple, that can
grow at it's own pace. Important for me is that I can use the
same objects on both client and server (meaning Java with some
GWT restrictions).
I am also afraid to be re-inventing the wheel, but using 2
different libraries on client and server would be a shame when
using GWT...
2011/7/13 Jody Garnett <_jody.garnett@gmail.com_>
There is a third model; the ISO19107 model that deals
with a few more things; it is however object oriented in
nature....
--
Jody Garnett
On Wednesday, 13 July 2011 at 6:36 PM, Pieter De Graef wrote:
Hi everyone,
for the Geomajas project, we are looking into
separating the Geometry functionality into an
independent project. In other words, I am talking
about a Geometry project for the Web. This code would
be written in Java for GWT and thus be available on
Java backends as well as client environments (we
intend to add a JavaScript wrapper around the GWT code).
Now the problem that I'm facing here, is which model
to follow....
On one hand there is the Simple Feature Specification
which is clearly an Object Oriented model with the
advantage that it is well known but is also more
difficult to implement the JavaScript wrapper around.
On the other hand we could follow a service based
model (more like SFS for SQL) which is easier to get
up and running, easier to create a JavaScript wrapper
for and easier to translate into web services.
As it's difficult for us to chose and as it's a pretty
crucial decision for the future of the Geomajas
project, I as wondering how you guys feel about this.
Kind regards,
Pieter De Graef
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Pieter De Graef
Community Manager
GeoSparc nv.
http://www.geosparc.com/
Chairman of the Geomajas project
http://www.geomajas.org/
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