Paul,
You wrote: "What I think we should do is have it so that you can select the
Coordinate Reference Systems for a task. Then any layers in the task
which use Coordinate Reference Systems can read that Coordinate
Reference Systems and do something with it."
I agree that this is a good idea. I think we should be careful about
automatically projecting data on import to a task. I know that AutoCAD
Map does this. It has caused us some problems before. If we enable
this, I think we should at least make it an option to turn this
behavior "off".
I will be adding the ability to associate a unit system with a Task. I
can easily add the ability to associate a spatial reference system at
the same time.
You wrote: "The driving need for this for me is I have a projection
library and data
in different projections which I want to be automatically transformed
when loading it into JUMP."
How comprehensive is this library? Could your work be incorporated
with what has already been developed in Deegree?
The Sunburned Surveyor
On Wed, Apr 16, 2008 at 10:26 PM, Stefan Steiniger <[EMAIL PROTECTED]> wrote:
> Hei,
>
> sorry Paul for the late response. I am reading some of the left over
> emails lately.
>
> I think your idea sounds reasonable and makes sense to me.
> However, I would hear first a comment by Andreas (because they have the
> new lib and also have done the WMS/WFS stuff).
>
> What you have been refereing to below (CRS plugin) is problably the SRID
> plugin that was needed for WMS (and is included in OJ
> org/openjump/core/ccordsys/ upps.. i see i made an error here and we
> need to correct this;)
>
> did you implemented it already?
>
> stefan
>
> Paul Austin schrieb:
>
> > Michaël,
> >
> > I've found the QName very useful in my DataObject framework which is why
> > I was suggesting using it. It's also nice because it's part of Java so
> > we don't need to have a special jar for a custom identifier. This might
> > then be messy if we want to support using this identifier for many
> > different use cases such as the CRS, feature type names etc.
> >
> > The only reason we would need it over just an int is if we wanted to
> > support non EPSG defined CRS's which some people may want to do in a
> > custom JUMP implementations if the EPSG definitions don't support their
> > needs.
> >
> > Paul
> >
> > Michaël Michaud wrote:
> >>> I think we should utilize QNames for specifying the CRS so for EPSG
> >>> codes it would be {EPSG}4326 (this is how QName in java encodes it as a
> >>> string). By using QName rather than an int it will allow us to support
> >>> different registries of CRS's.
> >>>
> >>>
> >>>
> >> Hi,
> >>
> >> I'm just curious : is there a technical advantage in specifying crs as
> >> QNames
> >> or it is just a way to manage namespaces and be able to reference other
> >> kinds of CRS than just EPSG:XXX
> >> I ask because in my work, I started with a special class of identifier
> >> with the following attributes :
> >> private String namespace;
> >> private String id;
> >> private String shortName;
> >> private String name;
> >> private String remarks;
> >>
> >> which seemed more useful to me than namespace, name and prefix
> >>
> >> but I don't know if I miss something not using QNames
> >>
> >> Michaël
> >>
> >>
> >>> We would need to add the CRS to the task and also support for setting
> >>> it. I know there was a plugin at some point which did something like this.
> >>>
> >>> We would also need an option to set it for the task, this maybe a pop-up
> >>> when you create a new task.
> >>>
> >>> The WMS plug-in could be modified to not ask for the CRS if the server
> >>> supports the current CRS or ask for it if it doesn't or if the CRS isn't
> >>> set for the task?
> >>>
> >>> The driving need for this for me is I have a projection library and data
> >>> in different projections which I want to be automatically transformed
> >>> when loading it into JUMP.
> >>>
> >>> Paul
> >>>
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