[postgis-users] java and postgis: your suggestions and ideas

[Seamus Thomas Carroll]

Apparently i left my brain at home today.  the postgis jump driver being 
versioned 1.0 caused me to think that it was for jump1.0.

Seamus

On Tue, 3 Feb 2004, Seamus Thomas Carroll wrote:

> I have looked into using JUMP but from what I last read JUMP1.1 does not 
> support postgis.  Has this changed?  If there is a postgis driver for 
> jump1.1 that has not been officialy released where can I get it.
> 
> Regards to GISToolkit:
> Would an accuracy problem cause some layers to appear correctly while 
> causing another layer to dissappear?  If this is so I will look into the 
> code and follow your advice.
> 
> Seamus
> 
> On Tue, 3 Feb 2004, Jody Garnett wrote:
> 
> > Seamus Thomas Carroll wrote:
> > 
> > >For the past two weeks I have been working with the GISToolKitEditor 
> > >changing it to suite my needs.  I did some testing today where I add a few 
> > >layers from the database and zoom in.  As I zoom in closer a specific 
> > >layer begins to distort or disappear.  It is not a postgis issue because i 
> > >  
> > >
> > It really just sounds like you are running into accuracy issues, The 
> > conversion from double coordinates maintained by Postgis to the Java 
> > Shape which use float are probably to blame.  Try and take manual 
> > control of the zoom process and make sure doubles are used for as long 
> > as possible.
> > 
> > >2) I may be forced to change java libraries so can anyone recommend a 
> > >different java library that I can use as a stand alone tool?
> > >  
> > >
> > JUMP Exists, has a Postgis loader. It is GPL, runs as a stand alone tool.
> > GeoTools2 exists has a Postgis data store and some renderers, it is not 
> > a stand alone tool. But is LGPL.
> > 
> > >I have other suggestions and question but I have not recieved a response 
> > >to my first question on the GISToolkit Sourceforge website.
> > >  
> > >
> > Cheers,
> > Jody, Refractions Research
> > 
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> > 
> 
> 
> 
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