[worldKit-dev] annotation precision

[wri-ano]

Thanks for your help.
As you said, the accuplot option gives good results, but when enabled, lines and polygons are discarded.
I will now look at the code to see this polygon stuff, but Flash scripting is like egyptian to me ...

jean-marc

> Message du 30/08/07 12:17
> De : "Mikel Maron" <mikel_maron at yahoo.com>
> A : "Discussion of worldKit use and development" <worldkit-dev at lists.brainoff.com>
> Copie à : 
> Objet : Re: [worldKit-dev] annotation precision
>
> Yes, I'd say this is probably a related issue.
> 
> ----- Original Message ----
> From: Ian Mayo <ian at planetmayo.com>
> To: Discussion of worldKit use and development <worldkit-dev at lists.brainoff.com>
> Sent: Thursday, August 30, 2007 10:50:40 AM
> Subject: Re: [worldKit-dev] annotation precision
> 
> Hi jean,
> I can help with your first issue.
> 
> By default worldKit focusses on large scale maps.  The coordinate
> system used for large scale plotting doesn't allow a representation
> small enough for your small scale mapping - that's why you're seeing
> your resolution problem.  Mikel did implement a workaround for this,
> the <accuplot> setting.  <accuplot> allows plotting of points on small
> scale maps, but it doesn't show lines properly at this scale.  Try
> searching the archives for accuplot.  There's also some discussion of
> it in trac.
> 
> I have contracted a developer to overcome this problem.  I've seen his
> demonstration of a valid solution, and a quick inspection of the
> sources seems to show very few code changes required.  Possibly few
> enough for you to reproduce, though unfortunately I don't have access
> to the changes myself to pass them on to you.
> 
> Sorry I can't help with the second issue, but I suspect it's related.
> 
> Ian.
> 
> 
> On 28/08/2007, wri-ano <wri-ano at laposte.net> wrote:
> >
> > Hi,
> >
> > I would like to submit 2 bugs, can't find my way through "trac"
> >
> > 1.Unprecise positionning of points
> > 2.Moving polygons
> >
> > 1.
> > it doesn't show on large scale application like those
> > "advertised" in the example section, but annotations
> > positionning is a bit unprecise. the offset is 0.05 degrees or
> > so. both lat and lon.
> > I'm using wms on nasa'JPL as explained in the documentation.
> > It's like the WMS tiling is somehow shifted to the NorthEast
> > by that offset. it may depend on lattitude.
> > coordinates are verified.
> >
> >
> > 2.
> > The polygons and lines are affected. if you try to draw 2
> > polygons side by side, you will still see a small gap between
> > them. this gap is about 0.03 degrees, but whhen you multiply
> > the number of polygons and/or their edges, this gap may or may
> > not be present, so the polygons are shifted in any direction.
> > for example, adding a point to a polygon can make it stick to
> > its neighbour at the other end of it. Quite erratic.
> >
> > Sorry I cannot explain this behavior correctly. The best thing
> > is to check the example on front page, and zoom in on a
> > country border, between saudi arabia and Yemen for example.
> > You will see what I mean, in some places, there is a
> > no-man's-land, elsewhere it's overlaying. (btw, publishing the
> > source of this example would be great)
> >
> > Once again, those problem does not show for large scale apps,
> > but for small scale ones, it makes worldkit unusable.
> >
> > If you need any more info, just ask me. besides that, worldkit
> > would fit so well for my application, I would be happy to help.
> >
> > it occurs with worldkit 3.3.
> >
> > Thanks
> >
> > jean marc
> >
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