[ka-Map-users] Re: Partial labels

[ramesh karra]

The label is always there! It's not a new label. Also
I clean  up cache very frequently (infact, I clean up
cache everytime I change small part of data).

Ramesh

--- David Badke <dbadke at uvic.ca> wrote:

> I have seen this happen when the cache gets out of
> sync with the map 
> file. For example, if I generate a map at a given
> scale, then do 
> something to the map file (change min/max when layer
> displays, for 
> example), then load the map again, sometimes a label
> is cut off. 
> Clearing the cache always fixes it. Could it be that
> the tile adjacent 
> to the one with the partial label (that is, the one
> that should have the 
> missing piece of the label) was generated without
> the label, and ka-Map 
> just grabs it from the cache?
> 
> David
> 
> 
> ramesh karra wrote:
> > Thanks again paul!
> >
> > This is certainly not a problem about label at the
> > edge of the map. The point is in the middle of a
> map
> > and most likely is tile boundary problem because
> the
> > label is at the tile boundary. But, as I mentioned
> > before, not all labels in the tile boundary gets
> > clipped.
> >
> > I will try to reproduce it with a small data set
> and
> > will send you the data and the map file in couple
> of
> > days. If it is OK with you I will directly send
> you
> > the data(and not to the list).
> >
> > Thanks
> > Ramesh
> >
> > --- Paul Spencer <pspencer at dmsolutions.ca> wrote:
> >
> >   
> >> Hi Ramesh,
> >>
> >> The root of the problem is that mapserver renders
> >> stuff right up to  
> >> the edge of the map.  To fix rendering issues
> with
> >> thick lines using  
> >> 'circle' symbol (for instance), we have to render
> a
> >> slightly bigger  
> >> image and clip out the center of it to get lines
> to
> >> match up (among  
> >> other things).  This causes a problem with point
> >> symbols and labels  
> >> that are rendered close to the edge of the map. 
> In
> >> MapServer 4.6,  
> >> metadata was introduced to prevent text and
> symbols
> >> rendering too  
> >> close to the edge of the map.  This is controlled
> in
> >> ka-Map's  
> >> config.php file with $metaBuffer (default 10
> >> pixels).
> >>
> >> MapServer 4.6 (final) should have support for the
> >> metadata that  
> >> supposedly fixes this problem.  However, I have
> seen
> >> some examples of  
> >> places where the label does get vertically or
> >> horizontally clipped at  
> >> a tile boundary.  I can't reliably reproduce the
> >> problem so it is  
> >> hard to fix.
> >>
> >> Do you have a small dataset that I could use to
> >> reproduce the problem  
> >> with a copy of your configuration?
> >>
> >> You can use the gimp to capture screenshots in
> >> linux.  There are  
> >> probably a ton of other ways.
> >>
> >> Cheers
> >>
> >> Paul
> >>
> >>
> >> On 21-Mar-06, at 3:59 PM, ramesh karra wrote:
> >>
> >>     
> >>> Thanks for the quick response Paul!
> >>>
> >>> I am using mapserver 4.6 and the class drawing
> the
> >>> label is
> >>> CLASS
> >>>       NAME       "Points"
> >>>
> >>>       STYLE
> >>> 	SYMBOL       7
> >>>         COLOR        225 225 225
> >>>         OUTLINECOLOR 255 000 000
> >>> 	SIZE	     0
> >>>       END
> >>>
> >>>       LABEL
> >>> 	FORCE TRUE
> >>>         COLOR 0 0 0
> >>>         SHADOWCOLOR 255 255 255
> >>>         SHADOWSIZE 1 1
> >>>         TYPE TRUETYPE
> >>>         FONT verdana
> >>>         SIZE 8
> >>>         ANTIALIAS TRUE
> >>>         POSITION CC
> >>>         PARTIALS FALSE
> >>>         MINDISTANCE 0
> >>>         BUFFER 0
> >>>       END
> >>>     END
> >>>
> >>> How do I capture the screenshot in linux?
> >>>
> >>> Thanks
> >>> Ramesh
> >>>
> >>> --------------------
> >>> Ramesh,
> >>>
> >>> there can definitely be a problem, but it
> actually
> >>> depends more on
> >>> mapscript version.  What version of mapserver
> are
> >>>       
> >> you
> >>     
> >>> using?
> >>>
> >>> Also, it may be pertinent to know what your
> label
> >>> style is for the
> >>> layer that is having problems.
> >>>
> >>> Finally, can you send a screenshot of the
> problem?
> >>>
> >>> Cheers
> >>>
> >>> Paul
> >>>
> >>> On 21-Mar-06, at 2:52 PM, ramesh karra wrote:
> >>>
> >>>       
> >>>> Hi,
> >>>>
> >>>> I have kaMap ver 0.2 (Feb 7, 2006) and
> sometimes
> >>>>         
> >> I
> >>     
> >>> see
> >>>       
> >>>> partial labels. This seem to happen when the
> >>>>         
> >> label
> >>     
> >>> is
> >>>       
> >>>> split between two tiles. But it does not happen
> >>>>         
> >>> every
> >>>       
> >>>> time.
> >>>>
> >>>> Is this a known issue? Any solutions?
> >>>>
> >>>> Thanks
> >>>> Ramesh
> >>>>
> >>>>         
> 
> 
> -- 
> 
> David Badke
> Humanities Computing and Media Center
> University of Victoria, BC, Canada
> 
> _______________________________________________
> ka-Map-users mailing list
> ka-Map-users at lists.maptools.org
> 
=== message truncated ===


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