[OpenLayers-Dev] Poor Image Quality

[Bradley Mclain]

Little update which might help shed some light on the matter. I saved that
particular layer and it is a PNG format
 not PNG24 or jpeg, so somehow OpenLayers request to Mapserver is ignoring
the new formats.

I did WMS URL requests to Mapserver and it returns the correct formats.

On 7/11/07, Bradley Mclain <bradleym06 at gmail.com> wrote:
>
> For some reason this is not working for me, I changed the settings in the
> Mapfile and defined the OUTPUTFORMAT and then added the format:'image/png',
> to my Openlayers folder. I even tried changing my mapfile to export as jpeg
> so as to match Openayers but no luck.
>
> Could it have something to do with that I am using the MapServer.Untiledlayer function instead of a
> WMS.Untiled layer?
>
> On 7/10/07, Andrew Hughes <azza at lisasoft.com> wrote:
> >
> >  Bart's correct... but just be warned.... jpeg is A LOT smaller is size
> > than png-24. There's a reason why jpeg is the default in OpenLayers.
> >
> > --AH
> >
> > Bart van den Eijnden (OSGIS) wrote:
> >
> > OpenLayers uses jpeg by default for WMS layers, so change it in the
> > constructor of your WMS.Untiled layer:
> >
> > 'format':'image/png', i.e.:
> >
> > baselayer0 = new OpenLayers.Layer.WMS.Untiled
> > ( "Standaard",
> >
> > "http://test.intranet.rijkswaterstaat.nl/services/geoservices/startkaart?"
> >  <http://test.intranet.rijkswaterstaat.nl/services/geoservices/startkaart?>,
> > {layers: 'startkaart', 'format':'image/png', 'transparent':'TRUE'},
> > {'numZoomLevels': 12, 'ratio':1, isBaseLayer: true} );
> >
> > Also check you have image/png mapped as a mimetype for PNG24 in your
> >
> > Mapserver MAP file (OUTPUTFORMAT section).
> >
> > Best regards,
> > Bart
> >
> > --
> > Bart van den Eijnden
> > OSGIS, Open Source GIS
> >
> > http://www.osgis.nl
> >
> >
> > --------- Oorspronkelijk bericht --------
> > Van: Bradley Mclain <bradleym06 at gmail.com> <bradleym06 at gmail.com>
> > Naar: OpenLayers ML <dev at openlayers.org> <dev at openlayers.org>
> > Onderwerp: [OpenLayers-Dev] Poor Image Quality
> > Datum: 10/07/07 05:07
> >
> >
> >
> >  I am importing an image as an untiled Mapserver layer into OpenLayers and
> >
> >  it is of extremely good quality but when it shows up in OpenLayers it&#39;s
> > quality is terrible.The image when viewed through Mapserver is not as good
> > as the original but it still much better than what it is showing up as in
> >
> > OpenLayers. I have my Mapserver image format as PNG24.
> >
> >  Any ideas on what might be causing this and how to fix it?CheersBrad
> >
> >
> >
> >
> >
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> >
> >
> > --
> >
> > Regards,
> >
> > *Andrew Hughes*
> > Software Engineer
> > LISAsoft Pty. Ltd. (Adelaide)
> >
> > ------------------------------
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> >  <http://terrapages.net/mapbutton/RetrieveButtonServlet?buttonID=4>
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