[Geomoose-users] problem displaying PIXMAP images

[Eli Adam]

On Wed, Jul 31, 2013 at 2:01 PM, Robert R. Raiz <raizrobert at gmail.com>wrote:

> Hello Eli,
>
> I already tried both shp2img and legend commands in mapserver but still,
> the result is not good. I am familiar with all the mapserver documentation
> as I am using it for many years now. Trying to find a link between all
> these and I just realized that maybe libpng 1.6.2 has something to do with
> it. I will troubleshoot per advice and come back with the results.
>

You may get better help on the mapserver-users or mapserver-dev list for
something like the specifics of png symbol rendering in MapServer.
Removing all aspects of GeoMoose before asking will probably get you a
better response on MapServer lists.  shp2img is a great way to separate the
two.

Once you have it solved, you could follow up here with a summary or link to
the details since it may be of interest to other GeoMoose users.

Eli



>
>
> On Wed, Jul 31, 2013 at 6:38 PM, Eli Adam <eadam at co.lincoln.or.us> wrote:
>
>>
>>
>>
>> On Tue, Jul 30, 2013 at 11:07 PM, Robert R. Raiz <raizrobert at gmail.com>wrote:
>>
>>> Hello all,
>>>
>>> This is somehow related to a previous post I made regarding an *"Image
>>> handling error. Unsupported output format (image/png;bits=8)".
>>> *
>>> I went to the demo part in GeoMoose and added to the original, untouched
>>> demo folders another layer (point shapefile - containing a few points), an
>>> icon (.png) in the symbol folder and all the other data connected to this
>>> layer (declaring it in the symbol.sym, mapbook.xml and so on) in order to
>>> display it.
>>>
>>> The thing is, whatever I do with the output format (state only one,
>>> none, or more, combinations, specifying option, changing imagetypes and so
>>> on) the symbol (.png file) does not render well - it gets fuzzy, pixelated.
>>> Like it does not preserve its quality or something like this.
>>>
>>> The icon has a good quality, clear image, smooth edges, even at a small
>>> size (in my normal viewer). Displayed in GeoMoose it looses the quality.
>>>
>>
>> Taking GeoMoose out of the equation is one way to simplify this
>> troubleshooting.
>>
>>
>>>
>>> Can I ask some of you to try and replicate this? just add 2,3 points
>>> somewhere in your project and an icon to be displayed for those points. I
>>> would really like to see where the issue comes from as I am stuck at this
>>> part of my project for close to two weeks now and I cannot find a fix to
>>> this. Not sure what to modify, if its a mapserver thing or something else.
>>>
>>
>> You can try using the shp2img utility to test just your map file and see
>> the quality of output.  There is a pointer to the Test your Mapfile section
>> of MapServer docs,
>> http://mapserver.org/optimization/debugging.html#step-5-test-your-mapfile,
>> from the GeoMoose FAQ,
>> http://www.geomoose.org/docs/faq.html?highlight=shp2img#why-am-i-getting-these-pink-tiles-when-i-look-at-geomoose.
>> There are some additional details on shp2img on the GeoMoose wiki,
>> http://www.geomoose.org/wiki/index.php/Troubleshooting_map_files_with_shp2img
>>
>> MapServer has additional details about symbols.  Here is a specific note
>> about the use of PNGs,
>> http://www.mapserver.org/mapfile/symbology/construction.html#symbols-of-type-pixmap
>>
>> Using shp2img you can evaluate the output from MapServer.  If you are not
>> getting quality output from MapServer, then you will not get quality output
>> in GeoMoose.  If you are getting quality output from MapServer then you can
>> remove it from the equation and troubleshoot GeoMoose.  The first step
>> would be to compare the specific request made in GeoMoose and see if the
>> parameters are the same as what you were using in MapServer.  If so, then
>> you should be getting similar quality output.  If not, then you can be
>> focused on trying to configure GeoMoose to be using the same parameters as
>> you were using in MapServer.
>>
>> Best Regards, Eli
>>
>>
>>
>>>
>>> I appreciate any help I can get,
>>>
>>> --
>>> *Raiz Roland Robert*
>>>
>>>
>>>
>>> _______________________________________________
>>> Geomoose-users mailing list
>>> Geomoose-users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/geomoose-users
>>>
>>>
>>
>
>
> --
> *Raiz Roland Robert*
>
>
>
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