[Geomoose-users] problem displaying PIXMAP images

[Robert R. Raiz]

Hello,
I think this issue is pretty much solved, meaning that we now know why it
occurs.

A detailed explanation can be found on the MapServer issue tracker here:
https://github.com/mapserver/mapserver/issues/4722

Nevertheless I guess this would be helpful for those who use symbols for
displaying purposes.

Best,


On Thu, Aug 1, 2013 at 1:34 AM, Eli Adam <eadam at co.lincoln.or.us> wrote:

> 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*
>>
>>
>>
>


-- 
*Raiz Roland Robert*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/geomoose-users/attachments/20130808/455232c2/attachment-0001.html>