[mapguide-internals] MapGuide RFC 14 - Cartographic StylizationEngine (maybe this time I'll get it right)

[Robert Bray]

Some thoughts:

I don't think (2) works because it is binary, not XML. (3) seems like a 
bad choice for this type of data, in my opinion its better to keep it 
coupled with the resource.

I like (1) because it keeps the image with the symbol definition. I also 
like (4), but mainly for saving the resource as XML.

Paul's suggestion is also a viable option if we want to keep the Symbol 
Library concept around. I guess the burning question is do we still need 
the DWF symbols / symbol libraries? With this proposal should we 
deprecate them and keep them around only for backward compatibility?

Bob



Paul Spencer wrote:
> Carsten,
> 
> Why can you not reference it inside the existing SymbolLibrary object in 
> the repository?  This mechanism is already used for point symbols and 
> seems to fit semantically for this purpose too.  I believe there is 
> already a way to do this using MarkSymbolType or something like that 
> (I'm not looking at the schema for layer definition so I may have that 
> wrong)
> 
> Cheers
> 
> Paul
> 
> On 4-Feb-07, at 3:23 PM, Carsten Hess wrote:
> 
>> Hi Paul,
>>
>> I think we have four choices for binary raster data:
>>
>> 1) We could attach it to the symbol resource as binary data (resource 
>> data)
>> 2) We could make it its own resource
>> 3) We could put it  somewhere on the file system
>> 4) We could embedd it in the XML as base64 encoded stream
>>
>> Currently you find 3) only because of our prototype, we actually don't 
>> want to propose that. We played with some of the XML and use it to 
>> refer to raster via the file system. That is easier to debug then in 
>> the resource repository.
>>
>> The schema refers to 2) and 4) I think as a possiblity ... I 
>> personally also like 1) but then we would have to figure out how to 
>> refer to it and how to put multipl raster in there.
>>
>> Cheers
>>   Carsten
>>
>>     -----Original Message-----
>>     From: mapguide-internals-bounces at lists.osgeo.org on behalf of Paul 
>> Spencer (External)
>>     Sent: Sun 2/4/2007 12:22 PM
>>     To: MapGuide Internals Mail List
>>     Cc:
>>     Subject: Re: [mapguide-internals] MapGuide RFC 14 - Cartographic 
>> StylizationEngine (maybe this time I'll get it right)
>>     
>>     
>>
>>     I notice that the first example references an image in the Library://
>>     but the documentation in the proposed schema say its a reference to
>>     an external image.
>>
>>     Is the intention to actually reference images on the server in an
>>     external location on the file system, external via http, or actually
>>     to allow putting images into the repository?
>>
>>     I like the idea of being able to put images such as PNGs into the
>>     repository and referencing them there - but there is no concept of
>>     this in the proposed schema.
>>
>>     I guess, thinking about this, it would be best to reference an image
>>     inside a SymbolLibrary.  What would be the implications of this to
>>     your proposal?
>>
>>     Cheers
>>
>>     Paul
>>
>>     On 2-Feb-07, at 4:29 PM, Robert Bray wrote:
>>
>>     > THIS TIME SENT AS VERY PLAIN TEXT with FIXED LINK - SORRY FOR THE
>>     > SPAN ALL
>>     >
>>     > All,
>>     >
>>     > We would like to submit the following RFC for open discussion and
>>     > comments:
>>     >
>>     > http://www.osgeo.org/trac/mapguide/wiki/MapGuideRfc14
>>     >
>>     > - Note this RFC is living on our new Trac based Wiki. The other
>>     > RFCs will be moving to this location shortly.
>>     >
>>     > Please respond to the list with any feedback and we will be happy
>>     > to respond.
>>     >
>>     > Thanks,   Walt, Traian, Carsten, Jason (and others like Bob the
>>     > admin assistant)
>>     > _______________________________________________
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>>     > mapguide-internals at lists.osgeo.org
>>     > http://lists.osgeo.org/mailman/listinfo/mapguide-internals
>>
>>     +-----------------------------------------------------------------+
>>     |Paul Spencer                          pspencer at dmsolutions.ca    |
>>     +-----------------------------------------------------------------+
>>     |Chief Technology Officer                                         |
>>     |DM Solutions Group Inc                http://www.dmsolutions.ca/ |
>>     +-----------------------------------------------------------------+
>>
>>
>>
>>
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> 
> +-----------------------------------------------------------------+
> |Paul Spencer                          pspencer at dmsolutions.ca    |
> +-----------------------------------------------------------------+
> |Chief Technology Officer                                         |
> |DM Solutions Group Inc                http://www.dmsolutions.ca/ |
> +-----------------------------------------------------------------+
> 
> 
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