[mapguide-internals] RFC60 for vote please

[Walt Welton-Lair]

The purpose of the RFC is to improve the color palette used for PNG8 tiles, and one of the main motivations was to solve this problem:
      Therefore adjacent map tiles might use different colors for map areas crossing tile boundaries.
      This is very obvious and disturbing to the human eye.

The context in which this problem came up involved maps that used the old stylization.  The same problem, however, will occur with PNG8 tiled maps that use the new stylization.  Why should we only fix this for the old stylization and not for the new?  All I want is some official commitment that someone is going to extend this work to also include the new stylization.  We want to encourage people to start using the new stylization more, and RFC 60 (as it stands now) doesn't do that.

It's similar to the raster reprojection work (RFC 51) that was done last summer.  Right now only AGG and DWF have this working and not GD.  I raised that concern during the RFC review process, and the "solution" was to deprecate GD (this work is still ongoing with RFC 52).  The raster reprojection RFC notes this.

My hope is that UV will be the one to do this additional work for RFC 60 - "you need to finish what you start" is my philosophy.  I understand he's not familiar with the new stylization right now, but I don't think figuring out how to do this is really that difficult - UV could certainly manage it.  I'd also be able to provide some pointers to help get this done.

Walt

-----Original Message-----
From: mapguide-internals-bounces at lists.osgeo.org [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of Tom Fukushima
Sent: Monday, May 11, 2009 12:19 PM
To: MapGuide Internals Mail List
Subject: RE: [mapguide-internals] RFC60 for vote please

Jason,

Why should I vote -1?  That seems a little extreme for such a small issue. UV has already indicated that he will fix any defects that show up with the enhanced stylization.  All I'm asking is that this item be documented in the RFC.  

The questions you have about the enhanced stylization and its implications also show that perhaps we should have put the RFC up for formal review.  I think that we are being very generous in trying to push this RFC forward.

Tom

-----Original Message-----
From: mapguide-internals-bounces at lists.osgeo.org [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of Jason Birch
Sent: Monday, May 11, 2009 9:21 AM
To: MapGuide Internals Mail List
Subject: RE: [mapguide-internals] RFC60 for vote please

Tom,

UV has indicated that he doesn't have the experience or examples of enhanced stylization required to implement this support.  If you're not happy with the RFC as it stands, I think you need to vote -1 and propose an alternative.

I'm not entirely clear on the implications of not implementing this support are.  I thought that it just meant that colours not in the list could still be represented in the palette, but in an automated (as previous) fashion, as long as there was room left in the palette.  I guess the risk would be that they wouldn't be represented at all in a map with too many colours statically defined, but that's a risk regardless?  Or am I missing something, and this will cause maps with enhanced stylization to not render those parts at all? 

Jason

-----Original Message-----
From: Tom Fukushima
Sent: Monday, May 11, 2009 6:14 AM
To: MapGuide Internals Mail List
Subject: RE: [mapguide-internals] RFC60 for vote please

Hi Zac,

Looking at this email trail again: I only need commitment that the RFC will be updated so that it will say that it also supports the enhanced symbolization (as Walt states below).

Typically, these types of comments and updates are done after the formal review process before putting an RFC to vote, but the PSC decided to take a risk and allow this RFC to go directly to vote without the formal review because we mistakenly thought there would not be any problems.
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