[OpenLayers-Dev] ArcXML support

[David Zwarg]

Hello Christian,

This is a good place to start if you want to contribute to OpenLayers:
http://trac.openlayers.org/wiki/HowToContribute

It looks like you have some really good ideas about how the ArcXML format
could be improved already (and it looks like you know your way around the
code), so I would suggest getting on the OpenLayers trac, creating an
account, and start opening tickets.  The basic procedure is:

   1. File a ticket.
   2. Create a patch, with tests
   3. Set the patch to review
   4. Nag some OpenLayers trunk committer

I can help with specific bug fixes to the ArcXML format in the near term,
but my work implementing the rest of the spec won't happen immediately (it's
a large spec).

I hope this helps,
Zwarg



On Tue, Apr 28, 2009 at 5:28 AM, <stegch at web.de> wrote:

> Hello David Zwarg,
> it would be great, if the functionality of the renderers could be
> expanded.
> If it is a bug, the missing declaration for "symbol[key]" in line 560
> in ArcXML.js should be added soon.
>
> Moreover I don't understand these lines in ArcXML.js (lines 683-688):
> for (var i=0, len=keys.length; i<len; i++) {
>  var key = keys[i];
>  if (symbol[key]) {
>  selem.setAttribute(key, renderer[key]);
>  }
> }
>
> "selem.setAttribute(key, symbol[key]);" makes more sense, doesn't it?
>
> Generally I would be interested in full ArcXML support for all
> further types of renderers (valueMapLabel, simpleLabel and valueMap).
> What do you think, would it be possible to write all symbols and
> attributes in arrays as you did with "fontStyleKeys" (line 27-30)?
> Otherwise you always check the type of each attribute, but ArcIMS
> makes no difference and you can only use attributes you have
> mentioned in your code, for example:
> if (typeof exact.symbol.width == "number") {
>  selem.setAttribute("width", exact.symbol.width);
> }
> I don't see any problem, if you allow the usage of every attribute
> for every symbol, because you have to know ArcXML anyway if you work
> with ArcIMS - you have to know which symbols or attributes can be
> combined.
> Unfortunately I'm not familiar with OpenLayers, so can you tell me
> how I can contribute to OpenLayers?
>
> Thank you for your help.
> Best regards,
> Christian Steger
>
>
>
>
>  *Von:* "David Zwarg" <dzwarg+ol_dev at avencia.com<dzwarg%2Bol_dev at avencia.com>
> >
>  *Gesendet:* 27.04.09 19:18:48
>  *An:* stegch at web.de
>  *CC:* dev at openlayers.org
>  *Betreff:* Re: [OpenLayers-Dev] ArcXML support
>
> Hello,
>
> The ArcXML implementation is incomplete, yes. I wrote it to support
> basic thematic mapping, and I can add other renderers as folks need
> them. Although, it looks like you added a simple renderer below --
> probably filing a patch would be the fastest way to get it in to
> ArcXML.
>
> It's definitely possibly to send ArcXML directly to ArcIMS, although
> I would like to see more of the spec implemented in the format itself
> first.
>
> -Zwarg
>
>
>
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