2008/3/6, Joan Verdaguer <[EMAIL PROTECTED]>: > I already have readen MS-RFC-22a and think it is a very flexible and > powerful enhancement to Mapserver since adds transforming abilities. It can > be seen analogous to applying XSLT to XML: is the next step towards > flexibility. IMHO, it is really a pity that it is not getting enough > support. > That being said, I still see the need of a global built-in expression > mechanism. In the case of writing plugins to transform features, still > exists the need of evaluating generic expressions in these plugins: it would > be a pain to write a specific transformers for every specific style or > attribute transformation. > Moreover, I still see the need to get values from the map environment. Think > of displaying labels at 5% the size of map height: it could be easily get > whith "SIZE mapHeight*0.05", where mapHeight is a built-in variable. >
I agree with the usability, anyway I would prefer not to introduce a new scripting language but try to rely on mapscript in the expressions for example. And I'm a bit scared about the performance impact on evaluating an expression by default for each feature retrieval. Isn't this something that should be pluggable instead? > > I think creating tiles / rendering based on the tiles are somewhat out > > of the context of the mapserver project and can be impemented by an > > outer project. There are a couple of projects that have already > > implemented this. > > I didn't know there already were projects with this functionality. Can you > please tell me which ones are? > This is somewhat the tile.php does in ka-map by using php mapscript for example. Best regards, Tamas _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
