[Cartoweb-users] Re: super layer

[Oliver Christen]

Hi Giuseppe

see
http://pomerape-dev.c2c/~ochriste/doc/user.query.html#user.query.mapfile.metadata
for info about query_returned_attributes

as for retrieving the point coordinate, I would say using a point with a 
buffer would be more efficient than storing a polygone, though im not a 
specialist in the matter.
have a look at builtin functions in postgis, maybe there is one that would 
do exactly what you need.

regards
Oliver


> Hi Oliver,
> at least I've just finisched to write the rtf plugin, now I can manage a
> stack of possible documents.
> Now I can focus on the super layer feature. I've read the query plugin.
> Anyway by seeing the .map of demo plugin I see the following quaryble 
> layer:
>
> LAYER
>    NAME "lake"
>    TYPE POLYGON
>    DATA "inwatera"
>    TRANSPARENCY 70
>    METADATA
>      "id_attribute_string" "OGC_FID|string"
>      "query_returned_attributes" "AREA"
>    END
>    TEMPLATE "ttt"
>    CLASS
>      NAME "lake"
>      STYLE
>        COLOR 180 180 240
>        OUTLINECOLOR 0 0 180
>      END
>    END
>  END
>
> there is no postgis connection . While I was writng the following one:
>
> LAYER # query layer using the loccoords PostgreSQL table
> NAME point_to_mark
> CONNECTIONTYPE postgis
> CONNECTION "user=postgres1 password=password dbname=my_country
> host=localhost port=5432"
>
> DATA "the_geom from super_layer_tab"
> STATUS ON
> TYPE POINT
> BUFFER 5
> CLASS
> NAME "point_to_mark"
> STYLE
> SYMBOL "circle"
> SIZE 5
> COLOR 255 0 0
> OUTLINECOLOR 0 0 0
> END
> END
>
> In the former there is "Area" which should be the returned and displayed
> string, nut in the latter there is no info about the column table which I
> 've to read to transfer the link.
> Could you say me which is the right solution ?
> As far as I know I have to add and customize the query.ini in server and
> client conf.
>
> Finally I 've to customize the tablerules.
>
> In order to catch the point , do you advice me to choose a polygon area or 
> a
> point into a sensible circle area ?
>
> Thanks in advance and best reagards
>
> Giu
>
>
>
> --------- Original Message --------
> Da: Oliver Christen <oliver.christen at camptocamp.com>
> To:
> Oggetto: Re: super layer
> Data: 18/04/07 08:59
>
> >
>>
>>
>>
>>
>> >
>> > and now ?  If I click by a point, I want a new browser window opened to
>> > the
>> > link www.link1.com (only one result). do I have to use the query plugin
> ?
>> > Please can you suggest me something more ? In some example I sow there
> is
>> > a
>> > template.html, but I 'm a bit confused by using it in Cartoweb
> environment
>> > .
>> >
>>
>> you use the standart Query plugin, but you add some tableRules. 
>> tableRules
>
>> are functions that will format a query result before it is displayed in
> the
>> page.
>> this would allow you to format the result so it doesnt get displayed as a
>> normal query result (in an html table) but in a hidden <div> element, for
>> example.
>>
>> see
>>
> http://www.cartoweb.org/doc_head/docbook/xhtml/dev.newplugin.html#dev.newplugin.special.tables
>> and there is an exemple in the "cartoweb for beginner" workshop we have
>> there: http://www.cartoweb.org/cwiki/Foss4g06Workshops
>>
>> Then, you make a javascript script that will be triggered "onLoad",
> meaning
>> everytime the page finish to load. That script will check if the hidden
> div
>> exit ( if (xGetElementById('myHiddenDiv')) for example) and if that div
>> contain a link ( if (xGetElementById('myLink')) if you give an id to the
> <a
>> href=".." id="myLink">...</a> ) you then get the href value with
> javascript
>> and then do a windows.open() with the link you just recovered.
>>
>> regards
>> Oliver
>>
>>
>>
>>
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