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Re: [udig-users] Label Priority
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I do not think there are any issues; just that the validation checker
is checking against the exact SLD standard (rather than these vendor
specific extensions).
Jody
On Thu, May 7, 2009 at 3:34 AM, Rorie Overby <roverby@xxxxxxxxxxxxx> wrote:
> Thanks Ugo,
>
> I tried adding a Priority expression to prioritize city labels by POPULATION
> as follows:
> <sld:Priority>
> <ogc:PropertyName>POPULATION</ogc:PropertyName>
> </sld:Priority>
>
> and it works, but it does not pass the validation test:
> (line 123, column 39)cvc-complex-type.2.4.d: Invalid content was found
> starting with element 'sld:Priority'. No child element is expected at this
> point.
>
> And, after applying the style and closing the style editor, I go back to
> make more edits to the xml and the above lines are changed to this:
> <sld:Priority>
> <sld:PropertyName>
> <ogc:PropertyName/>
> </sld:PropertyName>
> </sld:Priority>
>
> Do you see any issues with the SLD I'm using?
>
> Ugo Taddei wrote:
>>
>> Hello Rorie,
>>
>> Rorie Overby wrote:
>>>
>>> Does anyone know how uDig determines label priority? I've tried to use
>>> multiple rules in the sld xml, first rule to draw larger cities, second to
>>> draw smaller ones, but uDig seems to prioritize the smaller cities
>>> regardless of the order of the rules. I've also tried using two layers, but
>>> the smaller cities are still drawn over the larger ones, even when the
>>> smaller cities layer is below the larger cities.
>>
>> I think udig has its own label painter (with its own intelligence), and
>> might be messing around with your style. But that's just a thought. Another
>> thought is: sld is very complex, so your style might not be correct...
>>
>> Anyway, you want to have a look at
>>
>> http://geoserver.org/display/GEOSDOC/LabelingOptions
>>
>> which has wonderful examples for what you're trying to do. I think it's
>> mainly about vendor options, but the code is in geotools (thus in udig), so
>> you should be able to profit from it. (Matter of fact, I've used vendor
>> options writing designing my own styles with udig.)
>>
>>>
>>> Another question I have regarding label priority is if there is any way
>>> to define the label order by a layer's attributes, like (order by
>>> 'POPULATION' desc)?
>>>
>>> Thanks in advance,
>>>
>>> rorie
>>
>> Cheers,
>>
>> Ugo
>
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