Re: [udig-users] Label Priority

[Jody Garnett <jody.garnett@xxxxxxxxx>]

Thanks for looking into that; the settings should last between runs!
If you can make a bug report this is something that would be good to
make a not of and fix. If I had to guess it would be that the SLD
writing code does not know about these extra options :-(

Jody

On Tue, May 12, 2009 at 2:48 AM, Rorie Overby <roverby@xxxxxxxxxxxxx> wrote:
> Thanks Jody,
>
> Just to clarify, the extensions parameters do work, but if I close a project
> and open it up again, my style doesn't work anymore. I have to manually
> copy/paste the styles back into each layer each time I close/open a project.
> Is that expected behavior?
>
> Jody Garnett wrote:
>>
>> 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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>
>