[OpenLayers-Users] Vector select styles
Bjorn Sandvik
bjorn at thematicmapping.org
Thu Apr 10 12:22:20 EDT 2008
Hi Tim,
Examples will be provided to your examples directory shortly.
I just want to add a some comments to my code.
More thematic mapping techniques is in the pipeline.
Thanks,
Bjorn
Tim Schaub wrote:
> Hey Bjorn-
>
> Glad to see you find it useful.
>
> For those who haven't followed recent style changes, the page below is a
> very nice use of "advanced context" for styles.
>
> http://www.thematicmapping.org/experiments/openlayers/piecharts.html
>
> Basically, you can have any value in a symbolizer (a symbolizer is what
> we used to call feature.style) be derived by any function that evaluates
> a feature for any feature property. This includes feature attributes,
> feature geometry, or anything else you choose to store on a feature.
>
> If you give an OpenLayers.Style instance a context property, then the
> all symbolizers will be evaluated in this context. The
> styles-context.html example in our examples dir shows another use.
>
> Bjorn, can you contribute these examples to our examples directory? Any
> contributions of examples and documentation are greatly appreciated.
>
> http://trac.openlayers.org/wiki/HowToContribute
>
> Tim
>
> Bjorn Sandvik wrote:
>
>> Thanks for your response. It works:
>> http://www.thematicmapping.org/experiments/openlayers/propsymbols.html
>>
>> Bjorn
>>
>> http://blog.thematicmapping.org
>>
>>
>> Christopher Schmidt wrote:
>>
>>> On Wed, Apr 09, 2008 at 04:55:35PM +0100, Bjorn Sandvik wrote:
>>>
>>>
>>>> Hi,
>>>>
>>>> I'm having a problem with hover styles using OpenLayers 2.6-rc1:
>>>> http://www.thematicmapping.org/experiments/openlayers/propsymbols.html
>>>>
>>>> When you hover on of the circles the size is not preserved.
>>>> Is there a way to define the "default" and "select" styles to be the same?
>>>>
>>>>
>>> In 2.6-rc2, this is fixed.
>>>
>>> In 2.6-rc1, you can do:
>>>
>>> StyleMap({'default': style, 'select': style});
>>>
>>> If you want to only change (for example) the color, and not the size,
>>> you can do (in either version):
>>>
>>> StyleMap({'default': style, 'select': {strokeColor: '#0000ff'}});
>>>
>>> Regards,
>>>
>>>
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>
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