[mapserver-users] howto draw amount of points features of one layer depending on scale

[Subha Ramakrishnan]

Hi All,

Can someone tell me what the solution was?
I tried using the link but it seems to be in-active now.

Please help.
Thanks a lot.

Subha

Nils Zierath wrote:
> Yewondwossen,
> thanks for the link. I had to switch off the "FORCE true" option of 
> the sample map file and it now works perfectly.
>
> Nils
>
>
> Yewondwossen Assefa schrieb:
>> Nils,
>>
>> look at this thread: it gives details of what you want to accomplish 
>> with an example of a working layer:
>>
>> http://www.mail-archive.com/mapserver-users@lists.osgeo.org/msg00164.html 
>>
>>
>> Best Regards,
>>
>> Nils Zierath wrote:
>>> Hi David,
>>> your suggestion is similar to Jeff's?
>>> How would I treat a point as lable? I haven't had any luck in 
>>> displaying the points with "TYPE ANNOTATION".
>>>
>>> What would the syntax in the mapfile would look like to either treat 
>>> a point as lable or with "TYPE ANNOTATION"?
>>>
>>> My mapfile currently looks like:
>>>
>>> LAYER
>>>  NAME    'Field research locations'
>>>  DATA    '../vector/gps/fieldresearch_complete'
>>>  STATUS    default
>>>  TYPE    point
>>>  #TYPE    annotation
>>>  TRANSPARENCY    100
>>>  TOLERANCE    7
>>>  TOLERANCEUNITS    pixels
>>>  UNITS    kilometers
>>>
>>>  METADATA
>>>  ...
>>>  END #METADATA
>>>
>>>  PROJECTION
>>>  ...
>>>  END #PROJECTION
>>>
>>>  CLASSITEM    'StudyFocus'
>>>  #LABELITEM    'LableAnnot'
>>>
>>>  CLASS
>>>   NAME    'Research locations (all)'
>>>   #MINSCALEDENOM    1000000
>>>
>>>   STYLE
>>>    SYMBOL 'ttf_pin-sm'
>>>    SIZE 10
>>>    COLOR 255 180 0
>>>    ANGLE 345
>>>   END #STYLE
>>>  END #CLASS
>>> END #LAYER
>>>
>>>
>>>
>>> David Percy schrieb:
>>>> If you treated them as labels when zoomed out (maxscale 50000 for 
>>>> example), then you could take advantage of the label colission 
>>>> features of mapserver to avoid overlaps.
>>>>
>>>> when zoomed in further you could have another layer (minscale 50000 
>>>> for example) that shows all the detail...
>>>>
>>>> so you would have two layer definitions in this case...
>>>> Cheers,
>>>> Percy
>>>>
>>>>
>>>> Nils Zierath wrote:
>>>>> Dear list,
>>>>> I got a layer with gps points. On the largest scale of my map the 
>>>>> symbols for points overlap and are not distinguishable from one 
>>>>> another since they are too close together.
>>>>>
>>>>> Is it possible to tell mapserver to draw only that many of the 
>>>>> points/symbols that do not overlap, so that more points will be 
>>>>> shown the more I zoom into the map?
>>>>>
>>>>> Thank you,
>>>>> Nils
>>>>>
>>>>> _______________________________________________
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>>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>>>
>>>>
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>>
>>
>
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