[mapserver-users] WFS Filter encoding . . . Anyone know what the Units list for DWithin that MapServer honors?

[Blammo]

More info,

Using this service call:

https://www.sharedgeo.org/MNGEO-ro/public/ows?SERVICE=wfs&VERSION=1.1.0&REQUEST=getFeature&TYPENAME=layer_3&FILTER=%3CFilter%3E%3CDWithin%3E%3CPropertyName%3EGeometry%3C/PropertyName%3E%3Cgml:Point%3E%3Cgml:coordinates%3E-93.093,44.955%3C/gml:coordinates%3E%3C/gml:Point%3E%3CDistance%20units=%27f%27%3E0.0438%3C/Distance%3E%3C/DWithin%3E%3C/Filter%3E

I tried, FT, FEET, Ft, ft, Feet and f, (this last, the "f" is the only 
thing that changed the results, but it only increased the return from 
three to six points):

I used the same unit distance of 0.0438, which the majority of time 
returns three points. These points in ground units are actually within 
~2360ft of each other.  I have no idea how the 0.0438 number relates to 
that.  Is it possibly related to the LAT/LON coordinate system?

This is working enough for me to get through my current stage of 
development, I'm just trying to get a handle on how the filter units are 
supposed to relate to the map units.  Maybe DWithin has a PROJ option or 
something??

Thanks

bobb



On 7/11/2010 8:43 AM, Yewondwossen Assefa wrote:
> On 11/07/2010 5:26 AM, Blammo wrote:
>> All,
>>
>> I've got a filter request working with DWITHIN but get seemingly 
>> weird returns.. Using EPSG:4326, and "m" (Does this = Miles??) I get 
>> returns that I expect when using fractional "m" values.
>>
>> What other unit designations are honored?  I don't see anything in 
>> the getCapabilities about units or the MapServer docs.
>>
> here are the units and abbreviations that can be used:
> - m or meters: can be used to indicate meters
> - km or kilometers:  kilometers
> - NM: nauticalmiles
> - mi or miles : miles
> - in or inches : inches
> - ft or feet : feet
> - deg or dd: degree
> - px: pixels
>
> ticket was added to add this in the docs 
> (http://trac.osgeo.org/mapserver/ticket/3488)
>
>> Lastly, does MapServer support CQL (yet?), I saw references to this 
>> in my searching.
>>
> Not that I am aware of.
>
>
> best regards
>
>