[OpenLayers-Users] Horizontal lines along boundaries

Nina Helle-Mildt helle at sdac.hannover.bgr.de
Thu Jul 10 02:30:58 EDT 2008


Thanks a lot for your help! Replacing the 'gutter' property solved my 
problem.

Nina



Christopher Schmidt wrote:
> On Wed, Jul 09, 2008 at 09:17:03AM -0500, David Fawcett wrote:
>> This may not be an OpenLayers issue.
>>
>> This looks a lot like a problem with MapServer output due to a bug in
>> a specific version of GD.  If this is what is causing your problem,
>> the best solution would be to upgrade the version of GD or MapServer
>> binary/installer (which includes GD).  A workaround mentioned in the
>> bug ticket was to use a TrueType symbol for a circle instead of the
>> ellipse symbol.
>>
>> Take a look at:  http://trac.osgeo.org/mapserver/ticket/1719
> 
> Agree,d this would be a MapServer issue, but the gutter property is
> designed precisely to counteract it, so it's not beyond the realm of
> bugs that OL can work around.  
> 
>> David.
>>
>> On Wed, Jul 9, 2008 at 6:05 AM, Nina Helle-Mildt
>> <helle at sdac.hannover.bgr.de> wrote:
>>>
>>> Hi,
>>>
>>> in my application a WMS layer (getting point data from a PostGIS data table
>>> via UMN MapServer) is displayed on top of a Google Maps layer.
>>>
>>> I have attached a snapshot of something quite common on my map: horizontal
>>> lines along the tile boundaries. Has anyone experienced a similar problem?
>>>
>>> I tried with the "gutter" property on my WMS layer, but with no success:
>>>
>>> var seis = new OpenLayers.Layer.WMS("Seismische Ereignisse", "http://...",
>>> {transparent: 'true', layers: ['q_year_0','q_year_1']},{'isBaseLayer':
>>> false},{gutter: 10});
>>>
>>>
>>> Thanks in advance,
>>> Nina
>>>
>>>
>>>
>>>
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>>>
>>>
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