[OpenLayers-Users] Layers are not being drawn - proxy issue?

[J. Brian Adams]

I fixed the problem.  The first was as you mentioned that I am using  
Openstreetmaps and I had failed to add the projection to the layer.   
Adding the line

{
projection: new OpenLayers.Projection("EPSG:4326")
}

fixed the problem that I had with a KML point file.  But the GML layer  
then disappeared completely.  I had created the GML file from a GRASS  
vector file in a state plane coordinate system.  That appears to have  
been the problem. I re-exported the file from GRASS vector to GML but  
this time in a vector that was already in a Lat - Long format.  It now  
loads and displays correctly.

Thanks for your help.

Brian

On Mar 19, 2009, at 11:22 AM, Christopher Schmidt wrote:

>

>> On Thu, Mar 19, 2009 at 09:00:56AM -0400, J. Brian Adams wrote:
>>> I am completely new to openlayers (Started Monday!).  I have been
>>> working through some examples but with my own data.  I have a map  
>>> with
>>> a base layer from openstreetmaps and with a gml layer that I created
>>> with
>>>
>>> 			var munis = new OpenLayers.Layer.GML("Municipalities",
>>> "Municipals2006.gml");
>>> 			map.addLayer(munis);
>>>
>>> It shows up as Municipalities in the menu on the right, but nothing
>>> shows on the map.  The gml file is on the same machine, a mac, and  
>>> in
>>> the same directory as the html file.  I had read that this might  
>>> be a
>>> proxy problem, but at that I am lost.
>>>
>>> If this is a proxy issue, how do I work around it?
>>
>> This is not a proxy problem.
>>
>> Do you have Firebug installed? is an xmlhttprequest being made?
>>
>> Regards,
>> -- 
>> Christopher Schmidt
>> MetaCarta
>
> Oh, you're using OpenStreetMap. did you confirm that your data isn't
> showing up at 0,0 off the coast of Africa? You should add  
> {'projection':
> new OpenLayers.Projection("EPSG:4326")}, as a third arg to your
> Layer.GML.
>
> -- 
> Christopher Schmidt
> MetaCarta