WMS Layer Problem

Mon Jun 26 14:40:01 EDT 2006

Is the MINSCALE property necessary?

>From: Brock Anderson <banders at refractions.net>
>To: "M.L. Jackson" <mljacks2 at HOTMAIL.COM>
>CC: MAPSERVER-USERS at LISTS.UMN.EDU
>Subject: Re: [UMN_MAPSERVER-USERS] WMS Layer Problem
>Date: Mon, 26 Jun 2006 09:45:31 -0700
>
>Check your tomcat logs for incoming requests for the WMS photo service. 
>Those will give clues. I suspect you'll find that the requests are using 
>bboxes that are too large for your photo service. (Your photo service seems 
>to reject requests with bboxes larger than the extents of the DOQ layer. 
>It's a bit finicky, and you may have to work around that. Perhaps increase 
>the extents of your photo service.)
>
>Brock
>
>M.L. Jackson wrote:
>
>>Actually, I'm using the bbox range that you indicated in your other reply 
>>and still not getting a wms layer image. That error message that I posted 
>>is old. I just thought that it might indicate a problem because I haven't 
>>changed much since then.
>>
>>
>>>From: Brock Anderson <banders at REFRACTIONS.NET>
>>>Reply-To: Brock Anderson <banders at REFRACTIONS.NET>
>>>To: MAPSERVER-USERS at LISTS.UMN.EDU
>>>Subject: Re: [UMN_MAPSERVER-USERS] WMS Layer Problem
>>>Date: Mon, 26 Jun 2006 09:26:25 -0700
>>>
>>>Yes, that URL from the Tomcat log is probably the one that Mapserver used 
>>>to request the photo layer.
>>>
>>>Recall the error message I mentioned before said "Invalid Lon-Lat 
>>>coordinates, must specify at least one (lon,lat) pair correctly; 
>>>Longitude must be between -170 and -60 Latitude must be between 15 and 75 
>>>". The bbox in your URL is outside that range.
>>>
>>>Brock
>>>
>>>M.L. Jackson wrote:
>>>
>>>>Thanks for the reply. I tried changing the bounding box and still 
>>>>nothing. I even removed all the layers except the wms layer to make sure 
>>>>it wasn't any conflict with the other layers.
>>>>
>>>>I noticed this message in red after I stopped the Tomcat server. It has 
>>>>only appeared a few times after stopping the server.
>>>>
>>>>"
>>>>HTTP: Starting to prepare HTTP requests.
>>>>
>>>>HTTP request: id=2, 
>>>>http://terraservice.net/OgcMap.ashx?LAYERS=DOQ&REQUEST=GetMap&SERVICE=WMS&FORMAT=image%2Fpng&STYLES=&HEIGHT=600&VERSION=1.1.1&SRS=EPSG:4326&WIDTH=800&BBOX=%2D178%2E217598362366%2C3%2E44738582890752%2C%2D66%2E9692710360024%2C86%2E8836313236801&TRANSPARENT=TRUE&EXCEPTIONS=application/vnd.ogc.se_inimage
>>>>
>>>>
>>>>
>>>>HTTP: Before download loop
>>>>msHTTPWriteFct(id=2, 396 bytes)
>>>>HTTP: After download loop
>>>>msHTTPExecuteRequests() timing summary per layer (connect_time + 
>>>>time_to_first_packet + download_time = total_time in seconds)
>>>>Layer 2: 0.062 + 0.703 + 0.062 = 0.827s
>>>>msDrawRasterLayerLow(photo): entering.
>>>>"
>>>>
>>>>Do you think that it is possible that the url for this layer is somehow 
>>>>being requested exactly how it appears in this Tomcat message?
>>>>
>>>>
>>>>
>>>>>From: Brock Anderson <banders at REFRACTIONS.NET>
>>>>>Reply-To: Brock Anderson <banders at REFRACTIONS.NET>
>>>>>To: MAPSERVER-USERS at LISTS.UMN.EDU
>>>>>Subject: Re: [UMN_MAPSERVER-USERS] WMS Layer Problem
>>>>>Date: Mon, 26 Jun 2006 08:50:19 -0700
>>>>>
>>>>>I made a WMS request in my browser using the request parameters 
>>>>>specified in your photo layer:
>>>>>
>>>>>http://terraservice.net/OgcMap.ashx?request=getmap&service=wms&version=1.1.1&width=500&height=500&layers=DOQ&bbox=-170,60,-150,75&srs=EPSG:4326&format=png
>>>>>
>>>>>
>>>>>
>>>>>The WMS gave an error: "Invalid Lon-Lat coordinates, must specify at 
>>>>>least one (lon,lat) pair correctly; Longitude must be between -170 and 
>>>>>-60 Latitude must be between 15 and 75 "
>>>>>
>>>>>With a different lat-long bounding box it seems to work. I tested with 
>>>>>bbox=-124,46,-110,52. I think the source WMS server doesn't like your 
>>>>>bounding box.
>>>>>
>>>>>That's just a guess. I don't know exactly what WMS URLs mapserver is 
>>>>>using to request the photo layers. If you have a way to intercept those 
>>>>>outgoing URLs that should give you enough clues to fix the problem.
>>>>>
>>>>>Brock
>>>>>
>>>>>M.L. Jackson wrote:
>>>>>
>>>>>>Hi, I'm new to the Mapserver Listserv. I am having problems displaying 
>>>>>>the wms layer on my map. My problem is that I don't see any aerial 
>>>>>>shots at all. It is as if the map is being drawn without the layer.
>>>>>>
>>>>>>Here is a snippet out of my map file where the wms layer is defined:
>>>>>>
>>>>>>LAYER
>>>>>>NAME "photo"
>>>>>>STATUS DEFAULT
>>>>>>TYPE RASTER
>>>>>>MINSCALE 10000
>>>>>>#MAXSCALE 10000
>>>>>>
>>>>>>CONNECTIONTYPE WMS
>>>>>>CONNECTION "http://terraservice.net/OgcMap.ashx?"
>>>>>>
>>>>>>METADATA
>>>>>>"wms_srs" "EPSG:4326"
>>>>>>"wms_title" "Orthophoto"
>>>>>>"wms_name" "DOQ"
>>>>>>"wms_server_version" "1.1.1"
>>>>>>"wms_format" "image/png"
>>>>>>"wms_layers" "doq"
>>>>>>"wms_group_title" "background"
>>>>>>"wms_onlineresource" "http://terraservice.net/OgcMap.ashx?"
>>>>>>"wms_latlonboundingbox" "-170 -60 15 75"
>>>>>>#"wms_connectiontimeout" "120"
>>>>>>END
>>>>>>PROJECTION
>>>>>>"init=epsg:4326"
>>>>>>END
>>>>>>DEBUG ON
>>>>>>END
>>>>>>
>>>>>>BTW, my map extent is -178.21759836236586 18.924781799316406 
>>>>>>-66.96927103600244 71.40623535327121. Thanks for your reply.
>>>>>>
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>>>>>
>>>>
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>
>

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