[mapserver-users] Re: [FWTools] Can someone help test a potential bug for me?

[Roger André]

Hi Dane,

A sample image will be too large to upload - it's just under 300 MB, but
I've attached a mapfile.  I can send a .tfw for anyone who isn't able to add
georeferencing to the image after they have created it.

I would be interested in knowing from you whether a WMS request of the same
nature, but made to Mapnik, will yield the same results.  And I have already
posted the same question to the GeoServer list as well.

Thanks,

Roger
--

On Mon, Oct 27, 2008 at 10:54 AM, Dane Springmeyer <blake at hailmail.net>wrote:

> Roger,
> Uploading a test case with a sample image and sample mapfile prepackaged
> would be really useful to speed testing and keep consistent.
>
> Dane
>
>
>
> On Oct 27, 2008, at 9:40 AM, Roger André wrote:
>
> Hi,
>
> I'd like to ask for some help from a couple people running MapServer.  I
> would like to know if others are able to replicate some strange behavior I
> have noticed lately, and what versions of MapServer they are using.  Below
> are the steps needed, they don't take very long.
>
> Step 1.  Create a large rectangular image of Size 14400 x 7200.
>
> Step 2.  Assign georeferencing to the image:
> gdal_translate -a_ullr -180 90 180 -90 -a_srs "EPSG:4326" big_black.tif
> wgs84_big_black.tif
>
> Step 3. Load this image into a MapServer layer and set a contrasting
> IMAGECOLOR in the mapfile (red works well).
>
> Step 4. Make sure you have a spherical mercator projection defined in your
> epsg file.
> <900913> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0
> +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs <>
>
> Step 5. Make a WMS request for a tile that replicates one that TileCache
> makes:
> http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/test/test.map
> &layers=imagery
> &srs=EPSG%3A900913
> &version=1.1.1
> &bbox=-20037508.34%2C-20037508.34%2C-10018754.1704%2C-10018754.1704
> &service=WMS
> &width=256
> &styles=
> &format=image%2Fpng
> &request=GetMap
> &height=256
>
> Step 6. Look at your resulting tile. Is it full of data from top to bottom,
> or is there a band of IMAGECOLOR at the bottom?
>
> Step 7.  Let me know your results.
>
> Thanks very much!
>
> Roger
> --
>
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>
>
>
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