Browse mode expects an imgext in this case. It's necessary to turn the img.x
and img.y into
map coordinates. Imgext is the extent of the map you clicked in.
Steve
>>> On 11/3/2008 at 5:51 AM, in message
<[EMAIL PROTECTED]>, "Denis Rykov"
<[EMAIL PROTECTED]> wrote:
> Hi all! This is my map-file:
>
> MAP
> IMAGETYPE GIF
> EXTENT 77.892399 49.045435 87.227800 56.044065
> SIZE 800 600
> WEB
> TEMPLATE "/ms4w/apps/mslocal/templates/exampleGL.html"
> IMAGEPATH "/ms4w/tmp/ms_tmp/"
> IMAGEURL "/ms_tmp/"
> END
> LAYER
> NAME "roads"
> CONNECTIONTYPE postgis
> CONNECTION "user=postgres password=gaster84 dbname=city host=localhost"
>
> DATA "the_geom from (SELECT the_geom,gid, distance(the_geom,
> geometryfromtext('POINT(' || (%mx% + %img.x% * %mw% / %iw%) || ' '
> || (%my% - %img.y% * %mh% / %ih%) || ')',4326)) AS dist FROM
> roads) as foo using srid=4326 using unique gid"
>
> TYPE LINE
> ...
>
> When i insert url such as
> http://localhost/cgi-bin/mapserv.exe?map=/ms4w/apps/mslocal/map/exampleGL.map&;
>
> layer=roads&mx=77&my=87&iw=800&ih=600&mw=10&mh=7&mode=browse&img.x=400&img.y=400
> MapServer returns error
>
> msDrawMap(): Image handling error. Unable to initialize image.
> msCalculateScale(): General error message. Invalid image extent,
> minx=-1.000000, miny=-1.000000, maxx=-1.000000, maxy=-1.000000.
> msCalculateScale(): General error message. Invalid image extent,
> minx=-1.000000, miny=-1.000000, maxx=-1.000000, maxy=-1.000000.
>
> If i use map file (fragment):
>
> DATA "the_geom from (SELECT the_geom,gid, distance(the_geom,
> geometryfromtext('POINT(' || (%mx% + %imgx% * %mw% / %iw%) || ' '
> || (%my% - %imgy% * %mh% / %ih%) || ')',4326)) AS dist FROM
> roads) as foo using srid=4326 using unique gid"
>
> and url
> http://localhost/cgi-bin/mapserv.exe?map=/ms4w/apps/mslocal/map/exampleGL2.ma
> p&layer=roads&mx=77&my=56&iw=800&ih=600&mw=10&mh=7&mode=browse&imgx=400&imgy=400
> MapServer works correctly and generate map. If i click on map then img.x and
> img.y automatically added to url and MapServer returns error such i write
> above.
>
> Please help me. I want, that mouse click coordinates returns to the mapfile.
> What I need do?
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