Map creeping on updates

[Ed McNierney]

Gerry -

This is usually because the actual size of the displayed image doesn't
match the size of the image generated by MapServer.  For example, you
can create a map as below with:

SIZE 800 800

And display it in:

<IMG SRC="[img]" WIDTH="800" HEIGHT="600">

And that will confuse the browser coordinate calculations.

     - Ed

Ed McNierney
TopoZone.com
-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Gerry Creager N5JXS
Sent: Saturday, February 05, 2005 2:58 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] Map creeping on updates

I've got a US map with extents set to keep the map to CONUS.  The
Shapefiles (NWS CWS, States, Counties) potentially range from Alaska, to
Puerto Rico... much beyond CONUS.

When I simply try to create a new display or recenter, the map moves a
bit, like the curson was offset to the southeast if it's
click-to-recenter.  The 'imgexts' flag in the URL is set to allow
extents for the full range  (Alasoa to PR).

What've I done wrong?!?

I am including the mapfile.
*****
NAME polygon-warning
STATUS ON

# Map image size. Change size as desired
SIZE 800 800
#
# Start of web interface definition. Only the TEMPLATE parameter
# must be specified to display a map. See Mapserver documentation
#
WEB
#  HEADER NWS-test1.html
#  TEMPLATE polywarn1.html
#  FOOTER NWS-test2.html
   HEADER header2.php
   TEMPLATE polywarn1.html
   FOOTER footer2.php
#  MINSCALE
#  MAXSCALE
END

# Extent based on full extent of QGIS view
EXTENT -125 23 -65 50
UNITS dd
IMAGECOLOR 255 255 255
IMAGETYPE png
# Projection definition
# Projections are not currenlty supported. If desired, add your own
# projection information based on Mapserver documentation.
PROJECTION
          "init=epsg:4269"
#       "init=epsg:4326"
END

LAYER
   NAME nwscounties
   METADATA
     "wfs_title"         "CountyOutline"
   END
   TYPE POLYGON
   STATUS DEFAULT
   DATA /var/www/mesonet/texas/data/NWScounties.shp
   TRANSPARENCY 100
   DUMP TRUE
   CLASS
     NAME "NWScounties"
     # TEMPLATE
#    COLOR 0 0 0
     OUTLINECOLOR 160 160 160
   END
END

LAYER
   NAME nwsstates
   METADATA
     "wfs_title"     "StateOutlines"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/NWSstates.shp
   DUMP TRUE
   TRANSPARENCY 100
   CLASS
     NAME "NWSstates"
     # TEMPLATE
#    COLOR 0 0 0
     OUTLINECOLOR 0 0 0
   END
END

LAYER
   NAME ffw
   METADATA
     "wfs_title"     "FlashFlood"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/FFW.shp
   DUMP TRUE
   CLASS
     NAME "FFW"
     # TEMPLATE
     COLOR 0 255 0
     OUTLINECOLOR 0 255 0
   END
END

LAYER
   NAME smw
   METADATA
     "wfs_title"     "SpecialMarine"
     "wms_title"     "Special Marine Warnings"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/SMW.shp
   DUMP TRUE
   CLASS
     NAME "SMW"
     # TEMPLATE
     COLOR 255 255 0
     OUTLINECOLOR 255 255 0
   END
END

LAYER
   NAME svr
   METADATA
     "wfs_title"     "SevereTRW"
     "wms_title"     "Severe Thunderstorm Warnings"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/SVR.shp
   DUMP TRUE
   CLASS
     NAME "SVR"
     # TEMPLATE
     COLOR 0 0 255
     OUTLINECOLOR 0 0 255
   END
END

LAYER
   NAME tor
   METADATA
     "wfs_title"     "TOR"
     "wms_title"         "Tornado Warning"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/TOR.shp
   DUMP TRUE
   CLASS
     NAME "TOR"
     # TEMPLATE
     COLOR 255 0 0
     OUTLINECOLOR 255 0 0
   END
END

# Radar Layer
LAYER
   TYPE RASTER
   STATUS ON
   NAME radar
   METADATA
#    "wfs_title"                "CONUS Radar" ## REQUIRED
      "wms_title"                "CONUS Radar" ## REQUIRED
   END
#SIZEUNITS pixels
#  DUMP TRUE            ### REQUIRED
   DATA "/var/www/mesonet/gemdata/images/radar/USrad.gif"
   OFFSITE 255 255 255
   CLASS
     COLOR -1 -1 -1
#   NAME 'Doppler Radar Mosaic'
#    TEMPLATE "radar.html"
   END
END # LAYER

LAYER
   NAME watch-outline
   METADATA
     "wfs_title"         "WatchBox"
     "wms_title"         "Watch Outlines"
   END
   DUMP TRUE
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/WATCH.shp
#  TRANSPARENCY 65
   CLASS
     NAME "Weather Watchs"
     # TEMPLATE
     OUTLINECOLOR 255 0 255
   END
END

LAYER
   NAME CWA
   METADATA
     "wfs_title"     "CWSOutline"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/w_28de04.shp
   TRANSPARENCY 90
   DUMP TRUE
   CLASS
     NAME "CWA"
     # TEMPLATE
     # COLOR 0 0 0
     OUTLINECOLOR 128 0 140
   END
END

LAYER
   NAME ffw-outline
   METADATA
     "wfs_title"     "FFW Outline"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/FFW.shp
   DUMP TRUE
   CLASS
     NAME "FFW-outline"
     # TEMPLATE
#    COLOR 0 0 0
     OUTLINECOLOR 0 255 0
   END
END

LAYER
   NAME smw-outline
   METADATA
   "wfs_title"     "SMWOutline"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/SMW.shp
   DUMP TRUE
   CLASS
     NAME "SMW-outline"
     # TEMPLATE
     # COLOR 0 0 0
     OUTLINECOLOR 255 255 0
   END
END

LAYER
   NAME svr-outline
   METADATA
     "wfs_title"     "SVROutline"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/SVR.shp
   DUMP TRUE
   CLASS
     NAME "SVR-outline"
     # TEMPLATE
     # COLOR 0 0 0
     OUTLINECOLOR 0 0 255
   END
END

LAYER
   NAME tor-outline
   METADATA
     "wfs_title"     "TOROutline"
   END
   TYPE POLYGON
   STATUS ON
   DATA /var/www/mesonet/texas/data/TOR.shp
   DUMP TRUE
   CLASS
     NAME "TOR-outline"
     # TEMPLATE
     # COLOR 0 0 0
     OUTLINECOLOR 255 0 0
   END
END

END # Map File
*****

thanks!
gerry
--
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.847.8578
Page: 979.228.0173
Office: 903A Eller Bldg, TAMU, College Station, TX 77843