[mapserver-users] How to display coordinates in lat/long format on a map with UNITS=Meters?
Jamie Smedsmo
jsmedsmo at gis.umn.edu
Wed Mar 27 17:37:08 EST 2002
I wrote to Vinko, the author of that document, and he said...
If i recall correctly, the projection is Transverse Mercator,
spheroid WGS84, False Easting and Northing 0, Scale Factor 0.9996
(UTM).
I have the shape in lat/long and i could send it to anybody who wants
it.
Jamie
Ed McNierney wrote:
>MapServer-folks:
>
>I can't find any documentation on the projection used in the Europe map
>in the example Jan's using (see below). Can anyone help?
>
> - Ed
>
>
>Ed McNierney
>Chief Mapmaker
>TopoZone.com
>ed at topozone.com
>(978) 251-4242
>
>
>-----Original Message-----
>From: Jan Mantkowski [mailto:jan.mantkowski at gmx.de]
>Sent: Wednesday, March 27, 2002 11:06 AM
>To: Ed McNierney
>Cc: Mapserver-Users
>Subject: RE: [mapserver-users] How to display coordinates in lat/long
>format on a map with UNITS=Meters?
>
>
>Hi Ed,
>
>its the europa example from
>http://mapserver.gis.umn.edu/doc/phpmapscript-byexample-howto.html
>
>All i know about the shapefiles is from the shpdump:
>
>Shapefile Type: Polygon # of Shapes: 54
>
>File Bounds: (-4362443.744, 3864199.098,4.16405e+202,0)
> to ( 2916998.546, 9336805.431,0,0)
>
>Shape:0 (Polygon) nVertices=1258, nParts=4
> Bounds:( 31629.715, 4389343.606, 0, 0)
> to ( 183200.478, 4723802.771, 0, 0)
> ( 50395.681, 4534532.400, 0, 0) Ring
> ( 50773.355, 4534413.439, 0, 0)
> ( 50663.630, 4533848.958, 0, 0)
> ( 50310.488, 4533921.135, 0, 0)
> ( 50249.606, 4534320.032, 0, 0)
> ( 50395.681, 4534532.400, 0, 0)
> + ( 51767.905, 4533962.997, 0, 0) Ring
> ( 51513.193, 4533847.753, 0, 0)
> ( 51218.772, 4534212.374, 0, 0)
> ( 51357.135, 4534404.725, 0, 0)
> ( 51692.574, 4534310.938, 0, 0)
> ( 51767.905, 4533962.997, 0, 0)
> + ( 33686.562, 4480980.435, 0, 0) Ring
> ( 33076.118, 4481226.240, 0, 0)
> ( 32559.723, 4482578.622, 0, 0)
> ( 32166.277, 4482948.215, 0, 0)
>
>The original europe.map looks like this:
>
>NAME FIRSTMAP
>SIZE 400 400
>STATUS ON
>SYMBOLSET ../symbols/symbols.sym
>EXTENT -5696501 1923039 5696501 11022882
>UNITS METERS
>SHAPEPATH "../data"
>
>WEB
>IMAGEPATH "/var/www/html/ms/tmp/"
>IMAGEURL "/tmp/"
>END
>
>LAYER
>NAME world
>TYPE POLYGON
>STATUS ON
>DATA europa
> CLASS
> TEMPLATE void
> COLOR 110 50 100
> OUTLINECOLOR 200 200 200
> #END
> END
> TOLERANCE 10
>END
>
>END
>
>
>Thanks for your help.
>
>Jan
>
>
>
>
>-----Original Message-----
>From: Ed McNierney [mailto:ed at topozone.com]
>Sent: Wednesday, March 27, 2002 3:49 PM
>To: Jan Mantkowski; Mapserver-Users
>Subject: RE: [mapserver-users] How to display coordinates in lat/long
>format on a map with UNITS=Meters?
>
>
>Jan -
>
>What you need to do is to convert your map / shapefile coordinates to
>lat/long. That's certainly something you can do, but you need to know
>what projection the map data uses before you can do that - otherwise
>it's like trying to translate a foreign language to French without
>knowing what the foreign language is!
>
>What information do you have about the shapefiles and their projection?
>
> - Ed
>
>Ed McNierney
>Chief Mapmaker
>TopoZone.com
>ed at topozone.com
>(978) 251-4242
>
>
>-----Original Message-----
>From: Jan Mantkowski [mailto:jan.mantkowski at gmx.de]
>Sent: Wednesday, March 27, 2002 7:48 AM
>To: Mapserver-Users
>Subject: [mapserver-users] How to display coordinates in lat/long format
>on a map with UNITS=Meters?
>
>
>Hi all,
>
>i have a map with UNITS=Meters. (Still the europa example.)
>What i do right now is to save coordinates in meters format as a layer.
>(I
>really do not know what this meters mean, i choosed the coordinates to
>be
>"inside" the extent, thats all).
>
>Then i dispaly them together with the map data which is in meters to.
>There are no projection settings at all right now.
>
>So what do i need to do to display real lat /long data instead of that
>artificial data?
>
>Jan
>
>
>
>
>I add the complete current europa.map:
>
>
>NAME FIRSTMAP
>SIZE 400 400
>STATUS ON
>EXTENT -5696501 1923039 5696501 11022882
>UNITS Meters
>
>SYMBOLSET "C:\Apache\htdocs\pn_71\html\modules\map5\symbols\symbols.txt"
>FONTSET "C:\Apache\htdocs\pn_71\html\modules\map5\fonts\fonts.txt"
>SHAPEPATH "C:\Apache\htdocs\pn_71\html\modules\map5\data"
>IMAGECOLOR 255 255 255
>
>WEB
>IMAGEPATH "c:\Apache\htdocs\tmp\"
>IMAGEURL "/tmp/"
>END
>
>LAYER
>NAME world
>TYPE POLYGON
>STATUS ON
>DATA europa
> CLASS
> TEMPLATE void
> COLOR 200 200 200
> OUTLINECOLOR 0 0 0
> #END
> END
> TOLERANCE 10
>END
>
>LAYER
> NAME "X"
> DATA users
> STATUS ON
> TYPE POINT
> CLASS
> COLOR 255 0 0
> SYMBOL 'circle'
> SIZE 10
> END
>END
>
> LAYER
> NAME "PN"
> DATA users
> STATUS ON
> TYPE ANNOTATION
> LABELITEM "username"
> SYMBOLSCALE 250000
> CLASS
> COLOR -1 -1 -1 # no marker will be drawn
> LABEL
> POSITION AUTO
> SIZE MEDIUM
> COLOR 132 31 31
> OUTLINECOLOR 255 255 255
> BUFFER 4
> END
> END
> END
>
>
>
>END
>
>
>
>
>
>
>This is the shpdump:
>C:\a>shpdump.exe europa.shp > europa.txt
>Shapefile Type: Polygon # of Shapes: 54
>File Bounds: (-4362443.744, 3864199.098,4.16405e+202,0)
> to ( 2916998.546, 9336805.431,0,0)
>
>Shape:0 (Polygon) nVertices=1258, nParts=4
> Bounds:( 31629.715, 4389343.606, 0, 0)
> to ( 183200.478, 4723802.771, 0, 0)
> The File Bounds: (MINX, MINY, MINZ, MINV)
>
> to (MAXX, MAXY, MAXZ, MAXV)
> and
> EXTENT MINX MINY MAXX MAXY
>
>
>
>
>
>
>
>
>
>
>
>
>-----Original Message-----
>From: owner-mapserver-users at lists.gis.umn.edu
>[mailto:owner-mapserver-users at lists.gis.umn.edu]On Behalf Of Tyler
>Mitchell
>Sent: Tuesday, March 26, 2002 3:52 PM
>To: Jan Mantkowski
>Cc: mapserver-users at lists.gis.umn.edu
>Subject: Re: [mapserver-users] How to display coordinates in lat/long
>format on amap with UNITS=Meters?
>
>
>
>Have you looked into the PROJECTION parameters for your map file at all?
>It sounds like you will want to set the PROJECTION for the whole map to
>Decimal Degrees, then within each LAYER section define what the input
>PROJECTION is. If this sounds like what you are trying to do - then you
>will need to get PROJECTION settings under your belt. I think you will
>be
>changing your UNITS parameter to something like DD for decimal degrees.
>I
>haven't done it before though. Someone else can probably comment with
>some
>more intelligence.
>
>
>
> "Jan Mantkowski"
> <jan.mantkowski at gmx.de> To:
>"Mapserver-Users" <mapserver-users at lists.gis.umn.edu>
> Sent by: cc:
> owner-mapserver-users at lists.g Fax to:
> is.umn.edu Subject:
>[mapserver-users] How to display coordinates in lat/long
> format on a map
>with UNITS=Meters?
>
> 03/26/2002 12:50 AM
>
>
>
>
>
>
>Hi list,
>
>i got stuck again.
>It´s still the europa example.
>
>What i do right now is to make shapefiles from "artificial" coordinates.
>(Choosen to fit the EXTENT)
>It works.
>
>But, when i have coordinats in latitude and longitude, how to display
>the
>resulting layer correct on the map that is in Meters?
>
>I did a shpdump and got this:
>
>Shapefile Type: Polygon # of Shapes: 54
>File Bounds: (-4362443.744, 3864199.098,4.16405e+202,0)
> to ( 2916998.546, 9336805.431,0,0)
>Shape:0 (Polygon) nVertices=1258, nParts=4
>Bounds:( 31629.715, 4389343.606, 0, 0)
> to ( 183200.478, 4723802.771, 0, 0)
>
>
>The europa.map looks like this:
>NAME FIRSTMAP
>SIZE 400 400
>STATUS ON
>EXTENT -5696501 1923039 5696501 11022882
>UNITS Meters
>...
>
>The layer to display the data in meter format looks like this:
>
>LAYER
> NAME "X"
> DATA users
> STATUS ON
> TYPE POINT
> CLASS
> COLOR 255 0 0
> SYMBOL 'circle'
> SIZE 10
> END
>END
>
>What do i need to change to make it to display data in latitude
>longitude
>format?
>
>Thanks,
>
>Jan
>
>
>
>
>
>
>
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