EPSG code for...
Dean C. Mikkelsen
dcmikkelsen at SHAW.CA
Thu Jun 9 03:40:59 EDT 2005
Hi Chris,
If we give SPCS a try, we can use the following:
# 405: california v: nad83
<405> proj=lcc datum=NAD83
lon_0=-118 lat_1=35d28 lat_2=34d2 lat_0=33d30
x_0=2000000 y_0=500000
no_defs <>
For NAD83
And for NAD27 we can use the following:
# 407: california vii: nad27
<407> proj=lcc datum=NAD27
lon_0=-118d20 lat_1=34d25 lat_2=33d52 lat_0=34d8
x_0=1276106.450596901 y_0=1268253.006858014
no_defs <>
Note the change in Zones. Los Angeles County was in CALIFORNIA ZONE VII.
ZONE VII was eliminated
for NAD83 with Los Angeles County being included with ZONE V.
This should hopefully solve the shift problem you are seeing. I would
aim towards the NAD27 variant for the original projection being defined
and then aim at projecting out in NAD83.
Let me know what happens.
Cheers,
Dean
Consultant, Terra ETL Ltd.
North Vancouver, BC
Canada
Phone: +1 604 929 8630
E-mail: dcmikkelsen at shaw.ca
-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Christopher R. Thorne
Sent: Wednesday, June 08, 2005 11:35 AM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] EPSG code for...
I was worried about that ;) Unfortunately, it is not an easy thing to
pin point what the projection actually is.
Thanks again,
Chris
Dean C. Mikkelsen wrote:
> Hi Ken,
>
> Thanks for the information.
>
> The other problem I was looking at is that it may be a State Plane
> Coordinate System as well.
>
> California is divided into many zones and the dataset being worked
> with
> did not include some of the projection information.
>
> Cheers,
> Dean
>
> Consultant, Terra ETL Ltd.
> North Vancouver, BC
> Canada
> Phone: +1 604 929 8630
> E-mail: dcmikkelsen at shaw.ca <mailto:dcmikkelsen at shaw.ca>
>
> -----Original Message-----
> *From:* UMN MapServer Users List
> [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] *On Behalf Of *Ken Lord
> *Sent:* Tuesday, June 07, 2005 12:44 PM
> *To:* MAPSERVER-USERS at LISTS.UMN.EDU
> *Subject:* Re: [UMN_MAPSERVER-USERS] EPSG code for...
>
> Dean,
>
> Make sure you have the Proj software installed, there's
information
> about it here:
>
> http://www.maptools.org/maplab/index.phtml?page=maplab_windows.txt
>
> and here:
>
> http://www.remotesensing.org/proj/
> <http://proj.maptools.org/>
> If you haven't already, grab the windows binaries, unzip and place
> the Proj folder on your C drive.
>
> C:/Proj
>
> Cheers,
> Ken Lord
> Vancouver BC
>
>
>
>
> On 6/7/05, *Christopher R. Thorne* <christhorne at sympatico.ca
> <mailto:christhorne at sympatico.ca>> wrote:
>
> Dean C. Mikkelsen wrote:
> > Hi Chris,
> >
> > It may be a directory problem, MapServer is not reading the
> CONUS or
> > NAD27/NAD83 files correctly in the proj directory.
> >
> > Are you using the MS4W or a later version of MapServer?
>
> I am using the latest version of ms4w, with Chameleon using
> MapServer 4.4.2
>
> Any suggestions?
>
> >
> > Cheers,
> > Dean
> >
> > Dean C. Mikkelsen, B.Sc.,P.Eng.
> > Consultant, Terra ETL Ltd.
> > North Vancouver, BC
> > Canada
> > Phone: +1 604 929 8630
> > E-mail: dcmikkelsen at shaw.ca <mailto:dcmikkelsen at shaw.ca>
> >
> >
> >
> > -----Original Message-----
> > From: Christopher R. Thorne
[mailto:christhorne at sympatico.ca
> <mailto:christhorne at sympatico.ca>]
> > Sent: Monday, June 06, 2005 4:10 PM
> > To: Dean C. Mikkelsen
> > Cc: MAPSERVER-USERS at LISTS.UMN.EDU
> <mailto:MAPSERVER-USERS at LISTS.UMN.EDU>
> > Subject: Re: [UMN_MAPSERVER-USERS] EPSG code for...
> >
> >
> > Yes I used these projections where
> >
> > 26911 NAD 83 is the projection of the mapfile and where
NAD27
> <26711> is
> >
> > being reprojected.
> >
> > See first attached image to see how messed up the Nad27
layer
> gets.
> >
> > If I don't define projection you can see the a shift
between
> the line
> > layer and the solid polygon layers.
> >
> > Comments/suggestions??
> >
> > Thanks
> > Chris
> >
> > Dean C. Mikkelsen wrote:
> >
> >>Hi Chris,
> >>
> >>Did you try the following?
> >>
> >># NAD27 / UTM zone 11N
> >><26711> +proj=utm +zone=11 +ellps=clrk66 +datum=NAD27
+units=m
> >>no_defs <>
> >>
> >># NAD83 / UTM zone 11N
> >><26911> +proj=utm +zone=11 +ellps=GRS80 +datum=NAD83
> +units=m no_defs
> >
> >
> >><>
> >>
> >>Cheers,
> >>Dean
> >>
> >>Dean C. Mikkelsen, B.Sc.,P.Eng.
> >>Consultant, Terra ETL Ltd.
> >>North Vancouver, BC
> >>Canada
> >>Phone: +1 604 929 8630
> >>E-mail: dcmikkelsen at shaw.ca <mailto:dcmikkelsen at shaw.ca>
> >>
> >>
> >>
> >>-----Original Message-----
> >>From: UMN MapServer Users List
> [mailto:MAPSERVER-USERS at LISTS.UMN.EDU
> <mailto:MAPSERVER-USERS at LISTS.UMN.EDU>]
> >>On Behalf Of Christopher R. Thorne
> >>Sent: Monday, June 06, 2005 3:29 PM
> >>To: MAPSERVER-USERS at LISTS.UMN.EDU
> <mailto:MAPSERVER-USERS at LISTS.UMN.EDU>
> >>Subject: [UMN_MAPSERVER-USERS] EPSG code for...
> >>
> >>
> >>Hello all,
> >>
> >>If you were given the following information for two
> projections for
> >>California LA County region.
> >>
> >>
> >>NAD83 UTM Zone 11 meters
> >>
> >>NAD27 UTM Zone 11 meters
> >>
> >>What would be your suggested codes? I have tried a few but
> can not
> >>seem
> >>to get it.
> >>
> >>Thanks
> >>Chris
> >>
> >>
> >
> >
> >
>
>
> --
> Christopher R. Thorne, GIS Specialist
> --
> 3406 Southgate Rd. Ottawa ON K1V 9P9
> christhorne at sympatico.ca <mailto:christhorne at sympatico.ca>
> Tel:(613)523-6593
--
Christopher R. Thorne, GIS Specialist
--
3406 Southgate Rd. Ottawa ON K1V 9P9
christhorne at sympatico.ca
Tel:(613)523-6593
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