EPSG code for...
Christopher R. Thorne
christhorne at SYMPATICO.CA
Fri Jun 10 14:09:37 PDT 2005
Dave,
Thanks for all your help i feel we are either very closer or this is
really bad data??
I tried the these epsg codes and well see image. NAD83 layer is to the
left and NAD27 layer is to the right. I had to find the layer by
converting the map output to espg:4326 Lat/Long.
What do you make of it?
Chris
Dean C. Mikkelsen wrote:
> 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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