[OSRS-PROJ] Rectified Skew Orthomorphic...EPSG

[John Smart]

Gerald et al

These are some parameters and test points which have been used by CARIS for
Borneo RSO. As far as I can recall, these parameters were tested against
some local clients' survey calcution programs.

Scaling lat        4-00-00.000N
Central meridian  115-00-00.000E
Skew Azimuth       53-07-48.3680
Scaling factor     0.999840
False North  5000000
False East  2000000
Ellipsoid a, b: 6377298.560 6356097.554

geographic:
5-00-39.3328N  115-02-46.4797E
4-51-17.2684N  114-55-50.4365E
4-00-00.000N   115-00-00.000E
2-25-30.000N   111-08-00.000E
2-30-00.000N   111-16-00.000E
2-25-30.000N   111-16-00.000E

grid:
2595244.677 5554640.242
2582484.393 5537337.229
2590476.87  5442857.66
2161074.28  5268121.72
2175900.30  5276416.44
2175901.71  5268123.87

If I can be of further assistance, let me know. Incidentally, I have the
same kind of thing for Malayan RSO.

John Smart - Senior GIS Analyst
Marine Division
CARIS      www.caris.com
Tel:     +1-506-458-8533   Fax:   +1-506-459-3849

CARIS has expanded to new office facilities. Our new mailing address is:
115 Waggoners Lane, Fredericton, New Brunswick, E3B 2L4, Canada.

----- Original Message -----
From: "Gerald Evenden" <gerald.evenden at verizon.net>
To: <osrs-proj at remotesensing.org>
Sent: Saturday, February 07, 2004 2:30 PM
Subject: Re: [OSRS-PROJ] Rectified Skew Orthomorphic...EPSG


> An additional insight on the Hotine.
>
> Axis rotation point may also vary.  In Alaska and Borneo the point of
> axis rotation is at the map's central point (lonc, phi_0).  In the case
> of the Malayan system, rotation looks to be at the aposphere
> equator and lambda_0.
>
> Thus it appears that I need to reestablish the +no_uoff option of
> the old PJ_omerc---Malaya was apparently the reason it was there.
> I believe I will change the name of the option because the uoff
> part is not that clear without reading the math.
>
> I presume nobody in this group is using it nor even aware of it
> presence.  :-)
> _____________________________________
> Jerry and the low riders: Daisy Mae and Joshua
>
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