[OSRS-PROJ] Borneo Projection
Frédéric Trastour
dev at geoimage.fr
Thu Apr 4 01:28:15 PST 2002
Hello,
I would like to define the 'RSO Borneo' projection (also called Rectified
Skew Orthomorphic Borneo Grid ) in PROJ4.
The parameters are ( from EPSG ) :
Latitude of projection centre 4 ° 0 ' 0 " N
Longitude of projection centre 115 °0 '0 "E
Azimuth of initial line 53 ° 18 ' 56,9537 "
Angle from Rectified to Skew Grid 53 °7 ' 48,3685 "
Scale factor on initial line 0,99984
Easting at projection centre 590476,87 metre
Northing at projection centre 442857,65 metre
The corresponding PROJ4 projection seems to be 'omerc'. The parameters of
this projection are:
+k_0, +lat_0, +no_rot, +no_uoff, +rot_conv, +alpha, +lonc, +x0, +y0.
In the page
http://remotesensing.org/geotiff/proj_list/hotine_oblique_mercator.html I
found that :
>While PROJ.4 dosn't have a Angle from Rectified to Skew Grid I think the
+no_rot flag is related to this parameter.
>
>+proj=omerc +lat_0=Latitude of projection center
> +lonc=Longitude of projection center
> +alpha=Azimuth of initial line
> +k_0=Scale factor on initial line
> +x_0=False Easting
> +y_0=False Northing
I don't know where to specify the 'Angle from Rectified to Skew Grid' value.
What are the parameters 'no_rot', 'no_uoff' and 'rot_conv' ?
It is possible to define this projection anyway ?
Thanks in advance.
____________________________________________________________________________
____
Frédéric Trastour - dev at geoimage.fr
GEOIMAGE (www.geoimage.fr)
Les Espaces de Sophia
80, route des lucioles
06560 SOPHIA ANTIPOLIS
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