`GR8_SYSTEM (ICODE)`

`GR8_PROJEC (X,Y,A,ICODE)`

Define respectively the coordinate projection system and the projection
constants. The `SYSTEM` code can be 1 for `UNKNOWN`, 2 for ` EQUATORIAL (1950.0)`, 3 for `GALACTIC`. The projection code is 0 for
`NONE`, 1 for `GNOMONIC`, 2 for `ORTHOGRAPHIC`, 3 for ` AZIMUTHAL`, 4 for `STEREOGRAPHIC`, 5 for `LAMBERT` cylindrical, 6
for `AITOFF` equal area and 7 for `RADIO` (also known as global
SINUSOIDAL) projection.

Arguments : ICODE INTEGER Input X REAL Input Projection center Y REAL Input Projection center A REAL Input Projection Angle

Gildas manager 2014-07-01