./

map_init.pro

result = map_init( [center=center] [, width=width] [, pixwidth=pixwidth] [, pixscale=pixscale] [, coordsys=coordsys] [, type=type], _extra=_extra)

This function creates a blank image and fits header, based on input parameters describing the desired image size and orientation.

center in optional: A 2 element array specifying the sky location of the center pixel. The coordinate system can be specified with COORDSYS. This keyword is required.
width in optional: The width of the image in DEGREES. A one or two element vector. If width is not specified, both pixwidth and pixscale must be.
pixwidth in optional: The width of the image in PIXELS. A one or two element vector. If pixwidth is not specified, both width and pixscale must be.
pixscale in optional: The size of an individual pixel in DEGREES. A one or two element vector. If not specified, both width and pixwidth must be.
coordsys in optional: An optional string indicating which coordinate system to use. Options are FK5 and GAL. Default is FK5
type in optional: The data type to use for the image. Default is 'FLOAT'.
_extra

History:: March 2010: Written by Chris Beaumont December 2010: Fixed a big when checking type of coordsys

Modifcation date:	Tue Dec 7 16:06:10 2010
Lines:	145