wn_get_world_coords_c

	status.i4.v = wn_get_world_coords_c(window_id.i4.v, xmin.r4.r,
					    ymin.r4.r, xmax.r4.r, ymax.r4.r
					    [,x_scale_type.i4.r]
					    [,y_scale_type.i4.r])

	This routine returns the world coordinates for a graphics window.

	window_id	window ID (use WN_BACKGROUND for background window)
	xmin, ymin	returned lower left hand corner of window
	xmax, ymax	returned upper right hand corner of window
	[x_scale_type]	returned scale type for x-axis
			(WN_SCALE_LINEAR -> linear scaling,
			 WN_SCALE_LOG10 -> base 10 log scaling,
			 WN_SCALE_NATURAL_LOG -> natural log scaling)
	[y_scale_type]	returned scale type for y-axis
			(WN_SCALE_LINEAR -> linear scaling,
			 WN_SCALE_LOG10 -> base 10 log scaling,
			 WN_SCALE_NATURAL_LOG -> natural log scaling)

	This function returns ACNET status values as follows:

	OK			success
	CBS_INVARG		invalid ID value
	CBS_INVID		this window doesn't exist
	CBS_NOSETUP		scaling for this window hasn't been established

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	wn_get_view_coords_c, wn_view(_c), wn_world(_c), intro_graphics_windows

	C/C++ usage:

	int	status;
	int	window_id;
	int	x_scale_type;
	int	y_scale_type;
	float	xmin;
	float	ymin;
	float	xmax;
	float	ymax;

	status = wn_get_world_coords_c(window_id,&xmin,&ymin,&xmax,&ymax,
				       &x_scale_type,&y_scale_type);