NAME:
	mk_plot_posangle
 PURPOSE:
       this program makes the plots that posangle_wfc inserts into ps or gif 
	files: log(N) vs mag where N=histogram(posangle)
 CALLING SEQUENCE:
	mk_plot_posangle,posangle,char[,class=class,ccd=ccd]
 INPUTS:
	posangle: array containing position angles to plot histograms
	char: character size to use
 OPTIONAL OUTPUT KEYOWRDS:
	class: STRING! used to make legend for the graph:'stars'
	if class not set then get: 'all'
	ccd: used for title('ccd1') 
 EXAMPLE:
	mk_plot_posangle,stars1,0.75[,class='stars', ccd='1']
 CALLED PROCEDURES:
	astrolib
 MODIFICATION HISTORY:
	2-Nov-2000  Original by Suzanne Aigrain

(See /home/xmmssc/soft/idl/pro/wfcqc/mk_plot_posangle.pro)