电力系统分析计算程序

				function [x,y,s] = mask(a,idx,orient,vals)								[xc,yc] = fm_draw('circle','Rsrv',orient);				[xr,yr] = fm_draw('R','Rsrv',orient);								x = cell(2,1);				y = cell(2,1);				s = cell(2,1);								x{1} = xc;				y{1} = yc;				s{1} = 'k';								x{2} = 0.5*xr;				y{2} = yr;				s{2} = 'b';