Matlab圖例里多余的線去除 legendline off

xq的問題，想把Matlab的legend點形狀不想要多余的線，即將2-4的legendline去除。

解決：

參考http://blog.csdn.net/xiaojidan2011/article/details/10208137，感謝作者。

line_fewer_markers是針對線的legendline off，對於點的legend off，我用的比較土的解決方法。即點位偏移一點點，形成線，再用作者的這個line_fewer_markers.m代碼。

xx=-7:-6;

yy=polyval(P,xx);

plot(xx,yy,'-k','Linewidth',2)

hold on

line_fewer_markers([-6.488,-6.489],[-40.829 ,-40.828],9,'color','r','marker','^','MarkerFaceColor','r','spacing','curve','LegendLine','off');

hold on

line_fewer_markers([-6.455,-6.456],[-40.097 ,-40.096],9,'color','b','marker','s','MarkerFaceColor','b','spacing','curve','LegendLine','off');

hold on

line_fewer_markers([-6.376,-6.377],[-39.691 ,-39.690],9,'color','b','marker','o','MarkerFaceColor','b','spacing','curve','LegendLine','off');

legend('降水線','120m處水','24m處水','干擾井水','Location','SouthEast')

最后結果