MATLAB 多个纵坐标

帮找了一个 Canadan 做的 应该能解决楼主的问题 复制内容到剪贴板 代码代码 function ax hlines plotyyy x1 y1 x2 y2 x3 y3 ylabels PLOTYYY Extends plotyy to include a third y axis Syntax ax hlines plotyyy x1 y1 x2 y2 x3 y3 ylabels Inputs x1 y1 are the xdata and ydata for the first axes line x2 y2 are the xdata and ydata for the second axes line x3 y3 are the xdata and ydata for the third axes line ylabels is a 3x1 cell array containing the ylabel strings Outputs ax 3x1 double array containing the axes handles hlines 3x1 double array containing the lines handles Author Denis Gilbert Ph D physical oceanography Maurice Lamontagne Institute Dept of Fisheries and Oceans Canada email gilbertd dfo mpo gc ca Web http www qc dfo mpo gc ca iml April 2000 Last revision 14 Nov 2001 if nargin 6 ylabels 1 ylabels 2 ylabels 3 elseif nargin 7 error Too many input arguments elseif nargin 6 error Not enough input arguments end figure units normalized DefaultAxesXMinorTick on DefaultAxesYminorTick on ax hlines 1 hlines 2 plotyy x1 y1 x2 y2 cfig get gcf color pos 0 1 0 1 0 7 0 8 offset pos 3 5 5 pos 3 pos 3 offset 2 set ax position pos pos3 pos 1 pos 2 pos 3 offset pos 4 limx1 get ax 1 xlim limx3 limx1 1 limx1 1 1 2 limx1 2 limx1 1 ax 3 axes Position pos3 box off Color none XColor k YColor r xtick xlim limx3 yaxislocation right hlines 3 line x3 y3 Color r Parent ax 3 limy3 get ax 3 YLim line limx1 2 limx3 2 limy3 1 limy3 1 Color cfig Parent ax 3 Clipping off axes ax 2 set get ax 1 ylabel string ylabels 1 set get ax 2 ylabel string ylabels 2 set get ax 3 ylabel string ylabels 3 实例 在 Commond Window 里运行 复制内容到剪贴板 代码代码 x 0 0 1 0 2 0 3 0 4 0 426 0 5 0 6 0 688 0 7 0 8 0 9 1 0 y 268 95 272 36 275 07 277 07 277 93 278 276 5 267 16 248 2 244 3 200 37 137 71 58 7 a 0 0 225 0 408 0 566 0 693 0 718 0 776 0 82 0 831 0 831 0 818 0 784 0 6 k 2 55 2 254 2 063 1 886 1 733 1 687 1 552 1 368 1 207 1 187 1 023 0 873 0 6 ylabels 1 轴 1 ylabels 2 轴 2 ylabels 3 轴 3 ax hlines plotyyy x y x a x k ylabels leg