一个MATLAB画图问题

whj024

请问要把两个图画在一起,X轴一样,但是Y轴需要两个坐标,我的意思是这两条曲线的Y轴的单位不一样,如一个是毫米,另一个是弧度,请问能否把这两个曲线画在一起

Jerryliu

可以把,试试plotyy:
PLOTYY Graphs with y tick labels on the left and right.
    PLOTYY(X1,Y1,X2,Y2) plots Y1 versus X1 with y-axis labeling
    on the left and plots Y2 versus X2 with y-axis labeling on
    the right.

    PLOTYY(X1,Y1,X2,Y2,FUN) uses the plotting function FUN
    instead of PLOT to produce each plot.  FUN should be a
    function handle to a plotting function, e.g. @plot, @semilogx,
    @semilogy, @loglog ,@stem, etc. that accepts the syntax H = FUN(X,Y).

    PLOTYY(X1,Y1,X2,Y2,FUN1,FUN2) uses FUN1(X1,Y1) to plot the data for
    the left axes and FUN2(X1,Y1) to plot the data for the right axes.

    [AX,H1,H2] = PLOTYY(...) returns the handles of the two axes created in
    AX and the handles of the graphics objects from each plot in H1
    and H2. AX(1) is the left axes and AX(2) is the right axes.  

    See also PLOT, @.

whj024

可以,呵呵谢谢帮助

a1385651

应该是可以的，画左右两个y轴就可以了。