Using plotyy with multiple data sets with different dimensions

Question

I want to produce a plot with two y-axis and apply multiple datasets to one of the axis. For example

[hAx,hLine1,hLine2] = plotyy([x1',x2',x3'],[y1',y2',y3'],x4,y4);

where x1 and y1 are 1000x1-arrays, x2 and y2 are 2000x1-arrays and x3 and y3 are 3000x1-arrays. The range of the arrays is more or less the same. When i try producing this plot, MATLAB gets me an error saying

Error using horzcat Dimensions of matrices being concatenated are not consistent.

Is there any workaround for this error?

EDIT: Here's my real code, which is not working:

[hAx,hLine1,hLine2] = plotyy([erg_cm.Time.data,erg_cm.Time.data,t',t'],...
    [erg_cm.Car_FxFL.data,erg_cm.Car_FxFR.data,Fx(1,:),Fx(2,:)],...
    erg_cm.Time.data,diff);

And my original data:

• erg_cm.Time.data is 1x4001
• t is 80300x1
• erg_cm.Car_FxFL.data is 1x4001
• erg_cm.Car_FxFR.data is 1x4001
• Fx is 4x80300
• diff is 1x4001

Answer 1

Your x and y vectors are column vectors and you're trying to concatenate them horizontally, which you cannot do because they are not the same size. You want to vertically concatenate them:

[hAx,hLine1,hLine2] = plotyy([x1;x2;x3],[y1;y2;y3],x4,y4);

EDIT: This is what I'm testing with

erg_cm.Time.data = rand(1, 4001);
t =  rand(80300, 1);
erg_cm.Car_FxFL.data = rand(1, 4001);
erg_cm.Car_FxFR.data = rand(1, 4001);
Fx = rand(4, 80300);
diff = rand(1, 4001);

[hAx,hLine1,hLine2] = plotyy([erg_cm.Time.data,erg_cm.Time.data,t',t'],...
    [erg_cm.Car_FxFL.data,erg_cm.Car_FxFR.data,Fx(1,:),Fx(2,:)],...
    erg_cm.Time.data,diff);