How to remove values from a data set to make it a specific length?

I will explain myself better:

If I have

xdata = [ 1 2 3 4 5 6 7 8 ]

ydata = [ 1 2 3 4 5 6 ]

if I want to plot(xdata,ydata) it will say that the vectors must be the same length and I cannot plot it. Instead of going to my specific data set and manually deleting values, I would like xdata to have the same length as ydata. Somehow deleting those values, making them = [ ], so that both of them have the same length.

[Suuz HMS]

Hi! I have a question related to this one. How would you delete the last values of xdata, so in this case 7 and 8, so that they are of the same length?

Thanks!

[Voss]

@Suuz Schouten:

xdata = [ 1 2 3 4 5 6 7 8 ];
ydata = [ 1 2 3 4 5 6 ];

% n is the minimum of {number of elements in xdata, number of elements in ydata}
n = min(numel(xdata),numel(ydata));

xdata_new = xdata(1:n);
ydata_new = ydata(1:n);

[Dyuman Joshi]

@Suuz Schouten, if you go through Voss's answer below, you will find the logic (and implementation as well) for that.

Answer 1

[Voss]

If that's what you want to do

xdata = [ 1 2 3 4 5 6 7 8 ];
ydata = [ 1 2 3 4 5 6 ];

% n is the minimum of {number of elements in xdata, number of elements in ydata}
n = min(numel(xdata),numel(ydata));

% plot the first n elements of ydata vs the first n elements of xdata
plot(xdata(1:n),ydata(1:n))

[Alfredo Scigliani]

that works too!