How to store multiple y-data of arbitrary length for a given x and plot?

I have a two column data where the each element of the second column have arbitrary length. e.g.

X=[1 2 3 4 5]'

Y= [[1 2 3] [1] [] [1 2 10 4] [1 5 2 0 3]]'

How to store this type of y-data in matlab and plot both X vs Y and Y vs X in a scatter plot? i.e. there should be three points on the graph for X=1, no point for X=0 and so on. Note: There can be no elements in some of the arrays of y.

Thanks

Answer 1

[Raj]

X=[1 2 3 4 5]';
Y= {[1 2 3] [1] [] [1 2 10 4] [1 5 2 0 3]}';

for ii=1:numel(X)
scatter((repelem(X(ii),numel(cell2mat(Y(ii))))),cell2mat(Y(ii)))
hold on
end

[Udvas.C]

Many thanks! This produces the correct X vs Y plot. But simple interchange of X and Y shows some error:

Brace indexing is not supported for variables of this type.

[Raj]

"simple interchange of X and Y" - I don't understand what you mean here. Can you give an example? If required, you can modify the code as a workaround solution. Should not be an issue.

[Udvas.C]

You can use the same data you posted. What to do if I want to just flip the plot (i.e. it plots Y vs X now; how to plot X vs Y)?

[Raj]

X=[1 2 3 4 5]'

Y= [[1 2 3] [1] [] [1 2 10 4] [1 5 2 0 3]]'

When you say Y vs X plot it means that there should be three points [1 2 3] on the graph for X=1, one point [1] for X=2, no point for X=3 and so on. The code I posted does this.

Can you elaborate what are you expecting when you say X vs Y plot?

[Udvas.C]

Let x and y denote axes. I want the y-value be 1 for x=[1 2 3]; y-value be 2 for x=[1] No point for y-value 3 and so on..

[Raj]

Something like this:

Y=[1 2 3 4 5]';
X= {[1 2 3] [1] [] [1 2 10 4] [1 5 2 0 3]}';
for ii=1:numel(X)
scatter(cell2mat(X(ii)),repelem(Y(ii),numel(cell2mat(X(ii)))))
hold on
end

[Udvas.C]

Yes, it worked. Thanks!