# How to plot different length vectors against each other?

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Keshav on 6 Dec 2023
Commented: Steven Lord on 6 Dec 2023
I've used ode45 to find t against x and t against y. The plot I want to create is of x against y.
However the x vector has a length of 113 compared to 1849 for y because of the differences in timestep.
Is there a way to interpolate and plot(x,y)? Or perhaps to specify that ode45 creates more x values.

Torsten on 6 Dec 2023
Moved: Torsten on 6 Dec 2023
However the x vector has a length of 113 compared to 1849 for y because of the differences in timestep.
Solve for x and y together in one call to ode45. Then the solutions for x and y will have the same number of elements.
Steven Lord on 6 Dec 2023
Or if you must solve them in separate calls to ode45, either pass the times from the first as the tspan in the second call or call them each with one output and use the deval function on that struct output to evaluate the solutions at a common list of times.

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