Linear interpolation for 60 points

I have a question and i would appreciate it if someone can help.

I have a matrix that contains 840 values, which represent the power output of a PV during a day for every minute. Is there any way to apply linear interpolation in order to find the power output for every second?

Graphically, i can draw the lines between every two minutes, divide each line to 60 points and take the values that i want. Is there any function in matlab for that?

Thank you!

Answer 1

[Jan]

This is a job for interp1:

data   = rand(1, 840);
minute = 1:840;
second = 1:1/60:840;
data2  = interp1(minute, data, second);