get the regular interval x-value in data set

Hello,

Here is the my data set. These are vehicle distance (x-value), and vehicle velocity (y-value).

the x-value is sampled irregularly.

x_distance	y_velocity
0.52299	    0.000237
1.04598	    0.041598
1.56897	    0.005755
2.09196	    0.012987
2.614949	0.009894
3.137939	0.050168
3.660929	0.00584
4.183919	0.045582
4.706909	0.00007
5.229899	0.054282
5.752889	0.002132
6.275879	2.508755
6.798868	3.193212
7.321858	3.460158
7.844848	3.206859
8.367838	2.923524
8.890828	2.23533
9.413818	1.127799
9.936808	0.429399
10.459798   0.814943

I need to get the regular interval x-value in my data set

for example, if the interval of x-value is 0.3meter

x_distance	y_velocity
0.3 	    0.xxxx
0.6 	    0.xxxx
0.9 	    0.xxxx
1.2 	    0.xxxx

please help...

[Cris LaPierre]

Are you assuming a linear relationship in your data?

[Seungman Kim]

no the data is nonlinear.

[Cris LaPierre]

How should one go about estimating the velocity values then?

[Seungman Kim]

Sorry, I didn't get the exact point of your question.

I assume interpolation btw two x-value.

Answer 1

[David Hill]

You should look at interp1() function.

[Sudhir Rai]

it is not interpolation.

It is actually selecting data point at fixed interval from given matrix of x and v.