inttrap

Scilab Function
Last update : April 1993

inttrap - integration of experimental data by trapezoidal interpolation

### Calling Sequence

  `v = inttrap([x,] s)`

### Parameters

- `x` : vector of increasing x coordinate data. Default value is `1:size(y,'*')`
- `s` : vector of y coordinate data
- `v` : value of the integral

### Description

computes :

Where f is a function described by a set of experimental value:

`s(i)=f(x(i))` and `x0=x(1)` , `x1=x(n)`

Between mesh points function is interpolated linearly.

### Examples

    t=0:0.1:%pi
    inttrap(t,sin(t))

### See Also

`intg` , `intc` , `intl` , `integrate` , `intsplin` , `splin` ,