# str2double

Returns a scalar, complex number or matrix, R, after converting the
input `s`.

## Syntax

R = str2double(s)

## Inputs

`s`- Type: string | mat

## Outputs

- R
- If a conversion fails,
`Nan`is returned.

## Examples

String to scalar
conversion:

`R = str2double('2.345e+5')`

`R = 234500`

String to complex
conversion:

`R = str2double('24 + 7i')`

```
R = [Matrix] 1 x 1
24 + 7i
```

Matrix of strings to matrix of numbers
conversion:

`R = str2double(['65', '66'; '88', '92'])`

```
R = [Matrix] 2 x 1
6566
8892
```