# Logspace
> Generate a logarithmically spaced numeric array.
## Usage
```javascript
var logspace = require( '@stdlib/array/logspace' );
```
#### logspace( a, b\[, length] )
Generates a logarithmically spaced numeric `array` between `10^a` and `10^b`. If a `length` is not provided, the default output `array` length is `10`.
```javascript
var arr = logspace( 0, 2, 6 );
// returns [ 1, ~2.5, ~6.31, ~15.85, ~39.81, 100 ]
```
## Notes
- The output `array` includes the values `10^a` and `10^b`. **Beware** of floating point errors, including for the first and last `array` elements.
## Examples
```javascript
var logspace = require( '@stdlib/array/logspace' );
var out;
// Default behavior:
out = logspace( 0, 3 );
console.log( out.join( '\n' ) );
// Specify length:
out = logspace( 0, 3, 100 );
console.log( out.join( '\n' ) );
// Create an array with decremented values:
out = logspace( 3, 0, 10 );
console.log( out.join( '\n' ) );
```