Logspace

Generate a logarithmically spaced numeric array.

Usage

var logspace = require( '@stdlib/math/utils/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.

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

var logspace = require( '@stdlib/math/utils/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' ) );