k-Wave Toolbox |

# scaleSI

Scale a number to nearest SI unit prefix

## Syntax

    x_sc = scaleSI(x)
    [x_sc scale] = scaleSI(x)
    [x_sc scale prefix] = scaleSI(x)
    [x_sc scale prefix prefix_fullname] = scaleSI(x)

## Description

`scaleSI` scales the input x to use the nearest SI unit prefix while keeping 1000 > x > 1. For example, `scaleSI(0.00001)` would give `x_sc = '10u'`, `scale = 1e6`, `prefix = 'u'`, and `prefix_fullname = 'micro'`.

## Inputs

`x` | number to scale

## Outputs

`x_sc` | string of scaled input and prefix
`scale` | numeric scale factor
`prefix` | single character scale prefix
`prefix_fullname` | full SI name for prefix

## Examples

- Recording The Particle Velocity
- Defining A Gaussian Sensor Frequency Response
- Comparison Of Modelling Functions
- Photoacoustic Waveforms in 1D, 2D and 3D
- Monopole Point Source In A Homogeneous Propagation Medium
- Dipole Point Source In A Homogeneous Propagation Medium
- Steering A Linear Array
- Simulations In Three-Dimensions
- Focussed Detector in 2D
- Image Reconstruction With Compensation For Acoustic Absorption
- Source Smoothing
- Modelling Power Law Absorption

## See Also

`scaleTime`

© 2009-2012 Bradley Treeby and Ben Cox.