roundn (Mapping Toolbox)

Round numbers at specified powers of 10

Syntax

outnum = roundn(innum)
outnum = roundn(innum,n)

Description

outnum = roundn(innum) rounds the elements of innum to the nearest one-hundredth.

outnum = roundn(innum,n) specifies the power of 10 to which the elements of innum are rounded. For example, if n = 2, round to the nearest hundred (10²).

Examples

Using generated numbers, round them to significant tenths, ones, and tens figures (note that your original numbers could differ):

fullfig = 1000*magic(2)/7
fullfig =
    142.8571  428.5714
    571.4286  285.7143

tenths = roundn(fullfig,-1)
tenths =
    142.9000  428.6000
    571.4000  285.7000

units = roundn(fullfig,0)
units =
    143   429
    571   286

tens = roundn(fullfig,1)
tens =
    140   430
    570   290