Rounding of Numbers

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Description

zapsmall determines a digits argument dr for calling round(x, digits = dr) such that values close to zero (compared with the maximal absolute value) are ‘zapped’, i.e., treated as 0.

Usage

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zapsmall(x, digits = getOption("digits"))

Arguments

x

a numeric or complex vector.

digits

integer indicating the precision to be used.

References

Chambers, J. M. (1998) Programming with Data. A Guide to the S Language. Springer.

Examples

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x2 <- pi * 100^(-1:3)
print(x2 / 1000, digits = 4)
zapsmall(x2 / 1000, digits = 4)

zapsmall(exp(1i*0:4*pi/2))

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