math: Mathematical functions

In rcdo: Wrapper of 'CDO' Operators

Mathematical functions

Description

This module contains some standard mathematical functions. All trigonometric functions calculate with radians.

Usage

cdo_abs(ifile, ofile = NULL)

cdo_acos(ifile, ofile = NULL)

cdo_asin(ifile, ofile = NULL)

cdo_atan(ifile, ofile = NULL)

cdo_cos(ifile, ofile = NULL)

cdo_exp(ifile, ofile = NULL)

cdo_int(ifile, ofile = NULL)

cdo_ln(ifile, ofile = NULL)

cdo_log10(ifile, ofile = NULL)

cdo_nint(ifile, ofile = NULL)

cdo_not(ifile, ofile = NULL)

cdo_pow(ifile, ofile = NULL)

cdo_reci(ifile, ofile = NULL)

cdo_sin(ifile, ofile = NULL)

cdo_sqr(ifile, ofile = NULL)

cdo_sqrt(ifile, ofile = NULL)

cdo_tan(ifile, ofile = NULL)

Arguments

ifile	String with the path to the input file.
ofile	String with the path to the output file.

Details

abs    Absolute value
       o(t,x) = abs(i(t,x))
int    Integer value
       o(t,x) = int(i(t,x))
nint   Nearest integer value
       o(t,x) = nint(i(t,x))
pow    Power
       o(t,x) = i(t,x)^y
sqr    Square
       o(t,x) = i(t,x)^2
sqrt   Square root
       o(t,x) = sqrt(i(t,x))
exp    Exponential
       o(t,x) = e^i(t,x)
ln     Natural logarithm
       o(t,x) = ln(i(t,x))
log10  Base 10 logarithm
       o(t,x) = log10(i(t,x))
sin    Sine
       o(t,x) = sin(i(t,x))
cos    Cosine
       o(t,x) = cos(i(t,x))
tan    Tangent
       o(t,x) = tan(i(t,x))
asin   Arc sine
       o(t,x) = asin(i(t,x))
acos   Arc cosine
       o(t,x) = acos(i(t,x))
atan   Arc tangent
       o(t,x) = atan(i(t,x))
reci   Reciprocal value
       o(t,x) = 1 / i(t,x)
not    Logical NOT
       o(t,x) = 1, if x equal 0; else 0

Value

Operators that output one or more files return a character vector to the output files.

Operators that output an indefinite number of files return a string with the basename of the files.

Operatos that don't return filenames return a character vector with the string output.

rcdo documentation built on June 8, 2025, 12:36 p.m.