detrend: detrend
In WilliamCooper/Ranadu: Functions for use with RAF aircraft data files
Description
Usage
Arguments
Details
Value
Author(s)
Examples
Description
Simple removal of mean and trend from a time series.
Usage
1
detrend(.data)
Arguments
.data
A data.frame containing variable 'Time' as the first column and
a second-column from which to remove the mean and trend.
Details
Input must be a data.frame where the first column is 'Time'
and the second is the variable from which to remove the mean and trend.
Removing the mean often provides less numerical inaccuracy, and removing
a trend (for spectral analysis) avoids the effect of a ramp function
on an fft-produced spectrum for which the time series is assumed repetitive.
For this calculation, NA values are replaced by interpolation or, where that
is not possible, by zeroes.
Value
A modified version of data[, 2] only, with mean and trend removed.
Author(s)
William Cooper
Examples
1
WilliamCooper/Ranadu documentation built on July 10, 2019, 12:40 a.m.
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Description Usage Arguments Details Value Author(s) Examples
Description
Simple removal of mean and trend from a time series.
Usage
1 | detrend(.data)
|
Arguments
.data |
A data.frame containing variable 'Time' as the first column and a second-column from which to remove the mean and trend. |
Details
Input must be a data.frame where the first column is 'Time' and the second is the variable from which to remove the mean and trend. Removing the mean often provides less numerical inaccuracy, and removing a trend (for spectral analysis) avoids the effect of a ramp function on an fft-produced spectrum for which the time series is assumed repetitive. For this calculation, NA values are replaced by interpolation or, where that is not possible, by zeroes.
Value
A modified version of data[, 2] only, with mean and trend removed.
Author(s)
William Cooper
Examples
1 |
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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