squareDisp {sojourner} | R Documentation

## squareDisp

### Description

calculate square displacement of a track/trajectory as a function of time/step. data.frame has two column, x and y also calculate dx, dy bivariate squareDispCpp is the cpp version of squareDisp

### Usage

    squareDisp(track,dt=1,resolution=0.107)
    squareDispCpp(track,dt=1,resolution=0.107)

### Arguments

`track` | track dataframe with x and y coordinates.
`dt` | time step size(in frames).
`resolution` | resolution value, default is 0.107.

### Value

- list of square displacements(dx^2 + dy^2) for varying dt values from 1 to dt

### Examples

    folder1=system.file('extdata','SWR1',package='sojourner')
    folder2=system.file('extdata','HTZ1',package='sojourner')
    trackll=compareFolder(folders=c(folder1,folder2), input=3)
    #use default filter with min=7
    filtered.trackll=filterTrack(trackll)
    track.dt=squareDisp(filtered.trackll[[1]][[1]],dt=6)

[Package sojourner version 1.8.0 Index]