voxelize: Voxelize list of trajectories
In aspillaga/fishtrack3d: Analysis of Passive Acoustic Telemetry Data in 3D

Description Usage Arguments Value

This function takes a list of 3D trajectories and calculates the average proportion of time that they expend in each voxel of the grid in which the study area is divided.

1 2	voxelize(synt.list, raster, depth.int, max.lag = 24, time.step = 2, parallel = FALSE)

`synt.list`	list with data frames containing the 3D trajectories to process. Each element of the list must be a `data.frame` containing the columns `x`, `y`, `depth`, and `time.stamp` columns.
`raster`	raster dataset (`RasterLayer` object) used to establish the horizontal dimension and resolution of the 3D grid.
`depth.int`	sequence of depth values indicating the breaks into which the vertical axis is cut.
`max.lag`	maximum time period, in hours, above which the segment between two locations will not be included in the rasterization.
`time.step`	time interval, in minutes, into which the trajectory will be interpolated before the rasterization. This parameter is given to the interpPath function.
`parallel`	option to apply the function in parallel (if `TRUE`). This will be passed to the `.parallel` argument of the `ldply` function in the `plyr` package.

The function returns a RasterStack object, with one layer for each depth interval. The name of each layer corresponds to the mean depth of the interval.

aspillaga/fishtrack3d documentation built on June 4, 2019, 9:14 a.m.