topdowntimeratio

Top-Down Time Ratio Segmentation for Coordinate Trajectories

v0.1.0 · Sep 22, 2022 · GPL (>= 3)

Description

Data collected on movement behavior is often in the form of time- stamped latitude/longitude coordinates sampled from the underlying movement behavior. These data can be compressed into a set of segments via the Top- Down Time Ratio Segmentation method described in Meratnia and de By (2004) <doi:10.1007/978-3-540-24741-8_44> which, with some loss of information, can both reduce the size of the data as well as provide corrective smoothing mechanisms to help reduce the impact of measurement error. This is an improvement on the well-known Douglas-Peucker algorithm for segmentation that operates not on the basis of perpendicular distances. Top-Down Time Ratio segmentation allows for disparate sampling time intervals by calculating the distance between locations and segments with respect to time. Provided a trajectory with timestamps, tdtr() returns a set of straight- line segments that can represent the full trajectory. McCool, Lugtig, and Schouten (2022) <doi:10.1007/s11116-022-10328-2> describe this method as implemented here in more detail.

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13 NOTE

Show all 13 flavors

Flavor	Status	Time
r-devel-linux-x86_64-debian-clang	NOTE	40.4s
r-devel-linux-x86_64-debian-gcc	NOTE	30.2s
r-devel-linux-x86_64-fedora-clang	NOTE	58.1s
r-devel-linux-x86_64-fedora-gcc	NOTE	56s
r-devel-windows-x86_64	NOTE	59s
r-oldrel-macos-arm64	NOTE
r-oldrel-macos-x86_64	NOTE	31s
r-oldrel-windows-x86_64	NOTE	64s
r-patched-linux-x86_64	NOTE	34.9s
r-release-linux-x86_64	NOTE
r-release-macos-arm64	NOTE	12s
r-release-macos-x86_64	NOTE	41s
r-release-windows-x86_64	NOTE	56s

Check details (13 non-OK)

NOTE r-devel-linux-x86_64-debian-clang

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-debian-gcc

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-fedora-clang

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-fedora-gcc

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-windows-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-macos-arm64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-macos-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-windows-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-patched-linux-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-linux-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-macos-arm64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-macos-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-windows-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

Check History

NOTE 0 OK · 13 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Jun 8, 2026

NOTE r-devel-linux-x86_64-debian-clang

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-debian-gcc

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-fedora-clang

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-fedora-gcc

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-windows-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-patched-linux-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-linux-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-macos-arm64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-macos-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-windows-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-macos-arm64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-macos-x86_64

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checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-windows-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

ERROR 0 OK · 12 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE Jun 7, 2026

NOTE r-devel-linux-x86_64-debian-clang

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

ERROR r-devel-linux-x86_64-debian-gcc

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-fedora-clang

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-fedora-gcc

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-windows-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-patched-linux-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-linux-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-macos-arm64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-macos-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-windows-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-macos-arm64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-macos-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-windows-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE 0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

NOTE r-devel-linux-x86_64-debian-clang

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-debian-gcc

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-fedora-clang

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-linux-x86_64-fedora-gcc

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-macos-arm64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-devel-windows-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-patched-linux-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-linux-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-macos-arm64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-macos-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-release-windows-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-macos-arm64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-macos-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^

NOTE r-oldrel-windows-x86_64

Rd files

checkRd: (-1) getSegsExtra.Rd:14: Lost braces
    14 | \item{data}{data.table returned from function /code{tdtr}}
       |                                                    ^