# as.Track.arrow: Convert trajectory pattern to a list of marked point patterns In trajectories: Classes and Methods for Trajectory Data

## Description

Converting a list of Track objects to a list of marked point patterns. Each mark shows the length of movement.

## Usage

 `1` ```as.Track.arrow(X,timestamp,epsilon=epsilon) ```

## Arguments

 `X` A list of Track objects `timestamp` based on secs, mins,... `epsilon` (optional) movements with length less than epsilon are not considered in the calculation

## Details

Converting a list of Track objetcs to a list of marked point patterns. Marks show the length of movement with respect to the previous location.

## Value

a list of marked point patterns.

## Author(s)

 ```1 2 3 4 5 6``` ```X <- list() for(i in 1:10){ m <- matrix(c(0,10,0,10),nrow=2,byrow = TRUE) X[[i]] <- rTrack(bbox = m,transform = TRUE) } Y <- as.Track.arrow(X,timestamp="120 secs") ```
{"ft_lang_label":"__label__en","ft_lang_prob":0.74483377,"math_prob":0.92331105,"size":760,"snap":"2022-40-2023-06","text_gpt3_token_len":181,"char_repetition_ratio":0.13095239,"word_repetition_ratio":0.084033616,"special_character_ratio":0.21842106,"punctuation_ratio":0.1409396,"nsfw_num_words":0,"has_unicode_error":false,"math_prob_llama3":0.9763306,"pos_list":[0],"im_url_duplicate_count":[null],"WARC_HEADER":"{\"WARC-Type\":\"response\",\"WARC-Date\":\"2022-09-25T02:40:33Z\",\"WARC-Record-ID\":\"<urn:uuid:3af2a9e6-1bfe-4711-a3c8-b2903de7ad6c>\",\"Content-Length\":\"46232\",\"Content-Type\":\"application/http; msgtype=response\",\"WARC-Warcinfo-ID\":\"<urn:uuid:1cf411f7-9d5c-4250-b41c-708ed4d1266f>\",\"WARC-Concurrent-To\":\"<urn:uuid:01f1dc0b-0ea5-4ea4-939e-7b8ff7642218>\",\"WARC-IP-Address\":\"51.81.83.12\",\"WARC-Target-URI\":\"https://rdrr.io/cran/trajectories/man/as.Track.arrow.html\",\"WARC-Payload-Digest\":\"sha1:AT7RGIPSCEC2AVJDIWEUCD5SM6N7BLQY\",\"WARC-Block-Digest\":\"sha1:ZYKEFSJR23P3ATJJJK2W4RS6752WM2B4\",\"WARC-Identified-Payload-Type\":\"text/html\",\"warc_filename\":\"/cc_download/warc_2022/CC-MAIN-2022-40/CC-MAIN-2022-40_segments_1664030334332.96_warc_CC-MAIN-20220925004536-20220925034536-00646.warc.gz\"}"}