nwasc_segmentCTS: Segment CTS data from the NWASC

In robgf/nwasc:

Description

This is a wrapper function that takes queries from the observations, tracks and transects.

Usage

nwasc_segmentCTS(observations, tracks, transects, seg.length = 4,
  seg.tol = 0.5, seg.min = seg.length * seg.tol, maxDist = NA)

Arguments

observations	df of observations from observation table
tracks	df of observations from tracks table (legacy translated from shapefiles)
transects	df of transect info from transect table
seg.length	numeric desired segment length
seg.tol	numeric minimal proportion of seg.length to be considered a segment
seg.min	calculated shortest length of a valid segment
maxDist	maximum distance a observation is allowed from a segment NA ignores this feature

Value

df wide format segment cts data

Note on names

The following columns are need from each of the tables. transects: "start_dt", "dataset_id", "source_dataset_id", "segmented_transect_id" (renamed from source_transect_id in query!) "transect_id", "transect_width_nb", "survey_type_cd", "survey_method_cd" tracks: (this historically was also created from shapefiles example in raw-data/) "lat", "long", "transect_id", "dataset_id, "piece", "order". observations: "transect_id", "lat", "long", "spp_cd", "count"

WARNING

double check names, with special attention to renaming source_transect_id as "segmented_transect_id"

Examples

## Not run: 
seg.dat.phase2 = segmentCTS(nwasc.ph2.obs.pre,
                            nwasc.ph2.shp.pre,
                            nwasc.ph2.cts.dat,
                            seg.min = 0.0)

seg.dat.phase1.cts = segmentCTS(nwasc.ph1.obs.pre,
                                nwasc.ph1.shp.pre,
                                nwasc.ph1.cts.dat,
                                seg.min = 0.0)

## End(Not run)

robgf/nwasc documentation built on Oct. 29, 2021, 8:13 p.m.