bin_calculate: Get bin averages for VPR and CTD data

In vprr: Processing and Visualization of Video Plankton Recorder Data

Get bin averages for VPR and CTD data

Description

Bins CTD data for an individual cast to avoid depth averaging across tow-yo's

Usage

bin_calculate(data, binSize = 1, imageVolume, rev = FALSE)

Arguments

data	ctd data frame object including scan, salinity, temperature, depth, conductivity, time, fluor_ref, turbidity_ref, turbidity_mv, altitude, cast_id, n_roi
binSize	the height of bins over which to average, default is 1 metre
imageVolume	the volume of VPR images used for calculating concentrations (mm^3)
rev	logical value, if TRUE, binning will begin at bottom of each cast, this controls data loss due to uneven binning over depth. If bins begin at bottom, small amounts of data may be lost at the surface of each cast, if binning begins at surface (rev = FALSE), small amounts of data may be lost at bottom of each cast

Details

Image volume calculations can change based on optical setting of VPR as well as autodeck setting used to process images For IML2018051 (S2) image volume was calculated as 108155 mm^3 by seascan (6.6 cubic inches) For COR2019002 S2 image volume was calculated as 83663 mm^3 and S3 image volume was calculated as 366082 mm^3. Used internally ( bin_cast ) after ctd_cast on a single ascending or descending section of VPR cast

Note

binSize should be carefully considered for best results

Depth is used for calculations! Please ensure depth is included in data frame using swDepth

Author(s)

E. Chisholm, K. Sorochan

vprr documentation built on July 12, 2022, 5:07 p.m.