read_L3_file: Read Level-3 ocean colour.

In mdsumner/roc: Tools for Ocean Colour

Description

Read the compound types (i.e. tables of variables) from ocean colour L3 NetCDF files.

Usage

read_binlist(file)

read_compound(file, compound_vars = NULL, select_stat = c("sum",
  "sum_squared"))

Arguments

file	file path
compound_vars	the variables to read
select_stat	defaults to "sum" and "sum_squared"

Details

‘read_binlist' for just the ’BinList' 'read_compound' for just the compound data (not implemented) read_L3_file for everything at once

Compound vars we would usually want for MODISA are "BinList" and 'c("Rrs_443", "Rrs_488", "Rrs_555", "Rrs_547")' since these are used for calculating chlorophyll-a. This function is not very general yet, you'll always get the BinList. This function is specific to files in this form, for any of the platforms (MODISA here): https://oceandata.sci.gsfc.nasa.gov/MODIS-Aqua/L3BIN

Value

data frame of bin numbers, number of observations and scenes, weights and time record, a data frame of the compound variables and bin details

Examples

f <- system.file("extdata", "ocfiles", "S2008001.L3b_DAY_CHL.nc", package = "croc")
bins <- read_binlist(f)
bin2lonlat(bins$bin_num, 2160)
bin2bounds(bins$bin_num, 2160)


read_L3_file(system.file("extdata/ocfiles/S2008001.L3b_DAY_RRS.nc", package = "croc"))

mdsumner/roc documentation built on May 22, 2019, 5:05 p.m.