read_chla_daily: Read daily chlorphyll-a

In AustralianAntarcticDivision/raadtools: Tools for Synoptic Environmental Spatial Data

Read daily chlorphyll-a

Description

Data is read as daily files in a way consistent with other read functions that can be used by extract(). (readchla for example cannot be used this way as it returns a mean value for the period asked for).

Usage

read_chla_daily(
  date,
  time.resolution = "daily",
  xylim = NULL,
  lon180 = TRUE,
  varname = c("chlor_a"),
  setNA = TRUE,
  latest = TRUE,
  returnfiles = FALSE,
  ...,
  inputfiles = NULL
)

read_chla_weekly(
  date,
  xylim = NULL,
  lon180 = TRUE,
  varname = c("chlor_a"),
  setNA = TRUE,
  latest = TRUE,
  returnfiles = FALSE,
  ...,
  inputfiles = NULL
)

read_chla_monthly(
  date,
  xylim = NULL,
  lon180 = TRUE,
  varname = c("chlor_a"),
  setNA = TRUE,
  latest = TRUE,
  returnfiles = FALSE,
  ...,
  inputfiles = NULL
)

Arguments

date	date or dates of data to read,
time.resolution	time resoution data to read, daily or monthly
xylim	spatial extents to crop from source data, can be anything accepted by extent, see Details
lon180	defaults to TRUE, to "rotate" Pacific view 0, 360 data to Atlantic view -180, 180
varname	variable to return from the data files, default is "sst" or "anom", "err", "ice"
setNA	mask out land values (only applies to monthly time.resolution)
latest	if TRUE (and date not supplied) return the latest time available
returnfiles	ignore options and just return the file names and dates
...	passed in to brick, primarily for filename
inputfiles	input the files data base to speed up initialization

Details

This function will read from the entire era available to SeaWiFS, MODISA, and VIIRS.

To read from particular eras use the output of ocfiles() for inputfiles argument.

Value

raster object

Examples

read_chla_daily(latest = FALSE) ## we should see SeaWiFS
read_chla_daily() ## we should see MODISA (or VIIRS)

AustralianAntarcticDivision/raadtools documentation built on Nov. 14, 2024, 4:27 p.m.