oce (version 0.1.67)

read.lobo: Read a lobo data file

Description

Read a data file created by a LOBO instrument.

Usage

read.lobo(file, cols=7)

Arguments

file

A connection or a character string giving the name of the file to load.

cols

Number of columns in dataset.

Value

• A lobo object containing:
• header
  The files' header.
• processing.log
  The processing log.
• time
  Times of observations in the time series.
• u
  Time series of u component of velocity.
• v
  Time series of v component of velocity.
• nitrate
  Time series of nitrate concentration.
• fluorescence
  Time series of fluorescence.
• S
  Time series of salinity.
• T
  Time series of temperature.
• p
  Time series of pressure.
• data
  The files's data, as a simple list.

source

The file was created with the lines given in the example.

Details

This version of read.lobo is really quite crude, having been developed mainly for a ``predict the Spring bloom'' contest at Dalhousie University. In particular, the function assumes that the data columns are exactly as specified in the Examples section; if you reorder the columns or add new ones, this function is unlikely to work correctly. Furthermore, it should be noted that the file format was inferred simply by downloading files; the supplier makes no claims that the format will be fixed in time.

It is also worth noting that there is no read.oce equivalent to read.lobo, because the file format has no recognizable header.

References

http://www.satlantic.com/default.asp?mn=1.15.27.139 http://www.mbari.org/lobo/

See Also

A lobo object may be summarized with summary.lobo and plotted with plot.lobo.

Examples

library(oce)
uri <- paste("http://loboviz.satlantic.com/cgi-bin/nph-data.cgi?",
	"min_date=20070220&max_date=20070305",
 	"&x=date&",
 	"y=current_across1,current_along1,nitrate,fluorescence,salinity,temperature&",
 	"data_format=text",sep="")
lobo <- read.lobo(uri)
summary(lobo)