netCDF: High-performance, low-level access to NetCDF data files
Description
Functions for low-level access to numerical data in NetCDF files.
They have been optimized for maximum speed and memory efficiency.
Usage
netCDFStrError(ncerr)
netCDFIsFile(filename)
netCDFOpen(filename)
netCDFClose(ncid)
netCDFVarID(ncid, var)
netCDFVarLen(ncid, var)
netCDFVarDouble(ncid, var)
netCDFVarInt(ncid, var)
netCDFMSPoints(ncid, scanIndex)
netCDFRawData(ncid)
Arguments
filename
path to NetCDF file
var
NetCDF variable ID or variable name
scanIndex
double vector with scan_index from CDF file
Value
netCDFStrError returns the textual description of an error code.netCDFIsFile returns TRUE if the referenced file
is a NetCDF file and FALSE otherwise.netCDFOpen returns the ncid of the opened file.netCDFClose returns the closing status.netCDFVarID returns the variable ID.netCDFVarLen returns the variable length.netCDFVarDouble and netCDFVarInt return either
double or integer numeric vectors.netCDFMSPoints returns a list with elements massValues
and intensityValues, with the masses for each scan in
ascending order.netCDFRawData returns a named list with components rt,
tic, scanindex, mz, and intensity.An error in any of the functions will return an integer error
code with attribute errortext containing the error description
Details
The mechanisms and structure of NetCDF files are not discussed
here, please se the NetCDF documentation for more information.