[R] Convert ncdf data to dataframe

[Miluji Sb]

Dear all,

I have used the following code to read in a ncdf file

library(chron)
library(lattice)
library(ncdf4)
library(data.table)

ncname <- ("/file_path")
ncfname <- paste(ncname, ".nc", sep = "")
dname <- "ssl"  # note: tmp means temperature (not temporary)

ncin <- nc_open(ncfname)
print(ncin)

The attributes of the file are:

     4 variables (excluding dimension variables):
        double longitude[row]
            long_name: longitude
            units: degrees_east
            standard_name: longitude
        double latitude[row]
            long_name: latitude
            units: degrees_north
            standard_name: latitude
        double ssl[col,row]
            long_name: storm surge level
            units: m
            _FillValue: -99999
            scale_factor: 1
            add_offset: 1
        float RP[col]
            long_name: return period
            units: yr
            Contents: The RPs have been estimated following the Peak Over
Threshold Method (see reference below)
            Starting date: 01-Dec-2009
            End date: 30-Nov-2099 21:00:00
     2 dimensions:
        col  Size:8
        row  Size:2242

I would like to convert the data into a dataframe by longitude and
latitude. Is that possible? Thank you!

Sincerely,

Milu

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