[R] Convert ncdf data to dataframe

Jeff Newmiller jdnewmil at dcn.davis.ca.us
Thu Jun 2 16:12:20 CEST 2016


The answer to your question is "yes".

You probably need to make your example reproducible by including (or referencing by URL) sample data if you want a more complete response. 
-- 
Sent from my phone. Please excuse my brevity.

On June 2, 2016 1:42:55 AM PDT, Miluji Sb <milujisb at gmail.com> wrote:
>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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>
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>and provide commented, minimal, self-contained, reproducible code.

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