[R] about netcdf files

[lily li]

Thanks for your reply. But it says "Error in (function (classes, fdef,
mtable)):
unable to find an inherited method for function 'brick' for signature
'ncdf4' "

The dataset is attached. It contains daily precipitation data for 20 years,
within a rectangle, so that there are several grid points. I use the code
to open it, but don't know how to get csv files, while each file contains
continuous daily precipitation data for each grid cell.
pre1 = nc_open('sample_precip_daily.nc')
pre1
pre1_rd = ncvar_get(pre1, 'precipitation')
nc_close(pre1)

Thanks for your help.

On Tue, Jul 26, 2016 at 4:08 AM, Jon Skoien <jon.skoien at jrc.ec.europa.eu>
wrote:

> You could try with the brick function from the raster package.
>
> bvar = brick(netcdfName)
>
> This uses the ncdf4 functions for opening and reading the netcdf, but
> makes it easier to extract data for each day:
>
> p1 = rasterToPoints(bvar[[1]])
> and write p1 to csv.
>
> Best,
> Jon
>
>
>
> On 7/26/2016 6:54 AM, lily li wrote:
>
>> Hi all,
>>
>> I have a problem in opening netcdf files. If one netcdf file contains
>> longitude, latitude, and daily precipitation. How to relate each
>> precipitation record to its associated location, and export them as csv
>> files? Thanks.
>>
>> I just use nc_open(), ncvar_get(), but it is not very helpful. Thanks for
>> any ideas.
>>
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>>
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> --
> Jon Olav Skøien
> Joint Research Centre - European Commission
> Institute for Space, Security & Migration
> Disaster Risk Management Unit
>
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>
> jon.skoien at jrc.ec.europa.eu
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