cmsaf.sub.rel

The function subtracts the fields of infile2 from the fields of infile1.
Infiles have to have the same spatial and temporal dimension.

The Satellite Application Facility on Climate Monitoring (CM SAF)
is a ground segment of the European Organization for the Exploitation of
Meteorological Satellites (EUMETSAT) and one of EUMETSATs Satellite Application
Facilities. The CM SAF contributes to the sustainable monitoring of the climate
system by providing essential climate variables related to the energy and water
cycle of the atmosphere (<https://www.cmsaf.eu>). It is a joint cooperation of eight
National Meteorological and Hydrological Services.
The 'cmsafops' R-package provides a collection of R-operators for the analysis and
manipulation of CM SAF NetCDF formatted data. Other CF conform NetCDF data with time,
longitude and latitude dimension should be applicable, but there is no guarantee for
an error-free application.
CM SAF climate data records are provided for free via (<https://wui.cmsaf.eu/safira>).
Detailed information and test data are provided on the CM SAF webpage
(<http://www.cmsaf.eu/R_toolbox>).

Steffen Kothe

cmsafops

Tools for CM SAF NetCDF Data

Danny Parsons

cmsaf.sub.rel function

<dl><dt>var1</dt>
<dd>Name of variable in infile1 (character).</dd>
<dt>infile1</dt>
<dd>Filename of first input NetCDF file. This may include the
directory (character).</dd>
<dt>var2</dt>
<dd>Name of variable in infile2 (character).</dd>
<dt>infile2</dt>
<dd>Filename of second input NetCDF file. This may include the
directory (character).</dd>
<dt>outfile</dt>
<dd>Filename of output NetCDF file. This may include the directory
(character).</dd>
<dt>nc34</dt>
<dd>NetCDF version of output file. If <code>nc34 = 3</code> the output file will be
in NetCDFv3 format (numeric). Default output is NetCDFv4.</dd>
<dt>overwrite</dt>
<dd>logical; should existing output file be overwritten?</dd>
<dt>verbose</dt>
<dd>logical; if TRUE, progress messages are shown</dd>
<dt>nc1</dt>
<dd>Alternatively to <code>infile1</code> you can specify the input as an
object of class <code>ncdf4</code> (as returned from <code>ncdf4::nc_open</code>).</dd>
<dt>nc2</dt>
<dd>Alternatively to <code>infile2</code> you can specify the input as an
object of class <code>ncdf4</code> (as returned from <code>ncdf4::nc_open</code>).</dd></dl>

Arguments

Subtract the fields of two input NetCDF files (relative).
Designed for the CM SAF R Toolbox. — cmsaf.sub.rel

<dl>

<dt>var1</dt>
<dd>Name of variable in infile1 (character).</dd>


<dt>infile1</dt>
<dd>Filename of first input NetCDF file. This may include the
directory (character).</dd>


<dt>var2</dt>
<dd>Name of variable in infile2 (character).</dd>


<dt>infile2</dt>
<dd>Filename of second input NetCDF file. This may include the
directory (character).</dd>


<dt>outfile</dt>
<dd>Filename of output NetCDF file. This may include the directory
(character).</dd>


<dt>nc34</dt>
<dd>NetCDF version of output file. If <code>nc34 = 3</code> the output file will be
in NetCDFv3 format (numeric). Default output is NetCDFv4.</dd>


<dt>overwrite</dt>
<dd>logical; should existing output file be overwritten?</dd>


<dt>verbose</dt>
<dd>logical; if TRUE, progress messages are shown</dd>


<dt>nc1</dt>
<dd>Alternatively to <code>infile1</code> you can specify the input as an
object of class <code>ncdf4</code> (as returned from <code>ncdf4::nc_open</code>).</dd>


<dt>nc2</dt>
<dd>Alternatively to <code>infile2</code> you can specify the input as an
object of class <code>ncdf4</code> (as returned from <code>ncdf4::nc_open</code>).</dd>

</dl>

cmsaf.sub.rel: Subtract the fields of two input NetCDF files (relative). Designed for the CM SAF R Toolbox.

Description

Usage

Value

Arguments