@BeginModule
@Name      = EcaRx1day
@Title     = Highest one day precipitation amount per time period
@Section   = Climate indices
@Class     = Climate index
@Arguments = ifile ofile
@Operators = eca_rx1day

@BeginDescription
Let @file{ifile} be a time series of daily precipitation amounts RR,
then the maximum of RR is written to @file{ofile}. If the optional
parameter mode is set to 'm', then maximum daily precipitation
amounts are determined for each month. 
The date information of a time step in @file{ofile} is the date of
the last contributing time step in @file{ifile}.
@EndDescription
@EndModule


@BeginOperator_eca_rx1day
@Title     = Highest one day precipitation amount per time period
@Parameter = [mode]
@EndOperator


@BeginParameter
@Item = mode
STRING   Operation mode (optional). If mode = 'm' then maximum daily precipitation amounts are determined for each month
@EndParameter


@BeginExample
To get the maximum of a time series of daily precipitation amounts use:
@BeginVerbatim
   cdo eca_rx1day rrfile ofile
@EndVerbatim
If you are interested in the maximum daily precipitation for each month,
use:
@BeginVerbatim
   cdo eca_rx1day,m rrfile ofile
@EndVerbatim
Apart from metadata information, both operations yield the same as:
@BeginVerbatim
   cdo timmax rrfile ofile
   cdo monmax rrfile ofile
@EndVerbatim
@EndExample
