dd2m: Compute monthly data from daily series
In climatol: Climate Tools (Series Homogenization and Derived Products)

Description Usage Arguments Details Value See Also Examples

Daily series are aggregated into total, mean, maximum, or minimum monthly values, and saved to files for further processing.

1 2	dd2m(varcli, anyi, anyf, anyip=anyi, anyfp=anyf, ndec=1, suf=NA, valm=2, namax=10, na.strings="NA", homog=FALSE, ini=NA)

`varcli`	Acronym of the name of the studied climatic variable, as in the data file name.
`anyi`	Initial year of the data present in the file.
`anyf`	Final year of the data present in the file.
`anyip`	First year of the output period. (Defaults to `anyi`).
`anyfp`	Last year of the output period. (Defaults to `anyf`).
`ndec`	Number of decimal places to be saved in the output file.
`suf`	Optional suffix to be added (by a hyphen) to the acronym of the variable to form the name of the input data.
`valm`	Monthly value to compute: 1: Sum, 2: Mean, 3: Maximum, 4: Minimum.
`namax`	Maximum number of missing data in any month to compute its monthly value. (10 by default)
`na.strings`	Missing data code in the original daily data.
`homog`	If `TRUE`, monthly aggregation will be performed on daily series adjusted from a previous monthly homogenization.
`ini`	Initial date of the daily data, with format `"YYYY-MM-DD"`. Its default `NA` value assume it to be the first day of the period of study.

This function can be applied to either raw or homogenized daily data.

Raw data are read from files ‘VAR_YEAR-YEAR.dat’ and ‘VAR_YEAR-YEAR.est’, and monthly data will be saved to files ‘VAR-m_YEAR-YEAR.dat’ and ‘VAR-m_YEAR-YEAR.est’.

Homogenized data are read from ‘VAR_YEAR-YEAR.rda’. In this case monthly data will be saved to files named ‘VAR-mh_YEAR-YEAR.dat’ and ‘VAR-mh_YEAR-YEAR.est’.

This function does not return any value.

homogen, dahstat, dahgrid

#Set a temporal working directory and write input files:
wd <- tempdir()
wd0 <- setwd(wd)
data(Ttest)
write(dat,'Ttest_1981-2000.dat')
write.table(est.c,'Ttest_1981-2000.est',row.names=FALSE,col.names=FALSE)
rm(dat,est.c) #remove loaded data from memory space
#Now run the example:
dd2m('Ttest',1981,2000)
#Return to user's working directory:
setwd(wd0)
#Input and output files can be found in directory:
print(wd)

Loading required package: maps
Loading required package: mapdata
Read 87660 items
  1  2  3  4  5  6  7  8  9  10  11  12

Monthly mean values saved to file Ttest-m_1981-2000.dat 
  (Months with more than 10 missing original daily data
  have also been set to missing)
[1] "/work/tmp/tmp/Rtmp2ayPsa"