dekadalAverage
converts daily data to dekadal by averagingdailyvar minfrac dekadalAverage
| Arguments | ||
|---|---|---|
| label | type | description |
| dailyvar | dataset or variable | daily data to be averaged, with units of units |
| minfrac | number | Minimum fraction of data that must be present (i.e., fraction not indicated as missing) within each dekad in order for each average to be calculated. If minfrac is not present, then a missing value is returned. If minfrac is not given, then the average is calculated regardless of the amount of data present. (optional) |
| Returns | ||
| dekadalvar | dataset or variable | data averaged by dekad |
Description
A dekad is a unit of time with a
peculiar definition. There are three dekads in a calendar month. The
first ten days of a month constitute the first dekad of the month. The
second ten days constitute the second dekad of the month, and the
remaining days (8 to 11 days, depending upon the month) constitute the
third dekad.
dekadalAverage calculates dekadal average
values from an input variable containing daily data.
Example
SOURCES
.NOAA .NCEP .CPC .FEWS .SAsia .RFEv2 .DAILY .est_prcp
T (1 Jan 2007)
(30 Apr 2007) RANGE
dekadalAverage
This example selects
daily precipitation estimates from the CPC/FEWS South Asia RFE product
for the period 1 January to 30 April 2007 and calculates the dekadal
averages of the daily values such that there are average precipitation
values for 1-10 January, 11-20 January, 21-31 January, 1-10 February
2007, etc. The underlying time grid remains a daily grid, but the
average values are assigned to the dekadal intervals.
Live
Example Link