Displaying 5 results from an estimated 5 matches for "vdate".
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2006 Feb 02
3
15-min mean values
Good day everyone,
I want to use zoo(aggregate) to calculate
15-min mean values from a wind dataset which
has 1-min values. The data I have looks like this:
vector VDATE vector WS
1 1998-10-22:02:11 12.5
2 1998-10-22:02:12 10.1
3 1998-10-22:02:13 11.2
4 1998-10-22:02:14 10.5
5 1998-10-22:02:15 11.5
.
.
.
n 2005-06-30:23:59 9.1
I want to use:
aggregate(zoo(WS),'in 1...
2012 May 19
2
Subset based on a date range
Hello,
Can someone help me on how to make a subset of my dataframe using two dates.
This is what I have tried, but no data is being excluded in the new frame.
six_months<-subset(Two_years, vdate>2011-01-01|vdate<2011-07-01)
or all data is excluded
six_months<-subset(Two_years, vdate>2011-01-01&vdate<2011-07-01)
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2006 Jan 17
2
Calculation of daily max
Good day everyone.
I have a large dataset of 1 min wind speeds
covering 5 years.
How can I make an array of maximum daily values?
The vectors I have are: 'VDATE' with dates in format
'%Y-%m-%d' (like '1992-10-28') and 'WS' with wind speed data
(same number of elements as VDATE).
I want an array with 2 columns: Max daily wind speed and
corresponding day.
Has anyone got an elegant way of doing that?
(My background is in C++ I w...
2012 Oct 30
0
ensembleBMA pit function warnings
...uot;)
MAE> obs <- paste("T2","obs", sep = ".")
MAE> ens <- paste("T2", ensMemNames, sep = ".")
MAE> tempTestData <- ensembleData( forecasts = ensBMAtest[,ens],
MAE+ dates = ensBMAtest[,"vdate"],
MAE+ observations = ensBMAtest[,obs],
MAE+ station = ensBMAtest[,"station"],
MAE+ forecastHour = 48,
MAE+ initializationTime = "00")
MAE> #...
2012 Jul 12
0
I: ensembleBMA pit function warnings
...uot;)
pit> obs <- paste("T2","obs", sep = ".")
pit> ens <- paste("T2", ensMemNames, sep = ".")
pit> tempTestData <- ensembleData( forecasts = ensBMAtest[,ens],
pit+ dates = ensBMAtest[,"vdate"],
pit+ observations = ensBMAtest[,obs],
pit+ station = ensBMAtest[,"station"],
pit+ forecastHour = 48,
pit+ initializationTime = "00")
pit> #...