[R] help on matrix column removal based on another matrix results

[Rui Barradas]

Sorry, the comma is in the wrong place, it should be

Vsim[] <- Vsim[ , NSErr > 0.6]

Rui Barradas
Em 19-11-2012 16:18, Rui Barradas escreveu:
> Hello,
>
> Try
>
> Vsim[] <- Vsim[NSErr > 0.6, ]
>
>
> Hope this helps,
>
> Rui Barradas
> Em 19-11-2012 14:30, iembry escreveu:
>> Hi everyone, now I am trying to finish writing the code (I had asked for
>> assistance on subtracting arrays)
>>
>> This is what I what I am running in R:
>>> source("/home/ie/Documents/TTU/GA_Research/GLUE/R-Project/R_GLUE_Example/NSEr.R") 
>>>
>> NSEr <- function (obs, sim)
>> {
>> {jjh <- (as.vector(obs) - sim)^2
>> Xjjhs <- apply(Xjjh, 2, sum)
>> Yii <- (obs - mean(obs))^2
>> Yiis <- apply(Yii, 2, sum)
>> NSEr <- 1 - (Xjjhs/Yiis)
>> }
>> NSEr}
>>
>>> Vsim <- read.csv("1000Samples_Vsim.csv", header = TRUE, sep =",")
>>> Vsim <- as.matrix(Vsim[,-1]) # remove column 1 from analysis
>>> Vobs <- read.csv("Observed_Flow.csv", header = TRUE, sep =",")
>>> Vobs <- as.matrix(Vobs[,-1]) # remove column 1 from analysis
>>> NSEr <- NSEr(Vobs,Vsim);
>>> write.table(NSEr, "NSEr.csv", sep =",")
>>> NSErr <- t(matrix(NSEr))
>>> ## select the behavioural simulations and discard the rest
>>> Vsim <- Vsim[NSErr > 0.6]
>>> write.table(Vsim, "Vsim.csv", sep =",")
>> **Vsim becomes numeric[42016] rather than a double matrix of 101x416.
>>
>> What is the proper way to remove the columns in Vsim where the NSEr 
>> for that
>> column is less than 0.6? I am trying to make Vsim a double matrix of
>> 101x416.
>>
>> Thank-you again.
>>
>>
>>
>> Below is the rest of the code in R:
>>> ## normalise Qsim and compute the quantiles
>>> NSEr <- NSEr[NSEr > 0.6]
>>> write.table(NSEr, "NSEr_great_0.6.csv", sep =",")
>>> NSEr <- NSEr - 0.6
>>> write.table(NSEr, "NSEr_minus0.6.csv", sep =",")
>>> NSEr <- NSEr/sum(NSEr)
>>> write.table(NSEr, "NSEr_normalized.csv", sep =",")
>>> #NSEr = sum(NSEr)
>>> limits <- apply(Vsim, 1, "wtd.quantile", weights = NSEr, probs =
>>> c(0.05,0.95), normwt=F)
>>
>>
>> -- 
>> View this message in context: 
>> http://r.789695.n4.nabble.com/help-on-matrix-column-removal-based-on-another-matrix-results-tp4650043.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide 
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.