diff caret_future/tool3/Preold_advance.R @ 0:68300206e90d draft default tip

Uploaded

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/caret_future/tool3/Preold_advance.R	Thu Nov 05 02:41:30 2015 -0500
@@ -0,0 +1,95 @@
+##########
+args <- commandArgs(T)
+arg1 <- args[1]
+arg2 <- args[2]
+arg3 <- args[3]
+#source("~/galaxy-dist/tools/mpdstoolsV2/tool3/Preold.R")
+#pre(arg1,arg2,arg3)
+set.seed(1)
+pre <- function(args1,args2,args3){
+#args <- commandArgs(TRUE)
+nTrain <- read.csv(args1,row.names= 1, header = T) # example nTrain.csv file of unknown activity
+#save(nTrain,file = "nTrain.RData")
+#load("nTrain.RData")
+load(args2) # model generated from  previous programn  
+newdata <- nTrain
+modelFit <- Fit
+###########
+# input csv file must contaion the exact same column as used in model building #
+# Also do pre-proccessing by means of centering and scaling 
+## problem in s4 object so first check that the given model has s4 object in
+## >isS4(Fit$finalmodel) if it is s4 than add in with elseif loop 
+## eg . isS4(plsFit$finalModel) == TRUE
+f=function(x){
+   x<-as.numeric(as.character(x)) #first convert each column into numeric if it is from factor
+   x[is.na(x)] =median(x, na.rm=TRUE) #convert the item with NA to median value from the column
+   x #display the column
+}
+
+f2=function(x){
+               all(is.na(x))
+                }
+
+
+fop <- apply(newdata,2,f2)
+allcolumnmissing <- which(fop)
+if (length(allcolumnmissing) > 0){
+newdata[,allcolumnmissing] <- 0
+newdata[,allcolumnmissing] <- newdata[,allcolumnmissing] + runif(3,0,0.00000000000000000000000000000001) ### add noise}
+}
+
+library(caret)
+
+#if(as.character(!isS4(Fit$finalModel == "TRUE")))
+if((Fit$method != "svmRadial") && (Fit$method != "svmLinear"))
+{
+        reqcol <- Fit$finalModel$xNames
+        newdata <- newdata[,reqcol]
+        newdata <- apply(newdata,2,f)
+        newdata <- newdata + runif(3,0,0.01) ### add noise to overcome from NZV error
+        newdata1 <- preProcess(newdata, method = c("center", "scale"))
+        newdata11 <- predict(newdata1,newdata)
+###########
+        library(stats)
+        testpredict <- predict(modelFit,newdata11)
+        Label <- levels(testpredict)
+        a1 <- Label[1]
+        a2 <- Label[2]
+        probpredict <- predict(modelFit,newdata11,type="prob")
+        names <- as.data.frame(rownames(nTrain))
+        colnames(names) <- "COMPOUND"
+        activity <- as.data.frame(testpredict)
+        colnames(activity) <- "PREDICTED ACTIVITY"
+        colnames(probpredict) <- c(eval(a1),eval(a2))
+        Prob <- as.data.frame(probpredict)
+        dw <- format(cbind(names,Prob,activity),justify="centre")
+        write.table(dw,file=args3,row.names=FALSE,sep="\t")
+} else if((Fit$method == "svmRadial") | (Fit$method == "svmLinear")){       
+        library(stats)
+        reqcol <- colnames(Fit$trainingData)
+        reqcol <- reqcol[1:length(reqcol)-1]
+        newdata <- newdata[,reqcol]
+
+        newdata <- apply(newdata,2,f)
+        newdata <- newdata + runif(3,0,0.01) ### add little noise to overcome from NZV problem
+        newdata1 <- preProcess(newdata, method = c("center", "scale"))
+        newdata11 <- predict(newdata1,newdata)
+        testpredict <- predict(modelFit,newdata11)
+        Label <- levels(testpredict)
+        a1 <- Label[1]
+        a2 <- Label[2]
+        probpredict <- predict(modelFit,newdata11,type="prob")
+        names <- as.data.frame(rownames(nTrain))
+        colnames(names) <- "COMPOUND"
+        activity <- as.data.frame(testpredict)
+        colnames(activity) <- "PREDICTED ACTIVITY"
+        colnames(probpredict) <- c(eval(a1),eval(a2))
+        Prob <- as.data.frame(probpredict)
+        dw <- format(cbind(names,Prob,activity),justify="centre")
+        write.table(dw,file=args3,row.names=FALSE,sep="\t")
+}else {
+      dw <- "There is something wrong in data or model"
+	 write.csv(dw,file=args3,row.names=FALSE)
+}
+}
+pre(arg1,arg2,arg3)