Thank Rainer and Jim!! The end result was: #Makes a new data set name "MyData_Minus_MW01" that contains all the data where the Location Column is not equal to MW01 and the comma after that ensures that all columns are copied into the amended data.frame. MyData_Minus_MW01 <- MyData[ MyData$Location != "MW01", ]
The final code is as follows: #Loads ggplot2 library(ggplot2) #Loads data from internet and names it MyData MyData <- read.csv( "http://doylesdartden.com/ExampleData.csv";, header = TRUE, stringsAsFactors = FALSE ) #Makes a new data set name "MyData_Minus_MW01" that contains all the data where the Location Column is not equal to MW01 and the comma after that ensures that all columns are copied into the amended data.frame. MyData_Minus_MW01 <- MyData[ MyData$Location != "MW01", ] #Sets whic are detections and nondetects MyData_Minus_MW01$Detections <- ifelse(MyData_Minus_MW01$D_GW_Elv ==1, "Detected", "NonDetect") #Removes the NAs MyData_Minus_MW01WONA <- MyData_Minus_MW01[!is.na(MyData_Minus_MW01$Detections), ] #does the plot p <- ggplot(data = MyData_Minus_MW01WONA, aes(x=Year, y=GW_Elv , col=Detections)) + geom_point(aes(shape=Detections)) + ##sets the colors scale_colour_manual(values=c("black","red")) + #scale_y_log10() + #location of the legend theme(legend.position=c("right")) + #sets the line color, type and size geom_line(colour="black", linetype="dotted", size=0.5) + ylab("Elevation Feet Mean Sea Level") ## does the graph using the Location IDs as the different Locations. p + facet_grid(Location ~ .) Thanks again David [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
