Say I have a dataset that looks like Location Year GW_Elv MW01 1999 546.63 MW02 1999 474.21 MW03 1999 471.94 MW04 1999 466.80 MW01 2000 545.90 MW02 2000 546.10
The whole dataset is at http://doylesdartden.com/ExampleData.csv and I use the code below to do the graph but I want to do it without MW01. How can I remove MW01?? I'm sure I can do it by SubSeting but I can not figure out how to do it. Thank you David -------------------------------------------------------------- library(ggplot2) MyData <- read.csv("http://doylesdartden.com/ExampleData.csv", header=TRUE, sep=",") #Sets whic are detections and nondetects MyData$Detections <- ifelse(MyData$D_GW_Elv ==1, "Detected", "NonDetect") #Removes the NAs MyDataWONA <- MyData[!is.na(MyData$Detections), ] #does the plot p <- ggplot(data = MyDataWONA, 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 ~ .) [[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.