Hello, I am trying to plot the hourly standard deviation of wind speeds from 13 different measured locations over many years. I imported the data using readLines and into a dataframe called finalData. Using tapply, I determined the standard deviation of the windspeed (ws) for each hour (hour) from every location (stn) using this command line: statHour = tapply(finalData$ws,list(finalData$stn,finalData$hour),sd) I want to plot the standard deviation for each hour of the day, with hours as the x-axis and the standard deviation for the y-axis, and each station as a different color. I've managed to get a boxplot of this, but ideally, I'd like a scatter plot to determine the variations between each instrument throughout the day. The boxplot command is this: boxplot(statHour, names=colnames(statHour),xlab='Hour of the Day',ylab='Standard Deviation of Wind Speed') I also tried to make a dataframe of the tapply output but it ends up using the hours as the column names instead of putting it into the dataframe. Please help!! I have R version 3.1.1 Thanks a lot, Alexandra
Hi Alexandra,
This produces a rather messy plot, but it might get you started:
finalData<-data.frame(ws=sample(0:100,1300,TRUE),
stn=rep(1:13,each=100),hour=rep(1:24,length.out=1300))
statHour = tapply(finalData$ws,list(finalData$stn,finalData$hour),sd)
# open a wide device
x11(width=13)
# leave room for an external legend
par(mar=c(5,4,4,6))
matplot(1:24,t(statHour),type="b",
main="Wind speed standard deviation by hour of day",
xlab="Hour",ylab="Wind speed standard deviation",lty=1)
legend(25.2,40,legend=paste("Stn",1:13,sep=""),pch=c(0:9,"a","b","c"),
col=1:13,xpd=TRUE)
Jim
On Tue, Mar 31, 2015 at 10:07 AM, Alexandra Catena <amc5981 at gmail.com>
wrote:
> Hello,
>
> I am trying to plot the hourly standard deviation of wind speeds from
> 13 different measured locations over many years. I imported the data
> using readLines and into a dataframe called finalData. Using tapply, I
> determined the standard deviation of the windspeed (ws) for each hour
> (hour) from every location (stn) using this command line:
>
> statHour = tapply(finalData$ws,list(finalData$stn,finalData$hour),sd)
>
> I want to plot the standard deviation for each hour of the day, with
> hours as the x-axis and the standard deviation for the y-axis, and
> each station as a different color. I've managed to get a boxplot of
> this, but ideally, I'd like a scatter plot to determine the variations
> between each instrument throughout the day. The boxplot command is
> this:
>
> boxplot(statHour, names=colnames(statHour),xlab='Hour of the
> Day',ylab='Standard Deviation of Wind Speed')
>
> I also tried to make a dataframe of the tapply output but it ends up
> using the hours as the column names instead of putting it into the
> dataframe. Please help!!
>
> I have R version 3.1.1
>
> Thanks a lot,
> Alexandra
>
> ______________________________________________
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> and provide commented, minimal, self-contained, reproducible code.
>
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Reproducibility https://github.com/hadley/devtools/wiki/Reproducibility http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example John Kane Kingston ON Canada> -----Original Message----- > From: amc5981 at gmail.com > Sent: Mon, 30 Mar 2015 16:07:05 -0700 > To: r-help at r-project.org > Subject: [R] Plotting using tapply function output > > Hello, > > I am trying to plot the hourly standard deviation of wind speeds from > 13 different measured locations over many years. I imported the data > using readLines and into a dataframe called finalData. Using tapply, I > determined the standard deviation of the windspeed (ws) for each hour > (hour) from every location (stn) using this command line: > > statHour = tapply(finalData$ws,list(finalData$stn,finalData$hour),sd) > > I want to plot the standard deviation for each hour of the day, with > hours as the x-axis and the standard deviation for the y-axis, and > each station as a different color. I've managed to get a boxplot of > this, but ideally, I'd like a scatter plot to determine the variations > between each instrument throughout the day. The boxplot command is > this: > > boxplot(statHour, names=colnames(statHour),xlab='Hour of the > Day',ylab='Standard Deviation of Wind Speed') > > I also tried to make a dataframe of the tapply output but it ends up > using the hours as the column names instead of putting it into the > dataframe. Please help!! > > I have R version 3.1.1 > > Thanks a lot, > Alexandra > > ______________________________________________ > R-help at 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.____________________________________________________________ FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more!