Hi Shivi82, My suggestion is that the error concerned a mismatch between the number of labels and the number of bars.
More seriously, you seem to want to sum the values of weight (MFST_WT) within each month. So: tot_mon_wt<-by(mwlc$MFST_WT,mwlc$Month,sum) barplot(tot_mon_wt, names.arg = sort(unique(mwlc$Month)), las=2, ylim=c(0,25000),col="red",border="orange", main="Monthly Weight") Jim On Wed, May 27, 2015 at 7:28 PM, Shivi82 <shivibha...@ymail.com> wrote: > Hello All, > I need help on creating a histogram for one of my data. The data is as below > (sample): > MFST_WT Hours PROCESS Month Weekday Day of the Month > 6,828 13 INBOUND Mar Fri 13 > 2,504 16 INBOUND Mar Fri 27 > 20 16 INBOUND Mar Fri 27 > 10,262 16 INBOUND Mar Fri 27 > 2,500 17 INBOUND Mar Fri 13 > 3,938 16 INBOUND Feb Thu 26 > 798 10 INBOUND Feb Sat 14 > 5,439 15 INBOUND Feb Mon 16 > > This data has these columns and total rows are 45000. > Now I need to group the data and create a bar plot based on total weight on > a monthly basis. The code I have used is: > barplot(mwlc$MFST_WT, names.arg = mwlc$Month, las=2, ylim=c(0,10000), col > ="red", > border="orange", main="Monthly Weight") > but this is showing an error. Please suggest. > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Help-on-Histogram-Barplot-tp4707739.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. ______________________________________________ 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.
