Help on Histogram ~ Barplot
Adding back context which was omitted by this Nabble user who still does not understand the mailing list conventions:
On May 27, 2015, at 2:28 AM, Shivi82 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
D.Winsemius wrote: What I'm seeing here is the likelihood that the data object has been input incorrectly (or is a mess in the original file?) There appear to be commas in what would presumably be a numeric column and a column name with spaces in it. There is also misregistration of some lines of data possible with tab-characters that were eaten by Nabble's interface. If you want help under these circumstances you should either respond with the first 20 lines of the original data file posted through a mail-client bypassing Nabble or post dput( head(objname, 20))
On May 28, 2015, at 6:13 AM, Shivi82 wrote:
HI David, So if I understand from your post below, when we import a file in R- we need to make sure that the variable names do not have any space nor they should be in special characters or not in comma format.
Well .... perhaps. I asked to see the first several lines of the data. If it really were a csv file, then there should not have been any commas in the first column when the R data-object was printed. Any spaces in the header row should have been converted to periods. That's what the `make.names` function does when it encounters spaces or special characters.
David.
> Please correct me I am wrong.
>
> Now I have changed the file to a new file as RData.csv file and now when I
> use the below code it gives me an error
> graph<- read.csv("RData.csv", header = TRUE)
> MonthlyWeight<-by(RData$Weight,names.arg = RData$Month,sum)
>
> The error is : Error in by(RData$Weight, names.arg = RData$Month, sum) :
> object 'RData' not found. Whereas I checked using "getwd()" this file is
> saved in the working directory.
> Please suggest.
>
>
>
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David Winsemius
Alameda, CA, USA