[R] rcode problem

[arun]

HI,

nuru<- read.table("NS.diet.txt",header=TRUE,stringsAsFactors=FALSE,sep="\t",fill=TRUE,check.names=FALSE)

colnames(nuru)
# [1] "Species"               "Fish ID"               "Date"                 
 #[4] "Time"                  "Depth (m)"             "Haul.No."             
 #[7] "Longitude"             "Latitude"              "Stat.Rect"            
#[10] "hake.length"           "Tot.Weight (g)"        "Maturity"             
#[13] "Sex"                   "Stomach contents(1/0)" "Gutted.Weight (g)"    


plot(diet~class.f, data=nuru) ## `diet` and `class.f` columns are not found in the dataset.
A.K.


----- Original Message -----
From: "Garkuwa, Nuru Adamu" <nuru.garkuwa.11 at aberdeen.ac.uk>
To: "r-help at r-project.org" <r-help at r-project.org>
Cc: 
Sent: Tuesday, August 20, 2013 1:52 PM
Subject: [R] rcode problem

Hi,



Please find attached rcode and my data.There seems to be a problem in the following rcodes:

plot(diet~class.f, data=nuru)
points(pred.mod1~midpoints,type="b")



please I need your help.



Kind Regards,

Nuru


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