On 28/04/2008 9:47 PM, Debasish Roy wrote:
I tried to read a dataset and then draw a histogram with a freqeuncy density curve fitted on the top of this. I used the command
res <- read.table("C:/Documents and Settings/db/Desktop/res.dat")
and found
res[1:5]
       V1     V2     V3      V4     V5
1 -0.4806 0.5075 0.0491 -0.7985 -0.666
Then I got the following when I troied to plot it
hist(res)
Error in hist.default(res) : 'x' must be numeric

Even I tried
hist(res[,2])
which is showing a blank plot.

I'd guess it's not a blank plot, it's simply a histogram with one big bar taking up the whole of the plot. As others have mentioned, you only have one observation in each column.

By the way, using a more informative subject line would be helpful. Most of the messages in the R-help mailing list are about R help.

Duncan Murdoch

My suspision is something is wrong in the way the data was read (with V1, V2, V3 etc). Can someone please help me how to get rid of this problem ?

      
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