Dear friends,
My dataset is like the following:
x y mcpvalue
0.4603578 0.6247629 1.001
0.4603715 0.6247788 1.001
0.4603852 0.6247948 1.001
0.4110561 0.5664841 0.995
The x and y variables are unsorted.
I use the function image(x,y,mcpvalue) to generate a plot, but the error
is that "increasing 'x' and 'y' values are expected". So i use
image(x=seq(min(x),max(x)), y=seq(min(y),max(y)),z=as.matrix
(result$mcpvalue))
to do it again, but there is still an error "dimensions of z are not
length(x)(-1) times length(y)(-1)".
Anybody can show me how to use the image() correctly with the original x/y
unsorted?
Thanks very much.
--
With Kind Regards,
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Zhi Jie,Zhang ,PHD
Tel:+86-21-54237149
Dept. of Epidemiology,School of Public Health,Fudan University
Address:No. 138 Yi Xue Yuan Road,Shanghai,China
Postcode:200032
Email:[EMAIL PROTECTED]
Website: www.statABC.com
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