[R] How to calculate min of a dataset that contains empty column

[Chris Li]

Hi all,

I have got a dataset like the following:

a  b  c
1      5
2
3      7

I am taking the minimum of each column and use it as the minimum of the
y-axis of my graphs. My scripts (simplified version) are like the following:

f<-array
f[1]=a
f[2]=b
f[3]=c
for i in 1:3
name=f[i]
ymin<-min(dataset$f[i])
plot(x,y,ylim=c(ymin,100))

The script stops at b, because the min function returns inf value. What can
I do to overcome it?

Many thanks,
Chris
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