Dear All,
I am having some problem in apply function.
I have some data like below. I want to get a range vector (which is max-min
value for each row , ignoring NA values.)
> Species.all[1:10,]
V2 V3 V4 V5 V6 V7 V8 V9
1 57543 55938 47175 54922 36032 5785 29497 7286
2 42364 40472 29887 40107 19723 2691 14445 3258
3 19461 19646 18538 22392 6744 794 4919 1024
4 45 41 28 34 33 NA 26 NA
5 45 41 28 34 33 NA 26 NA
6 45 41 28 34 33 NA 26 NA
7 14 9 14 14 7 NA 10 NA
8 20 25 10 15 21 NA 10 NA
9 20 25 10 15 21 NA 10 NA
10 578 566 478 753 361 150 262 170
> dim(Species.all)
[1] 1862 8
I used apply function like below. I used this same function for some other
data, there it worked. But here its not working (giving error message).
> Range.j=apply(Species.all,1,max,na.rm =
TRUE)-apply(Species.all,1,min,na.rm = TRUE)
Error in apply(Species.all, 1, max, na.rm = TRUE) - apply(Species.all, :
non-numeric argument to binary operator
When i tried to check, you can see from the steps it is giving totally wrong
results.
> apply(Species.all[1:10,],1,max)
1 2 3 4 5 6 7 8 9 10
"7286" "3258" "1024" NA NA NA NA NA NA " 753"
> apply(Species.all[1:10,],1,min)
1 2 3 4 5 6 7
8 9 10
" 47175" " 29887" " 18538" NA NA NA NA
NA NA " 262"
Main problem is, this code is working for some cases, but not for all. Does
any body have an idea, why it is so? Or can anyone show me some other way to
do the same.
Thanks in advance,
With best regard,
Suparna
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