[R] NAs are removed

Fri Jan 14 23:23:52 CET 2022

I don’t see any. To support this claim I tried it (but no dataframe):
CA = c(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2)
prot <- ifelse(CA == '2', 0, 1)
print(prot)

R responds:
[1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
[37] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[73] 0 0 0 0 0 0

You can check other statements in the same way. That said, in a huge dataset you might want to ask if the data provided match what you are assuming is there. If you type unique(ts$CA) do you get anything other than 1 and 2? This is a common task of figuring out if the problem is with the code or the data.

Tim
From: Neha gupta <neha.bologna90 using gmail.com>
Sent: Friday, January 14, 2022 5:11 PM
To: Ebert,Timothy Aaron <tebert using ufl.edu>
Cc: Jim Lemon <drjimlemon using gmail.com>; r-help mailing list <r-help using r-project.org>
Subject: Re: [R] NAs are removed

[External Email]
I have a variable in dataset "CA", which has the following values:

[1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
 [40] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

then I used this statement

prot <- ifelse(ts$CA == '2', 0, 1)

Is the problem exist here?

On Fri, Jan 14, 2022 at 11:02 PM Ebert,Timothy Aaron <tebert using ufl.edu<mailto:tebert using ufl.edu>> wrote:
Hi Neha,
   You used a variable named "fraction" so we took a guess. However, as another pointed out 1/0 does not give NA in R. number/0 returns Inf except 0/0 which returns NaN. So 1/0 <= 1 returns FALSE and 0/0 <= 1 returns NA. A great deal of the behavior of your program hinges on what "fraction" is in your program.

Tim

-----Original Message-----
From: R-help <r-help-bounces using r-project.org<mailto:r-help-bounces using r-project.org>> On Behalf Of Neha gupta
Sent: Friday, January 14, 2022 4:50 PM
To: Jim Lemon <drjimlemon using gmail.com<mailto:drjimlemon using gmail.com>>
Cc: r-help mailing list <r-help using r-project.org<mailto:r-help using r-project.org>>
Subject: Re: [R] NAs are removed

[External Email]

Hi Jim and Ebert

How I am using divide by zero, I did not understand? I am using caret and AUC metric.

If I do, what is the solution?

On Fri, Jan 14, 2022 at 9:41 PM Jim Lemon <drjimlemon using gmail.com<mailto:drjimlemon using gmail.com>> wrote:

> Hi Neha,
> You're using the argument "na.omit" in what function? My blind guess
> is that there's a divide by zero shooting you from behind.
>
> Jim
>
> On Sat, Jan 15, 2022 at 6:32 AM Neha gupta <neha.bologna90 using gmail.com<mailto:neha.bologna90 using gmail.com>>
> wrote:
> >
> > Hi everyone
> >
> > I use na.omit to remove NAs but still it gives me error
> >
> > Error in if (fraction <= 1) { : missing value where TRUE/FALSE
> > needed
> >
> > My data is:
> >
> > data.frame': 340 obs. of  15 variables:
> >  $ DepthTree    : num  1 1 1 1 1 1 1 1 1 1 ...
> >  $ NumSubclass  : num  0 0 0 0 0 0 0 0 0 0 ...
> >  $ McCabe       : num  1 1 1 1 1 1 3 3 3 3 ...
> >  $ LOC          : num  3 4 3 3 4 4 10 10 10 10 ...
> >  $ DepthNested  : num  1 1 1 1 1 1 2 2 2 2 ...
> >  $ CA           : num  1 1 1 1 1 1 1 1 1 1 ...
> >  $ CE           : num  2 2 2 2 2 2 2 2 2 2 ...
> >  $ Instability  : num  0.667 0.667 0.667 0.667 0.667 0.667 0.667
> > 0.667
> > 0.667 0.667 ...
> >  $ numCovered   : num  0 0 0 0 0 0 0 0 0 0 ...
> >  $ operator     : Factor w/ 16 levels "T0","T1","T2",..: 2 2 4 13 13 13
> 1 3
> > 4 7 ...
> >  $ methodReturn : Factor w/ 22 levels "I","V","Z","method",..: 2 2 2
> > 2 2
> 2
> > 2 2 2 2 ...
> >
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> >
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