[R] if else statement

Jeff Newmiller
Mon, 04 May 2020 17:45:05 -0000

To expand on Patrick's response...

You can use the expand.grid function to generate a test table containing all
combinations. However, we would not be in a position to verify that the results
you get when you apply your logic to the test table are what you want... you
know the requirements much better than we do. Nor is that kind of service what
this mailing list is for, so please focus on showing what you cannot figure out
how to accomplish rather than asking us to do or check your work for you.

On May 4, 2020 10:33:12 AM PDT, "Patrick (Malone Quantitative)"
<malone at malonequantitative.com> wrote:
>"I tried this but I am not sure if this is correct:"
>
>Does it provide the expected result for all possible combinations of
>1/2/NA
>for both variables?
>
>On Mon, May 4, 2020 at 1:16 PM Ana Marija <sokovic.anamarija at
gmail.com>
>wrote:
>
>> Hello,
>>
>> I have a data frame like this:
>>
>> > head(b)
>>        FID   IID FLASER PLASER
>> 1: fam1000 G1000      1      1
>> 2: fam1001 G1001      1      1
>> 3: fam1003 G1003      1      2
>> 4: fam1005 G1005      1      1
>> 5: fam1009 G1009      NA      2
>> 6: fam1052 G1052      1      1
>> ...
>> > unique(b$PLASER)
>> [1]  1  2 NA
>> > unique(b$FLASER)
>> [1]  1  2 NA
>>
>> how can I do if else statement so that I am creating a
>> PHENO =2 if b$FLASER=2 or b$PLASER=2
>> PHENO=1 if b$FLASER=1 and b$PLASER=1
>> otherwise PHENO=NA
>>
>> I tried this but I am not sure if this is correct:
>> b$pheno=ifelse(b$PLASER==1 & b$FLASER==1,1,ifelse(b$PLASER==2 |
>> b$FLASER==2,2,NA))
>>
>> Thanks
>> Ana
>>
>>         [[alternative HTML version deleted]]
>>
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--
Sent from my phone. Please excuse my brevity.