Please help me debugg

Thu, Nov 4, 2021 11:59 PM #

I am trying to run the following double loop which  I have written but it
is not running.
Unable to get my head around the mistake. Please try to spot the bug and
help

+ for(j in 1:68){
+ if(V(FriendGraph)$name[i]==names[j]){
+ gender_vector[i]<-sex[j]
+ break;}
+ else{gender_vector[i]<-NA}
+ } }

*Error in `[.data.frame`(sex, j) : undefined columns selectedCalled from:
`[.data.frame`(sex, j)*
Browse[1]>

Warm Regards,
*Shrinivas Dharmadhikari*

Metric Consultancy Ltd.
91, Florida Estate,
Keshavanagar, Mundhwa
Pune-411036.

M: +91 98 230 09850
E : dharma at metricuk.com
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*P* Please consider the environment and do not print this email unless
absolutely necessary.

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Ivan Krylov

Fri, Nov 5, 2021 1:24 AM #

On Fri, 5 Nov 2021 12:29:21 +0530

Shrinivas Dharma <dharma at metricuk.com> wrote:

Thanks for providing the code, but it's much easier to help you if you
provide the data, too. Use dput(head(...)) to make it easy for us to
copy-paste the data.

sex[j] extracts the `j`th column out of the `sex` data frame. Does
`sex` contain 68 columns? If you want the `j`th row, use sex[j,].

Also, it may help to use merge() and have the R language do some of the
work for you, if you organise your `names` and `sex` into a single
data.frame to merge V(FriendGraph) with.

Additionally, you might save some of the execution time if you move the
V(FriendGraph) calculation out of the loop.

P.S. Your post came across mostly fine, but please compose your mail in
plain text, not HTML. We only see the plain text version, and in many
cases, the mailers horribly mangle the post when they automatically
generate it from the HTML message.

Best regards,
Ivan