R help - Nov 2014 - R 3.1.2 (x64) Programming Assignment 1: Air Pollution(corr) do not understand the task

Dear R experts,

I've submited  correctly "pollutionmean" and "complete"
tasks, but "corr"
returns error, despite the beginning of the result is the same as example
output. (screenshot attached)

May be I understood the task wrongly; file of my function is attached, and
it does following:
1) sets directory
2) puts all files from the directory into one dataframe
3) removes NA values
4) creates zero vector "cr"
5) does the cycle:
         for each monitor location (id) counts number of cases "nmb"
         If "nmb" is more than threshold, calculates cor()
         puts cor() result into numeric vector "cr"
6) prints result as numeric vector

I have tried to change cor() function to the complex one with "method"
etc,
tried to change "complete.cases" conditions, cycle structure, but it
doesn't help.
I think the reason is I understand task wrongly....
Please, tell me where Im wrong.

Thank you,
Eva

Best Regards,
Evgeniia-Liza Sheliukhina

This is not the help forum for Coursera classes.

-- 
David.


On Nov 18, 2014, at 1:33 PM, ???????-???? ???????? wrote:
> Dear R experts,
> 
> I've submited  correctly "pollutionmean" and
"complete" tasks, but "corr"
> returns error, despite the beginning of the result is the same as example
> output. (screenshot attached)
> 
> May be I understood the task wrongly; file of my function is attached, and
> it does following:
> 1) sets directory
> 2) puts all files from the directory into one dataframe
> 3) removes NA values
> 4) creates zero vector "cr"
> 5) does the cycle:
>         for each monitor location (id) counts number of cases
"nmb"
>         If "nmb" is more than threshold, calculates cor()
>         puts cor() result into numeric vector "cr"
> 6) prints result as numeric vector
> 
> I have tried to change cor() function to the complex one with
"method" etc,
> tried to change "complete.cases" conditions, cycle structure, but
it
> doesn't help.
> I think the reason is I understand task wrongly....
> Please, tell me where Im wrong.
> 
> Thank you,
> Eva
> 
> Best Regards,
> Evgeniia-Liza Sheliukhina
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA

Eva and Professor Peng,

I spent many hours on Programming Assignment 1, however I was unable to get it
right. I found it most useful and think others should work at it too!

Please do send me your work now that the deadline is over. Or you could tell me
your Github account so that I could fork it? I will send you my work if you
want!

Thanking you in advance,
Dr. Aditya P. Singh
8133/5 Stadium Road,
Patiala 147001 India.



On Wednesday, November 19, 2014 4:52 AM, ???????-???? ???????? <evlizashel at
gmail.com> wrote:
Dear R experts,

I've submited  correctly "pollutionmean" and "complete"
tasks, but "corr"
returns error, despite the beginning of the result is the same as example
output. (screenshot attached)

May be I understood the task wrongly; file of my function is attached, and
it does following:
1) sets directory
2) puts all files from the directory into one dataframe
3) removes NA values
4) creates zero vector "cr"
5) does the cycle:
         for each monitor location (id) counts number of cases "nmb"
         If "nmb" is more than threshold, calculates cor()
         puts cor() result into numeric vector "cr"
6) prints result as numeric vector

I have tried to change cor() function to the complex one with "method"
etc,
tried to change "complete.cases" conditions, cycle structure, but it
doesn't help.
I think the reason is I understand task wrongly....
Please, tell me where Im wrong.

Thank you,
Eva

Best Regards,
Evgeniia-Liza Sheliukhina

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.