[R] How can I delete column yhat AND STILL retain the order of Response?

[Jeff Newmiller]

Eventually you will think to read the Posting Guide, which discusses which attachments are likely to be allowed on the mailing list. Most users find that pasting a minimal amount of data into the main body of the email is the simplest way to be sure the info will get through to someone who can help. 
-- 
Sent from my phone. Please excuse my brevity.

On April 1, 2017 12:13:56 PM PDT, BR_email <br at dmstat1.com> wrote:
>Rui:
>Thanks. I will try it.
>FYI: I did attached the data, but here it is re-attached.
>
>Thanks, again.
>Bruce
>
>Bruce Ratner, Ph.D.
>The Significant Statistician™
>(516) 791-3544
>Statistical Predictive Analtyics -- www.DMSTAT1.com
>Machine-Learning Data Mining and Modeling -- www.GenIQ.net
>  
>
>Rui Barradas wrote:
>> Hello,
>>
>> 1) We don't have access to your file firstRdata.csv so what I'll say 
>> is just an untested guess. You can post some of your data with the 
>> following R command.
>>
>> dput(head(Response, 20))  # paste the output of this in a mail
>>
>> 2) First you use read.csv that outputs a data.frame and then do 
>> data.frame(Response). Useless. Response already is a df.
>>
>> 3) I believe the trouble you're facing comes from your use of 
>> attach(). This function is _never_ needed and is cause of all sorts
>of 
>> bugs. In particular, what you are ordering is the attached copy of 
>> Response, and all changes you do to it will only have effect on the 
>> copy. The original is left as it were.
>>
>> So run the same code (with the obvious bug yhatResponse$yhat 
>> corrected) but eliminating the 'attach' instruction. And see if it 
>> reorders Response.
>>
>> Hope this helps,
>>
>> Rui Barradas
>>
>>
>> Em 01-04-2017 17:32, BR_email escreveu:
>>> Response    <- read.csv("C:/R_Data/firstRdata.csv", sep=",", 
>>> header=TRUE)
>>> Response
>>> Response    <- data.frame(Response)
>>> attach(Response)
>>> Response
>>> Response    <- Response[order(-yhat),]
>>> Response    <- Response[rev(order(yhatResponse$yhat)),]
>>> Response
>>
>>
>>
>
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