[R] [FORGED] Generating random data with non-linear correlation between two variables

[Muhammad Bilal]

By non linear correlation I mean that the trend or relationship between two variables is not a straight line. It is slightly curved like the one shared in the first replies.



--
Muhammad Bilal


Research Assistant and Doctoral Researcher,
Bristol Enterprise, Research, and Innovation Centre (BERIC),
University of the West of England (UWE),
Frenchay Campus,
Bristol,
BS16 1QY 


muhammad2.bilal at live.uwe.ac.uk

    
________________________________________
From: David R Forrest <drf at vims.edu>
Sent: 09 April 2016 11:48
To: Muhammad Bilal
Cc: Rolf Turner; r-help at r-project.org
Subject: Re: [R] [FORGED] Generating random data with non-linear correlation between two variables

Please specify your goal in the oracle/psql analytical functions you know or specify what you mean by nonlinear correlation

Sent from my iPhone

> On Apr 9, 2016, at 6:09 AM, Muhammad Bilal <Muhammad2.Bilal at live.uwe.ac.uk> wrote:
>
> No its not. I am doing all these experiments for my own learning purpose. I am Oracle SQL & PLSQL programmer and  I can do these things with Oracle analytical functions.
>
> However at present I am keen to learn R, with no other interest right now.
>
> Thanks
> --
> Muhammad Bilal
> Research Assistant and PhD Student,
> Bristol Enterprise, Research and Innovation Centre (BERIC),
> University of the West of England (UWE),
> Frenchay Campus,
> Bristol,
> BS16 1QY
>
> muhammad2.bilal at live.uwe.ac.uk
>
>
> ________________________________________
> From: Rolf Turner <r.turner at auckland.ac.nz>
> Sent: 09 April 2016 04:46
> To: Muhammad Bilal
> Cc: r-help at r-project.org
> Subject: Re: [FORGED] [R] Generating random data with non-linear correlation between two variables
>
>> On 09/04/16 06:57, Muhammad Bilal wrote:
>> Hi All,
>>
>> I am new to R and don't know how to achieve it.
>>
>> I am interested in generating a hypothetical dataframe that is consisted of say two variables named v1 and v2, based on the following constraints:
>> 1. The range of v1 is 500-1500.
>> 2. The mean of v1 is say 1100
>> 3. The range of v2 is 300-950.
>> 4. The mean of v2 is say 400
>> 5. There exists a positive trend between these two variables, meaning that as v1 increases, v2 be also increase.
>> 6. But the trend should be slightly non-linear. i.e., curved line.
>>
>> Is it possible to automatically generate through functions like rnorm.
>>
>> Any help will be highly appreciated.
>
> This sounds to me very much like a homework problem.  We don't do
> people's homework for them on this list.
>
> cheers,
>
> Rolf Turner
>
> --
> Technical Editor ANZJS
> Department of Statistics
> University of Auckland
> Phone: +64-9-373-7599 ext. 88276
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.