[R] Dataframe Manipulation

Hemant Sain hemantsain55 at gmail.com
Wed Aug 30 10:01:23 CEST 2017


Hey PIKAL,
It's not a homework neithe that is the real dataset i have signer NDA for
my company so that i can share the original data file, Actually I'm working
on a market basket analysis task but not able to convert my existing data
table to appropriate format so that i can apply Apriori algorithm using R,
and this is very important me to get it done because I'm an intern and if i
won't get it done they will not  going to hire me as a full-time employee.
i tried everything by myself but not able to get it done.
your precious 10-15 can save my upcoming years. so please if you can please
help me through this.
i want another dataset based on first two dataset i have mentioned .

Thanks

On 30 August 2017 at 12:49, PIKAL Petr <petr.pikal at precheza.cz> wrote:

> Hi
>
> It seems to me like homework, there is no homework policy on this help
> list.
>
> What do you want to do with your table 3? It seems to me futile.
>
> Anyway, some combination of melt, merge, cast and regular expressions
> could be employed in such task, but it could be rather tricky.
>
> But be aware that
>
> Suger does not match sugar (I wonder that sugar is dairy product)
>
> and you mix uppercase and lowercase letters which could be also
> problematic, when matching words.
>
> Cheers
> Petr
>
> > -----Original Message-----
> > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Hemant
> Sain
> > Sent: Wednesday, August 30, 2017 8:28 AM
> > To: r-help at r-project.org
> > Subject: [R] Dataframe Manipulation
> >
> > i want to do a market basket analysis and I’m trying to create a dataset
> for that
> > i have two tables, one table contains daily transaction of products in
> which
> > each row of table shows item purchased by the customer, The second table
> > contains parent group under those products are fallen, for example under
> fruit
> > category there are several fruits like mango, banana, apple etc.
> > i want to create a third table in which parent group are mentioned as
> header
> > which can be extracted from Table 2, and all the rows represent
> transaction of
> > products
> >
> > with their names, and if there is no transaction for any parent category
> then
> > the cell supposed to fill as NA. please help me with R or C/c++ code( R
> would be
> >
> > preferred) here I’m attaching you all three tables for better reference
> i have
> > first two tables and i want to get a table like table 3
> >
> > Tables are explained in the attached doc.
> >
> > --
> > hemantsain.com
>
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-- 
hemantsain.com

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