KC R Users Meeting Saturday 2pm

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Madelaine Gogol

Feb 15, 2013, 1:23:48 PM2/15/13
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Just a reminder - KC R users group meeting tomorrow at 2pm in the small meeting room, Plaza library. Small meeting room is on the right as you round the corner toward the children's section. 

Earl is going to discuss aggregation of data frames, and if Steve makes it, he'll talk about integration of BUGS and R and show some examples, and anyone participating in the coursera data analysis course can feel free to discuss it.

I got a swag shipment from Revolution analytics if anyone is feeling low on flying R monkeys or needs an R t-shirt. Perhaps I should explore alternate uses for t-shirts such as dust rags, pillow cases, or quilts, because we really have too many. Maybe next year I'll tell them to skip the swag box...

The next meeting is scheduled for May 4th at 2pm in the plaza library large meeting room -- I'm skipping April because rooms were booked + I'm going to be kind of busy with a tiny baby.


Earl F. Glynn

Feb 16, 2013, 1:05:49 AM2/16/13
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See attached two pages of notes about aggregation in Access and R that I'll talk about today.

From: kansas-city-...@googlegroups.com [mailto:kansas-city-...@googlegroups.com] On Behalf Of Madelaine Gogol
Sent: Friday, February 15, 2013 12:24 PM
To: kcrusersgroup; kansas-city-...@googlegroups.com
Subject: KC R Users Meeting Saturday 2pm


Johnston, Jeffrey

Feb 16, 2013, 11:05:52 AM2/16/13
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Hi Earl & everyone else,

I've written up a document showing two additional aggregation techniques in R. One uses the plyr package and another uses the data.table package. I can speak more about it after you if we have time.

Generated document:

Source document (knitr):


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Malcolm Cook

Feb 16, 2013, 11:07:41 AM2/16/13
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if I were going I would have to add package `sqldf` to the mix

query your data frame as thought it were an sql table!

alas gamelan calls.


Earl F. Glynn

Feb 16, 2013, 11:50:16 AM2/16/13
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Thanks for your ddply examples and the additional motivation to look at knitr.  ddply looks cleaner.
I hope to see everyone in a few hours.

From: kansas-city-...@googlegroups.com [mailto:kansas-city-...@googlegroups.com] On Behalf Of Johnston, Jeffrey
Sent: Saturday, February 16, 2013 10:06 AM
To: kansas-city-...@googlegroups.com; 'kcrusersgroup'
Subject: Re: KC R Users Meeting Saturday 2pm

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