# KC R Users group: next meeting saturday, feb 25th

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Feb 14, 2012, 1:11:59 PM2/14/12
Just a heads up, our next meeting will be in less than 2 weeks...

Saturday, Feb. 25th at 2pm at the Plaza branch of the Kansas City Public Library. Earl Glynn will talk about something interesting, I'm sure. (Voter data?).

You can RSVP here if you want, 4 people are signed up so far:
http://groupspaces.com/KCRUsersGroup/

Did anyone watch the Hadley Wickham webinar? Here's the replay...
http://blog.revolutionanalytics.com/2012/02/slides-and-replay-for-a-backstage-tour-of-ggplot2.html

Paste this into R for a special R valentine:

dat<- data.frame(t=seq(0, 2*pi, by=0.1) )
xhrt <- function(t) 16*sin(t)^3
yhrt <- function(t) 13*cos(t)-5*cos(2*t)-2*cos(3*t)-cos(4*t)
dat\$y=yhrt(dat\$t)
dat\$x=xhrt(dat\$t)
with(dat, plot(x,y, type="l"))
with(dat, polygon(x,y, col="hotpink"))
points(c(10,-10, -15, 15), c(-10, -10, 10, 10), pch=169, font=5)

from:
http://stackoverflow.com/questions/8082429/plot-a-heart-in-r

Feb 21, 2012, 3:53:13 PM2/21/12
Hi KC R users,

Earl has an event to cover in Topeka this Saturday (duty calls), and he won't be able to attend our meeting... Anybody else have anything they'd like to share?

The meeting's at 2pm Saturday, plaza branch of the KC public library in the large meeting room (come in, veer to the right, look for the cow).

Hope to see you then,

### Brian Pattiz

Feb 21, 2012, 9:08:59 PM2/21/12
Show and tell?  Everyone should bring something interesting that you've done in R lately.

Feb 22, 2012, 12:34:22 PM2/22/12
Sounds good to me. Thanks for the suggestion, Brian.

Feb 27, 2012, 10:23:11 PM2/27/12
Thanks to everyone who came out for our R user group saturday! Good to see you. Glad to unload a little more of my swag box.

Bob is still learning R (aren't we all) and showed some plots he made regarding Peyote use among Native and non-native american populations.

I talked briefly about using layout() to make a heatmap and corresponding scale, d3.js (not R, but neat), mic/mine (http://www.exploredata.net/), and Machine Learning for Hackers

Brian showed us some of his work, he's helping to create interactive plots for utility curves that will eventually be included in a textbook by a famous economist!

Ariel hinted at presenting something on regular expressions in R. Hopefully we can have Ariel and Earl both present next time?

At the end, I mentioned three ideas for our 100\$ of sponsorship money from revolution analytics:

1) Lottery - you get one entry every time you show up and one extra entry every time you present.
2) Some kind of contest for the best presentation
3) Party at the end of the year: Food or Beer. (We should do this anyway.)

So think about which idea appeals to you the most and we'll decide next time. I have reserved the large meeting room at the plaza library for April 7th at 2pm.

### Earl F. Glynn

Feb 28, 2012, 10:42:42 AM2/28/12
Thanks for the update.

The book Machine Learning for Hackers looks worth exploring.

efg