Talk:DataONE:Notebook/Data Citation and Sharing Policy/2010/07/22

re: plotting

• Heather A Piwowar 12:56, 22 July 2010 (EDT): Nice work, Nic. A few tips to make these plots easier to read for others, and for embedding in papers, later.
• add a title. Right after doing plot(response), do

title("This is a title")

and you should see it appear at the top of the plot

• rename your variable. I wasn't very creative in calling the new variable simple.var, so you can do way better :) Use a different variable name for the shared variable ("any.sharing.policy" or somehting) than for the cited instructions variable ( "any.cited.policy" or "has.policy.on.cite.format" or something). That will make the variable at the bottom of your plots (and your code) easier to decypher
• save as png and embed. Do you know how to save a figure in R? see

?png

for examples. Then you can upload to OWW, and I think make it show up in the body of your pages using

[[File:Example.png]]

as per http://www.mediawiki.org/wiki/Help:Images

multivariate logistic regression

• Heather A Piwowar 13:25, 22 July 2010 (EDT): If you want to peak ahead to multivariate logistic regression, here are a few resources to read and work through:
• http://www.ats.ucla.edu/stat/R/dae/logit.htm is a very practical example and I imagine that your analysis will progress pretty much as they lay it out. you'd substitute the

 admit~gre+gpa+topnotch

part with

 any.sharing.policy~impact.factor + is.biology

or whatever :)

• http://www.ats.ucla.edu/stat/stata/faq/oratio.htm for more of a gut feel on what the results mean. Note it gives an example in the stats program Stata not R, but similar.
• I'll try to pull up some more intro resources, and/or google "multivariate logistic regression" to find one that speaks to you. Also we'll chat through what it means. Just wanted to give you some links to try to read if you want some exposure....