A task with some goals
See what progress you can make on this task using the tutorial, the
help resources on the DVD, talking to your classmates, and maybe
checking the web. We will post a worked solution to this, or an
equivalent task after the weekend.
- The following is a link to a file containing some comments I
wrote in R code to a co-author: http://potis.org/tutorial/textbit.txt.
Get it. There are at least three ways. As you work through this task,
keep in mind that the purpose is to give you a chance to try out your
tools and to get familiar with using the help files and the documentation.
- Use the Emacs to clean the file. There are at least three ways to
get rid of the comment marks for example: replace-string, replace-regular-expression, kill-rectangle, and delete one at a time.
There are even four ways to delete the pound signs. Use the help to
see and the guides to see if you can find the three good ways.
- After cleaning the text, get it into a LaTeX document, following the
LaTeX tutorial. There are at least two ways to get the text into a
LaTeX document, kill and yank into a blank file ending in .tex, save
to a file with some other file ending, like .txt, and then using the
insert-file function, typing it by hand, and using the mouse.
- Next, start R. Get some data, and have a look at it in R.
This data was produced by save() in R. See the help on that topic
and on download.file() to figure out how to load it. At least two ways
will work. One involves using eshell to create a directory. Try
both. Use ls() to see what was loaded.
This data is not guaranteed to be meaningful or usable.
Following the R tutorial, search the R help resources for methods of
summarizing and inspecting data objects.
If any of the methods you have learned seem appropriate to this type
of data, look at the help for those methods and try them out on the
Look in the R help for information on functions for generating tables
in LaTeX format.
Look in the R help for saving plots to graphics files. The appropriate
keyword is device. Try sending output to a pdf device, and a png
device. Look at the png with your web browser.
Figure out how to include the pdf graphic, and a table of analysis
or summary into your LaTeX file.
Finally, add a bibliography and a title to your paper.
Last modified: Fri Jun 1 05:35:14 EDT 2007