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I would like to draw a set of points that are equally spaced in a 2-D grid. Then I would like to draw lines that illustrate different directed paths through subsets of points. Imagine that the points correspond to booths in a conference center, and I want to show the various paths people took to visit the booths (using color to highlight different types of paths). An example path might be: [(1,1),

I am encountering problems using the png() function to save around 20 charts to separate files. My script is conceptually structured as follows: ### <script> png("Image %03d.png") # the following are calls to user-defined functions I wrote that call plot, barchart, etc. with special arguments. myPlot("a") myPlot("b") myPlot("c")

When I use barchart (with default formatting options), I get bars whose lengths/heights are not proportional to their value. For example: http://drop.io/wbagm6s/asset/capture-png Many of the values in this chart are 1; however, because the blue bars extend to the left of the "0" tick mark, those bars appear to represent higher numeric values. Is there a way to make the length of the

Let's say I have data in the following schema that describes the number of purchases a company has received from each County in the US: State | County | Purchases --------------------------------------- NJ | Mercer | 550 CA | Orange | 23 .... I would like to visualize what states contribute the most to the overall total, and furthermore within those states, what Counties contribute the most.

How can I write text inside a bar of a barplot? I tried using text(), but I am only able to specify the numeric y-coordinate. The different columns of my barplot correspond to factors and not numbers, so I don't know how to access the horizontal positions of the bars. I tried fiddling with different values of the "adj" argument, but this appears unreliable. Background: I have

Hi, I just started using R and am having trouble with the below error: I type: > df <- read.csv("/home/rex/Desktop/mytable.csv") which gives me what I want: ... 639 2006-05-26 16:46:54 4 16 640 2006-05-26 17:05:36 5 17 641 2006-05-26 17:30:48 6 17 But now I try: > plot(df[4],df[3]) Error in pmatch(x, table, duplicates.ok) : argument is not of

Hi, I just downloaded R, and am wondering about data sources. Where do people typically get their data for analysis? It seems to me most people would have their data somehow automatically gathered and stored in an SQL database (e.g. MySQL), but this seems not to be the case. Does everyone just use the plain-text tab-separated values format? If so, how are these tables typically created in the

Hello, I just installed Instant Rails on my Windows XP box. I would like to test out the Ruby interpreter on the command line. However, when I run C:\InstantRails\ruby\bin\ruby.exe from the Windows command prompt, it hangs. Any ideas on how I can get a Ruby command line? Thanks, Rex --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to

Hello Prof. Harrell and dear R-help mailing list, I wish to perform a non-parametric repeated measures anova. If what I read online is true, this could be achieved using a mixed Ordinal Regression model (a.k.a: Proportional Odds Model). I found two packages that seems relevant, but couldn't find any vignette on the subject: http://cran.r-project.org/web/packages/repolr/

Hello, I''m learning Rails right now, and as my first project I am trying to create a fun little useful website. However, I''m getting stuck on one of the steps, and was wondering what the easiest approach would be. What I''m specifically looking to do is to create "dynamic" forms, where the number of fields can be increased and decreased by the user.