[R] my first R program

From: <kannaiah_at_bsd.uchicago.edu>
Date: Sat 20 May 2006 - 08:35:05 EST


Hello,

This is my first attempt at using R. Still trying to figure out and understand how to work with data frames.
I am trying to plot the following data(example). Some experimental data i am trying to plot here.

  1. i have 2 files
  2. First File: Number Position 1 120 2 134 3 156 4 169 5 203
  3. Second File: Col1 Col2 p-val 1 2 0.45 1 2 0.56 2 3 0.56 2 3 0.68 2 3 0.88 3 4 0.76 3 5 0.79 3 5 0.92

I am trying to plot this with "position" as x-axis and "p-val" as the y-axis. The col1 and col2 in the second file correspond to the number column in first file.

I am having trouble to figure out how to associate the col1 and col2 with their corresponding position values

The x-axis should start with 120 as that is the min value and next values should be spaced proportionally away from the first. I tried using the percentage method to place them...but couldnt completely get it correct.

so it would look like :

	|   |        |    |          |
	120 134      156  169        203

Hopefully i explained it correctly.

i would like to plot the p-value as horizontal lines drawn between the col1 and col2 values (ie: positions)
So, the plot will have as many horizontal lines as the rows in the second file. And ONE reference horizontal line passing thru the plot at p-val=0.5, to see what values lie below that and what above it.

I have made some progress in plotting the horizontal axis, but having trouble bringing all the data together.Not sure yet how to manipulate them using the data frames:(

Any suggestions and tips will be greatly appreciated.

Thank you
-Kiran



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