Posts Tagged ‘ plot ’

R: More plotting fun with Poission

May 28, 2010
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R: More plotting fun with Poission

Coded as follows: x = seq(.001,50,.001) par(bg="black") par(mar=c(0,0,0,0)) plot(x,sin(1/x)*rpois(length(x),x),pch=20,col="blue")

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First annual R plot replication prize

May 3, 2010
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First annual R plot replication prize

$100 to the first person who can figure out how I created this plot and replicate it. Some hints: It was done in R. There is only one underlying probability distribution involved (one “rdist()“). Including the “plot” statement, I created this with 3 short lines of code. This is based on a random sampling of unstated size, so

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R: more plotting fun, this time with the Poisson

April 21, 2010
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R: more plotting fun, this time with the Poisson

Click on image for a larger version. Here is the code: par(bg="black") par(mar=c(0,0,0,0)) plot(sort(rpois(10000,100))/rpois(10000,100),frame.plot=F,pch=20,col="blue")

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Summarising data using scatter plots

April 18, 2010
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Summarising data using scatter plots

A scatter plot is a graph used to investigate the relationship between two variables in a data set. The x and y axes are used for the values of the two variables and a symbol on the graph represents the combination for each pair of values in the data set. This type of graph is

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R: another nifty graph

April 8, 2010
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R: another nifty graph

Make sure to click on the image to see the large version. Code for this graph: moxbuller = function(n) { u = runif(n) v = runif(n) x = cos(2*pi*u)*sqrt(-2*log(v)) y = sin(2*pi*v)*sqrt(-2*log(u)) r = list(x=x, y=y) return(r) } r = moxbuller(50000) par(bg="black") par(mar=c(0,0,0,0)) plot(r$x,r$y, pch=".", col="blue", cex=1.2)

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Summarising data using dot plots

March 26, 2010
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Summarising data using dot plots

A dot plot is a type of display that compares counts, frequencies, totals or other summary measures for a series of categories. The dot plot can be arranged with the categories either on the vertical or horizontal axis of the display to allow comparising between the different categories as well as comparison within categories where

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R plotting fun

March 25, 2010
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R plotting fun

Not easy to produce cool looking graphs in R, but it can be done. The results of some messing around are above. Here is the code I used:

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R: Add vertical line to a plot

March 21, 2010
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If you have a plot open and want to add a vertical line to it: abline(v=20) #Add vertical line at x=20

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Nutritional supplements efficacy score – Graphing plots of current studies results (using R)

February 25, 2010
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Nutritional supplements efficacy score – Graphing plots of current studies results (using R)

In this post I showcase a nice bar-plot and a balloon-plot listing recommended Nutritional supplements , according to how much evidence exists for thier benefits, scroll down to see it(and click here for the data behind it) * * * * The gorgeous blog “Information Is Beautiful” recently publish an eye candy post showing a “balloon race” image...

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ggplot2: Two Color XY-Area Combo Chart

October 21, 2009
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ggplot2: Two Color XY-Area Combo Chart

[email protected] blog shows how to fill in the area between two crossing lines in an Excel chart. This post was also published as a guest-post on PTS blog. Let’s try to replicate this graph in ggplot2. First, load ggplot2 and generate the data frame to be used in the example (I am using a slightly

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