Re: [R] Help needed with Waterfall plot

From: Thomas Petzoldt <thpe_at_simecol.de>
Date: Fri, 31 Oct 2008 17:38:12 +0100

Philip Twumasi-Ankrah schrieb:
> Hi friends,
> I need suggestions/directions on how to producing a waterfall plot for present extend of change in tumour size for a set of respondents in a study. Example of use of waterfall plot is in the following slides presented at ASCO 2007 by Axel Grothey. Link is
>
> http://media.asco.org/player/default.aspx?LectureID=AG265&conferenceFolder=GI2007&SessionFolder=Poster&slideonly=yes&TrackID=N929&LectureTitle=Waterfall%20plots%20provide%20detailed%20information%20on%20magnitude%20of%20response%20to%20conventional%20chemotherapy%20in%20colorectal%20cancer%3a%20Lessons%20learned%20from%20N9741.&Key=vm_45_3_26_265&SpeakerName=%3b%20Presenter%3a%20Axel%20Grothey%2c%20MD&mediaURL=%2fmedia&ServerName=media.asco.org&max=12&ext=jpg&useASX=false&playtype=&playtype=&playtype=,
>
> The link is pretty long but it takes you right to the presentation.

Hi Phillip,

is this a "waterfall plot":

## a few data
x <- 0:99
y <- sort(rnorm(100), decreasing=TRUE)

# the plot
plot(y, type="n")
polygon(c(min(x), x, max(x), 0), c(0, y, 0, 0), col="green")

Thomas P.



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