[R] Calculate AUC Using the Trapezoidal Method

Chris Campbell ccampbell at mango-solutions.com
Thu Dec 15 16:12:17 CET 2011

The arguments time, id and dv take character strings.

AUC(Data, time = "Time", id = "Fraction", dv = "Variable")  
  Fraction      AUC
1       C1 4413.549


Chris Campbell
Data Analysis that Delivers
+44 1249 767700

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of arivald
Sent: 15 December 2011 13:54
To: r-help at r-project.org
Subject: [R] Calculate AUC Using the Trapezoidal Method

I want to use function AUC {MIfuns} but I have problem with arguments.
My data:
 Fraction Time Variable
C1     0  0.00000
C1   15  20.95475
C1    30 28.55030
C1    60 36.33064
C1    90 48.80438
C1  120 60.18636
AUC(data, time = Time, id = Fraction, dv = Variable)  ##this is not working!


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