[R] calculating IRR (accounting) in R

From: paul sorenson <sourceforge_at_metrak.com>
Date: Thu 01 Dec 2005 - 07:50:23 EST

I am trying to replace a spreadsheet model of a project justification with an R script.

I can't seem to track down R functions to calculate Internal Rate of Return and NPV? Am I missing something? NPV doesn't seem so difficult to calculate (at least for a regular series) but I am struggling to identify how to solve for IRR in R.

It would be sufficient if it worked for a regular series but really useful if there was something that worked with irregular time series.


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