Mean Absolute Percentage Error in R

[Darth Frodo]

Hi all,

I'm trying to calculate the M.A.P.E. using the accuracy() function in SDMtools.

I have an output of 10.69. I'm not sure if this is 10.69% or 1069% as previously in a different model I had gotten an output of 0.34.

If anyone is familiar with this, I would appreciate any help.

Thanks.

 

[mathman]

Without context, it is very hard to respond.

 

[Darth Frodo]

Well I assumed the answer would be objective given that you are always required to enter the observed and predicted values.

Regardless, what context would you like?

 

[mathman]

You are using something called SDMtools. I would hope that there would be a description of the units, etc. of its input and output. Without such a description, 10.69 has no meaning.

 

[MarneMath]

I thought about this for a day, and it's been a long time since I've used R. However, using accuracy() does not return a MAPE. However, the package for time series and linear modeling, (I think it's simply called Forecast package, been awhile) does return a MAPE and if you are using that then your answer would be in a percentage.

 

[Darth Frodo]

Yeah MarneMath, I think you're right. Thanks!