[R] Beta-coefficients for ZINB model

2012-12-14 Thread Jeremy Goss
Dear users, Does anyone have any idea how to generate standardised beta coefficients for a ZINB model in R to compare which explanatory variables are having the greatest impact on the dependent variable? Thanks, Jeremy [[alternative HTML version deleted]] ___

[R] Marginal effects of ZINB models

2012-12-10 Thread Jeremy Goss
Dear all, I am modeling the incidence of recreational anglers along a stretch of coastline, and with a vary large proportion of zeros (>80%) have chosen to use a zero inflated negative binomial (ZINB) distribution. I am using the same variables for both parts of the model, can anyone help me with R

[R] Generating repeated network measures in R

2012-01-27 Thread Jeremy Goss
I am working on directed network data of the following form: Origin farm Destination farm Year Farm 1 -> Farm 21999 Farm 1 -> Farm 31999 Farm 3 -> Farm 22000 Farm 1 -> Farm 2