> I'm a bit new to the world of R so forgive my ignorance. That has nothing to do with the knowledge of R but with the model. Age has only 2 different values: 0 and 1 and if it is 0 there is no scars, so what exactly have you expected from the model?
I would say if you just want to prove that older deer have more scars try the Mann Whitney non parametric test... Stefan > I'm trying to do a zero-inflated negative binomial regression and have > received an error message and i'm not sure what it means. I'm running R > 2.5.1 on XP. I have just tried a really simple version of the model to see > if it would run before I put all the variables in. I have attached all the > variables to the object alan. > > Here is the table: > > Date Location Deer Code Sex Age Pel Per Lac Scars Emb Lar Nym Bee Mi > Mass > 1 12/06/2007 Ballysallagh 0 B1 FALSE 1 A 1 1 4 0 0 0 > 0 0 21.59 > 2 15/06/2007 Ballysallagh 0 B10 FALSE 1 A 1 1 5 0 0 0 > 0 2 26.19 > 3 15/06/2007 Ballysallagh 0 B12 FALSE 1 A 1 1 0 5 0 0 > 0 1 28.55 > 4 15/06/2007 Ballysallagh 0 B13 FALSE 1 A 0 1 5 0 0 0 > 4 45 23.93 > 5 15/06/2007 Ballysallagh 0 B16 FALSE 1 A 1 1 0 4 0 0 > 0 1 34.19 > 6 15/06/2007 Ballysallagh 0 B17 FALSE 1 A 1 1 5 0 0 0 > 0 0 25.02 > 7 15/06/2007 Ballysallagh 0 B18 FALSE 1 A 1 1 5 0 0 0 > 0 7 33.06 > 8 12/06/2007 Ballysallagh 0 B5 FALSE 1 A 1 1 4 0 0 0 > 0 2 23.55 > 9 12/06/2007 Ballysallagh 0 B6 FALSE 1 A 1 1 4 0 0 0 > 0 2 22.67 > 10 12/06/2007 Ballysallagh 0 B7 FALSE 1 A 1 1 5 0 0 0 > 0 2 22.57 > 11 12/06/2007 Ballysallagh 0 B8 FALSE 1 A 1 1 5 0 0 0 > 0 10 24.01 > 12 24/06/2007 Caledon 1 C12 FALSE 1 A 1 0 0 0 1 0 > 0 3 21.68 > 13 25/06/2007 Caledon 1 C17 FALSE 1 A 1 0 4 0 1 0 > 0 23 20.56 > 14 25/06/2007 Caledon 1 C18 FALSE 1 A 1 0 0 0 0 0 > 2 2 17.47 > 15 25/06/2007 Caledon 1 C20 FALSE 1 A 1 0 8 0 0 0 > 0 3 19.97 > 16 25/06/2007 Caledon 1 C21 FALSE 1 A 1 0 3 0 2 0 > 0 20 20.58 > 17 25/06/2007 Caledon 1 C24 FALSE 1 A 1 0 0 4 2 0 > 0 7 17.37 > 18 25/06/2007 Caledon 1 C27 FALSE 1 A 1 0 0 0 3 0 > 0 6 24.14 > 19 25/06/2007 Caledon 1 C28 FALSE 1 A 1 0 0 5 1 0 > 0 6 21.58 > 20 25/06/2007 Caledon 1 C33 FALSE 1 A 0 0 0 0 1 0 > 0 0 19.06 > 21 25/06/2007 Caledon 1 C35 FALSE 1 A 1 0 3 0 2 0 > 0 20 24.55 > 22 24/06/2007 Caledon 1 C4 FALSE 1 A 1 1 4 3 0 0 > 0 5 22.65 > 23 24/06/2007 Caledon 1 C8 FALSE 1 A 0 0 0 0 3 0 > 0 3 23.08 > 24 01/06/2007 Hillsborough 0 H11 FALSE 1 A 1 1 4 0 0 0 > 0 0 23.01 > 25 01/06/2007 Hillsborough 0 H16 FALSE 1 A 1 1 5 0 0 0 > 0 0 18.18 > 26 01/06/2007 Hillsborough 0 H17 FALSE 1 A 1 1 4 0 0 0 > 0 0 24.45 > 27 01/06/2007 Hillsborough 0 H19 FALSE 1 A 0 1 0 0 0 0 > 0 3 21.01 > 28 01/06/2007 Hillsborough 0 H2 FALSE 1 A 1 1 5 0 0 0 > 0 1 24.86 > 29 01/06/2007 Hillsborough 0 H21 FALSE 1 A 1 1 5 0 0 0 > 0 0 20.48 > 30 01/06/2007 Hillsborough 0 H25 FALSE 1 A 1 1 5 0 0 0 > 0 0 22.09 > 31 01/06/2007 Hillsborough 0 H26 FALSE 1 A 1 1 5 0 0 0 > 0 0 20.18 > 32 01/06/2007 Hillsborough 0 H3 FALSE 1 A 0 1 5 0 0 0 > 0 0 25.82 > 33 01/06/2007 Hillsborough 0 H34 FALSE 1 A 1 0 0 4 0 0 > 0 1 18.78 > 34 01/06/2007 Hillsborough 0 H35 FALSE 1 A 0 1 4 0 0 0 > 0 0 20.02 > 35 01/06/2007 Hillsborough 0 H5 FALSE 1 A 0 1 5 0 0 0 > 0 0 19.58 > 36 01/06/2007 Hillsborough 0 H6 FALSE 1 A 1 1 5 0 0 0 > 0 6 28.84 > 37 16/06/2007 LoughNavar 1 LN1 FALSE 1 A 1 1 5 0 3 0 > 0 1 22.71 > 38 16/06/2007 LoughNavar 1 LN10 FALSE 1 A 1 1 5 0 0 0 > 0 0 23.53 > 39 16/06/2007 LoughNavar 1 LN11 FALSE 1 A 1 1 4 0 0 0 > 0 2 33.24 > 40 16/06/2007 LoughNavar 1 LN13 FALSE 1 A 1 1 5 0 0 0 > 0 0 20.20 > 41 16/06/2007 LoughNavar 1 LN14 FALSE 1 A 1 1 0 7 0 0 > 1 1 31.35 > 42 16/06/2007 LoughNavar 1 LN16 FALSE 1 A 1 1 0 5 0 0 > 0 2 19.43 > 43 16/06/2007 LoughNavar 1 LN18 FALSE 1 A 1 0 6 0 0 0 > 0 12 24.30 > 44 16/06/2007 LoughNavar 1 LN23 FALSE 1 A 1 1 5 0 0 0 > 0 1 24.34 > 45 16/06/2007 LoughNavar 1 LN7 FALSE 1 A 1 1 5 0 1 0 > 0 0 28.01 > 46 16/06/2007 LoughNavar 1 LN9 FALSE 1 A 1 1 4 0 8 0 > 0 5 25.43 > 47 11/07/2007 Mt.Stewart 0 M1 FALSE 1 A 1 0 5 0 0 0 > 0 1 25.31 > 48 11/07/2007 Mt.Stewart 0 M18 FALSE 1 A 1 1 0 0 0 0 > 0 2 26.66 > 49 11/07/2007 Mt.Stewart 0 M21 FALSE 1 A 0 0 3 0 0 0 > 0 7 23.70 > 50 11/07/2007 Mt.Stewart 0 M4 FALSE 1 A 1 0 4 0 0 0 > 0 1 27.05 > 51 05/06/2007 Portglenone 0 P10 FALSE 1 A 1 0 5 0 0 0 > 1 1 21.08 > 52 05/06/2007 Portglenone 0 P13 FALSE 1 A 1 1 0 5 0 0 > 0 23 34.07 > 53 05/06/2007 Portglenone 0 P14 FALSE 1 A 1 1 4 0 0 0 > 0 5 29.00 > 54 05/06/2007 Portglenone 0 P17 FALSE 1 A 1 1 6 0 0 0 > 0 1 23.61 > 55 11/06/2007 Portglenone 0 P18 FALSE 1 A 1 0 4 0 0 0 > 1 25 19.76 > 56 11/06/2007 Portglenone 0 P19 FALSE 1 A 1 0 5 0 0 0 > 0 25 19.13 > 57 05/06/2007 Portglenone 0 P5 FALSE 1 A 1 0 4 0 0 0 > 0 11 19.10 > 58 05/06/2007 Portglenone 0 P7 FALSE 1 A 1 1 2 0 0 0 > 0 1 26.02 > 59 29/05/2007 Randalstown 1 R5 FALSE 1 A 1 1 0 0 1 0 > 3 0 26.70 > 60 30/06/2007 Somerset 0 S14 FALSE 1 A 1 0 0 4 0 0 > 0 3 22.20 > 61 30/06/2007 Somerset 0 S15 FALSE 1 A 1 1 4 0 0 0 > 1 11 33.36 > 62 30/06/2007 Somerset 0 S17 FALSE 1 A 1 0 3 0 0 0 > 0 1 27.10 > 63 30/06/2007 Somerset 0 S2 FALSE 1 A 1 0 0 0 0 0 > 2 4 27.87 > 64 03/07/2007 Somerset 0 S25 FALSE 1 A 1 0 6 0 0 0 > 0 2 27.34 > 65 03/07/2007 Somerset 0 S28 FALSE 1 A 1 0 5 0 0 0 > 0 4 23.83 > 66 03/07/2007 Somerset 0 S29 FALSE 1 A 1 0 4 4 0 0 > 0 4 21.51 > 67 03/07/2007 Somerset 0 S31 FALSE 1 A 1 0 4 0 0 0 > 0 17 27.01 > 68 03/07/2007 Somerset 0 S35 FALSE 1 A 0 0 0 0 0 0 > 0 2 15.60 > 69 30/06/2007 Somerset 0 S7 FALSE 1 A 1 1 0 0 0 0 > 0 5 25.58 > 70 30/06/2007 Somerset 0 S9 FALSE 1 A 1 1 4 0 0 0 > 0 3 31.87 > 71 29/05/2007 Tollymore 1 T13 FALSE 1 A 1 0 0 0 1 0 > 0 0 20.24 > 72 29/05/2007 Tollymore 1 T16 FALSE 1 A 0 0 0 4 9 0 > 0 1 17.43 > 73 29/05/2007 Tollymore 1 T19 FALSE 1 A 1 0 5 0 3 0 > 0 0 19.50 > 74 29/05/2007 Tollymore 1 T23 FALSE 1 A 1 0 0 5 6 0 > 0 1 18.67 > 75 29/05/2007 Tollymore 1 T24 FALSE 1 A 1 0 0 0 0 0 > 0 2 16.55 > 76 29/05/2007 Tollymore 1 T30 FALSE 1 A 1 0 0 0 2 0 > 0 2 20.88 > 77 29/05/2007 Tollymore 1 T4 FALSE 1 A 1 0 0 0 3 0 > 2 0 16.43 > 78 29/05/2007 Tollymore 1 T6 FALSE 1 A 1 0 0 5 28 0 > 4 0 17.50 > 79 29/05/2007 Tollymore 1 T9 FALSE 1 A 1 0 4 0 3 0 > 0 0 20.58 > 80 15/07/2007 Tullychurry 1 TC1 FALSE 1 A 1 0 0 0 9 0 > 0 0 25.27 > 81 16/07/2007 Tullychurry 1 TC12 FALSE 1 A 1 0 5 0 44 1 > 0 4 24.83 > 82 16/07/2007 Tullychurry 1 TC15 FALSE 1 A 1 0 5 0 5 0 > 0 14 22.28 > 83 16/07/2007 Tullychurry 1 TC18 FALSE 1 A/J 0 0 0 0 15 0 > 9 0 13.87 > 84 16/07/2007 Tullychurry 1 TC23 FALSE 1 A 1 0 0 4 23 0 > 0 1 27.00 > 85 15/07/2007 Tullychurry 1 TC3 FALSE 1 A 0 1 6 0 75 0 > 0 4 22.43 > 86 15/07/2007 Tullychurry 1 TC4 FALSE 1 A 1 0 0 5 16 0 > 0 1 26.73 > 87 15/07/2007 Tullychurry 1 TC6 FALSE 1 A 1 0 2 0 5 0 > 0 8 21.28 > 88 15/07/2007 Tullychurry 1 TC7 FALSE 1 A 1 1 6 0 42 0 > 1 1 28.55 > 89 15/07/2007 Tullychurry 1 TC8 FALSE 1 A 1 0 3 0 3 0 > 0 0 20.13 > 90 15/06/2007 Ballysallagh 0 B11 FALSE 0 A/J 0 0 0 0 0 0 > 0 0 13.82 > 91 24/06/2007 Caledon 1 C16 FALSE 0 J 0 0 0 0 0 0 > 0 3 8.40 > 92 20/06/2007 Caledon 1 C2 FALSE 0 J 0 0 0 0 0 0 > 0 0 8.08 > 93 16/06/2007 LoughNavar 1 LN2 FALSE 0 A/J 0 0 0 0 0 0 > 0 2 8.71 > 94 18/06/2007 LoughNavar 1 LN27 FALSE 0 A 0 0 0 0 0 0 > 0 1 16.90 > 95 18/06/2007 LoughNavar 1 LN34 FALSE 0 J 0 0 0 0 0 0 > 1 2 9.38 > 96 11/07/2007 Mt.Stewart 0 M10 FALSE 0 J 0 0 0 0 0 0 > 0 2 12.52 > 97 11/07/2007 Mt.Stewart 0 M12 FALSE 0 A 0 0 0 0 0 0 > 0 6 16.18 > 98 11/07/2007 Mt.Stewart 0 M3 FALSE 0 J 0 0 0 0 0 0 > 0 5 11.42 > 99 15/05/2007 Randalstown 1 R1 FALSE 0 A 0 0 0 4 44 0 > 4 0 15.72 > 100 11/06/2007 Randalstown 1 R19 FALSE 0 A 0 0 0 0 2 0 > 0 7 15.20 > 101 30/06/2007 Somerset 0 S12 FALSE 0 A 0 0 0 0 0 0 > 1 7 14.04 > 102 03/07/2007 Somerset 0 S19 FALSE 0 A 0 0 0 0 0 0 > 0 3 15.00 > 103 29/05/2007 Tollymore 1 T11 FALSE 0 A 1 0 0 0 2 0 > 3 0 16.30 > 104 29/05/2007 Tollymore 1 T28 FALSE 0 A 0 0 0 0 0 0 > 0 0 14.49 > > And here is the syntax is used to run the ZINB with the error message, any > help greatly appreciated. > > >> zinb.zc<- zicounts(resp=Scars~.,x=~Age,z=~Age, data=alan) >> > Error in solve.default(z0$hessian) : system is computationally singular: > reciprocal condition number = 3.44599e-18 > > > Cheers > Alan > > Alan Harrison > > Quercus > Queen's University Belfast > MBC, 97 Lisburn Road > Belfast > > BT9 7BL > > T: 02890 972219 > M: 07798615682 > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.