search for: txdbh

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2011 Jul 22
1
3d plotting with cloud and wireframe
...in two variables to get a feel for sensitivity to its parameters. I've run expand.grid to get made-up vectors of the combinations of the two independent variables, and am trying to plot the output of the dependent, M, against both the dependent in a 3d space. t <- 0:100 DBH <- 10:100 TxDBH<-expand.grid(t,DBH) time<-TxDBH[,1] dbh<-TxDBH[,2] M <- 4000*(1-exp(-time*(1.104-(0.67*0.7)-0.163*log(dbh))^2)) I've tried wireframe(M~t|DBH, data=TxDBH) wireframe(M~time|dbh, data=M) wireframe(M~time|dbh) also the above model specifications using cloud. but I get the foll...