Plot a 3D linear surface from 2D functions in R -
i have following data:
x <- c(1000,2000,3000,4000,5000,6000,8000,12000) y_80 <- c(33276,33276,5913,2921,1052,411,219,146) y_60 <- c(14724,14724,3755,1958,852,372,211,140) y_40 <- c(9632,9632,2315, 1250,690,332,196,127) y_20 <- c(4672,4672,1051,562,387,213,129,81) y_5 <- c(825,825,210,118,88,44,27,17)
from data create 5 spline functions:
f_80 <- splinefun(x, y_80, method=c("monoh.fc")) f_60 <- splinefun(x, y_60, method=c("monoh.fc")) f_40 <- splinefun(x, y_40, method=c("monoh.fc")) f_20 <- splinefun(x, y_20, method=c("monoh.fc")) f_5 <- splinefun(x, y_5, method=c("monoh.fc"))
the z axle number after f_ i.e. function f_80 z value 80 , on.
what needed plot 3d surface functions, linear interpolation between lines. possible in r? have similar questions can't find answer. thanks
there variety of r pseudo-3d plotting functions. base-graphics has persp
, , wireframe
in lattice, , coolest of all, surface3d
in rgl. differ in how handle axis arguments accept matrix argument z-values. `persp simplest:
z_80 <- f_80(x) z_60 <- f_60(x) z_40 <- f_40(x) z_20 <- f_20(x) z_5 <- f_5(x) png(); persp(matrix(c(z_80, z_60, z_40, z_20, z_5 ), nrow=length(x), dimnames= list(x=x, y=c(80,60,40,20,5) ) ) ) dev.off()
you might find using ticktype="detailed"
more informative:
png(); persp(matrix(c(z_80,z_60,z_40,z_20,z_5 ), nrow=length(x), dimnames=list(x=x, y=c(80,60,40,20,5) ) ) , ticktype="detailed", xlab="x axis", ylab="y axis", zlab=". z= f(y)", theta=45) ; dev.off()
i need play viewing angle theta like. getting z-axis label move away long z-tick-labels hack.
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