Perspective Plotting - 3D Plotting in R

Hi Tran ,
It is not relevant to your answer but I want to ask you where do you look
for the answer ? I have posted a question but Don?t know where goes the
relevant answers. I am new for this system if you could help me I would
appreciate.
Best ,
Farzaneh



-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Thanh Tran
Sent: den 26 november 2018 13:13
To: r-help at r-project.org
Subject: [R] Perspective Plotting - 3D Plotting in R

Dear all,



I'm trying to plot a surface over the x-y plane. In my data, the response
is KIC, and four factors are AC, AV, T, and Temp. A typical second-degree
response modeling is as follows

data<-read.csv("2.csv", header =T)

mod <-
lm(KIC~AC+I(AC^2)+AV+I(AV^2)+T+I(T^2)+Temp+I(Temp^2)+AC:AV+AC:T+AC:Tem
p+AV:T+AV:Temp+T:Temp,

+ data = data)



I want to have a response surface of KIC with two factors, i.e., AC and AV
as shown in the attached figure.

When I run the below code, I have a problem which indicates ?object 'AC'
not found? even though I added ?data = data?

persp(AC,AV,KIC~ AC + I(AC^2) + AV + I(AV^2) + AC:AV,image =
TRUE,theta=30,

+ data = data)

Error in persp(AC, AV, KIC ~ AC + I(AC^2) + AV + I(AV^2) + AC:AV, image =
TRUE,  :

  object 'AC' not found



If anyone has any experience about what would be the reason for error or
how I can solve it? Is there other simple function to plot the response
surface?

I really appreciate your support and help.



Best regards,

Nhat Tran



Ps: I also added a CSV file for practicing R.