search for: contractdate

I am trying to dp a 3d plot. I tried persp but my data is not a matrix. the 3dplot function returns this error, (list) object cannot be coerced to 'double' heres my code, td<-read.csv("td.csv", header=TRUE) price<-read.csv("price.csv", header=TRUE) contractdate<-read.csv("contractdate.csv", header=TRUE) library(rgl) plot3d(td,contractdate,price) the 3 csv data files have the following format, 1 2 3 4 5 6 ... 60,000 basically I have 3 columns, x y and z that have 60000 rows (data points) I want to plot....

Hi, How to unlist list column value and add column into data frame. Data frame ID ContractDe PassengersDe TrainnerDe 1 list(ConID=c("Zx","78yu"),ConRes = c("98","Tut")) list(PassID