Hi, yes, your x and y are increasing but the (x,y) coordinates are not unique. Looks like some measurements are redundant in your input. Michael > hello, > > i do the following in order to get an persp-plot > > x<-c(2,2,2,2,2,2,3,3,3,3) > y<-c(41,41,83,83,124,166,208,208,208,208) > z<-c(90366,90366,92240,92240,92240,96473,100995,100995,100995,100995) > x<-data$x > y<-data$y > z<-matrix(data$z,length(y),length(x)) > persp(x,y,z, col="gray") > > but i always get the error message increasing 'x' and 'y' values > expected, but i think my data values are already increasing, what is wrong? > > best regards > andreas > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html
______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
