Dear All, I would like to automate the analysis and plotting of data taken from a grid. Typically I deal with 2 spatial coordinates and a scalar f(x,y), but the spatial grid is not evenly spaced at all and usually given in this form: x y f(x,y) 0.0 0.048979383 2.7659438106975056 0.0 0.044986665 2.603891585041688 0.0023807306 0.04787451 2.715949356768243 0.0 0.040993948 2.469223979694342 0.0023807306 0.043881793 2.5625191444824265 0.004761461 0.046769638 2.6629703119429022 0.0 0.03700123 2.361940994655468 0.0023807306 0.039889075 2.436480700580665 0.004761461 0.04277692 2.517958884562618 0.0071421918 0.045664765 2.606844303834078 0.0 0.060880877 3.470808435449538 0.0 0.05691371 3.1907723461238686 0.0020467786 0.059650626 3.3672237912200016 0.0 0.05294655 2.9558174712065237 0.0020467786 0.055683464 3.1075221272152054 0.004093557 0.05842038 3.268965886866726 0.0020467786 0.051716298 2.8929170062920653 0.004093557 0.054453213 3.029154848759894 0.006140336 0.057190128 3.1754081073235088 0.0 0.02473231 2.138648866573983 0.0 0.020556964 2.092324627395541
I tried the image plot and lattice but unsuccessfully. Now I am reading about the sp package ( http://cran.r-project.org/src/contrib/Descriptions/sp.html ), but I mainly would like a piece of advice about what tools to use and how to read and plot these data (I suppose it must be common e.g. in geography to deal with this kind of problems). Kind Regards Lorenzo ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
