Hi Marna

## Advertising

These are a few suggestions for EDA of your data Firstly check it – it is laborious work but it needs to be done – use a proper database if R is not suitable (memory,time) dat <- read.csv("G:/1/example_subsetdata.csv") dat <- subset(dat, !is.na(depth)) apply(dat,2,range,na.rm=T) table(cut(dat$depth, breaks = seq(496.5, 498.5, 0.25), include.lowest = TRUE, labels = F)) # needs more groups to even out numbers # use hand drafted breaks table(dat$Y) dat$ldepth <- cut(dat$depth, breaks = seq(496.5, 498.5, 0.25), include.lowest = TRUE, labels = F) xyplot(Y ~ X|factor(ldepth), subset(dat, Y > 400), pch = ".", as.table = TRUE) xyplot(flow ~ X|factor(ldepth), subset(dat, Y > 400), pch = ".", as.table = TRUE, col =1) xyplot(flow ~ Y|factor(ldepth), subset(dat, Y > 400), pch = ".", as.table = TRUE, col =1) I have made pch = ‘.’ so that points are not overtopping. increase by by units ie cex = 2 , cex =3 if you want to make them larger Have a look a lattice::par.settings and names(trellis.par.get()) these will make things easier if you you are using panel functions. I did not go further but the next step in this would be lattice 3d plots contourplot wireframe etc. You will get more information in working with the full dataset I have not really gone into spatials but you should look at the task view on spatial analysis. and the spatial SIG How you proceed will be partly determined by your future requirements of which I am not qualified. Regards Duncan From: Marna Wagley [mailto:marna.wag...@gmail.com] Sent: Friday, 14 October 2016 03:13 To: Duncan Mackay Subject: Re: [R] can we visualize water flows with 3d in R? Hi Duncan, Thank you very much for the message. Indeed I do have a very big data set with a grid size of 10cm * 10 cm. Every 10 cm*10cm grid has the value of X,Y, depth and flow measurement. I have attached a subset of the data. Thanks On Wed, Oct 12, 2016 at 11:05 PM, Duncan Mackay <dulca...@bigpond.com> wrote: Hi With a small data set 3D is not really an option; reduce the number of dimensions-- 2D conditional library(lattice) xyplot(flow ~ depth|factor(long), dat1, groups = lat, type = c("p","r"), pch = 16) I had started with lat and long reversed doing EDA gave the above ? latitude effect Regards Duncan Duncan Mackay Department of Agronomy and Soil Science University of New England Armidale NSW 2351 Email: home: mac...@northnet.com.au -----Original Message----- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Marna Wagley Sent: Wednesday, 12 October 2016 19:49 To: r-help mailing list Subject: [R] can we visualize water flows with 3d in R? Hi R Users, Is it possible to visualize river flow in 3D (latitude, longitude with respect to depth)? The example of my data looks like. Any suggestions? > dat1 long lat depth flow 1 1015.9 857 1.00 1.50 2 1015.9 857 1.25 1.23 3 1015.9 857 0.50 2.00 4 1015.9 858 0.10 1.95 5 1015.9 858 0.20 1.50 6 1025.0 858 0.30 1.20 7 1025.0 858 0.40 0.50 8 1025.0 858 0.35 0.70 9 1025.0 858 0.24 1.20 Thanks for your help. thanks [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.