search for: coodinate

The arr.ind in the which function does the job very nicely!!! Thank you everyone for the suggestions! Ana > > >---- Mensaje Original ---- >De: marc_schwartz at comcast.net >Para: m_olshansky at yahoo.com >Asunto: Re: [BioC] [R] function to find coodinates in an array >Fecha: Thu, 16 Aug 2007 21:53:44 -0500 > >>If I am correctly understanding the problem, I think that this is >what >>you want: >> >>set.seed(1) >> >># Create a 3x3x3 array >>ARR <- array(sample(100, 27), c(3, 3, 3)) >> >&g...

Dear list, I am looking for a function/way to get the array coordinates of given elements in an array. What I mean is the following: - Let X be a 3D array - I find the ordering of the elements of X by ord <- order(X) (this returns me a vector) - I now want to find the x,y,z coordinates of each element of ord Can anyone help me? Thanks! Ana

...data(soils) str(soils) #------------------------------------------------------------------------------------------ # creating a ternary plot triax.plot(soils[1:10,], main="DEFAULT") #------------------------------------------------------------------------------------------ # extracting coodinates by mouse click on the plot (cartesian coordinates, x and y axis) id <- locator(n=2) # click on the plot to extract 2 coodinates #------------------------------------------------------------------------------------------ # draw an arrow with the coordinates extracted arrows(id$x[1], id$y[1],...

Dear all, sorry if it's obvious but I wasn't able to find a solution by myself. I have a text file filled with 3 colums representing xyz coodinates (i.e. positions) of an objects. Can I have in R a 3d plot representig my object' s positions? I guess that I can but I don't know how. Any help is much appreciated Thanks a lot -a- Andrea Valle DAMS - Facolt?? di Scienze della Formazione Universit?? degli Studi di Torino http://w...

...lem. Curves similar to mine look like these site index curves: http://www.extension.umn.edu/distribution/naturalresources/components/3473-13.html In the example from the nlrq help the lines of the median and the various quantiles all start from the same location, tha is basically (x=0, y=0) in the coodinate plane.  With my problem, the lines start to be drawn from various different positions ( the lines always start at age(x)=0, but the height(y) can range between 0 and 15). Additionally, the data set is quite large. with about 50,000 oberservations on age and height. Does anyone have a suggestion on...

...t maybe the liboggplay is going to have more features added) and that they adopt some different programming philophies (e.g., At first I wanted to ask from the user a callback function for setting and reading data in the frame, I droppep in favour of providing a matrix where user could read the i,j coodinate transparently in the colorspace s/he wanted) what may difficult a merge. However, I think there could be advocates of a merge, and I consider the possibily of I myself to become one of them; so I'm changing the schedule to focus on encoding features first. But I'd like to hear from you (a...

In converting some older code: ## builds an OWIN to generate a set of points on a grid within the OWIN object: bdry <- read.shape( "../../data/boundary.shp" ) outline.verts <- bdry$Shapes[[2]]$verts[1:bdry$Shapes[[2]]$Pstart[2],] outline.order <- nrow( outline.verts ) : 2 bdry.poly <- vector( 2, mode="list" ) bdry.poly[[1]] <- list(