search for: coodinates

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)) >> >&gt...

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://ww...

Hi, I'm attempting to calculate the 0.25 and 0.97 quantiles for tree height (0-50 meters) against tree age (0-300 years) and I am running into some difficulty with the plotted grafic. I've run the examples in the quantreg help and can get those to work properly and by plugging in my data I can also get the lines plotted on my dataset. Unfortunately I'm running into a problem with the

Hey, Commenting a SoC application about improvement of Etheora, Conrad Parker said the development should focus first on the encoding features since liboggplay is overlapping with Etheora. I'm transcripting the here so the Etheora's priorities can be better discussed by everyone (and searchable on the web). _____ Conrad, you mean concentrating first on encoding part, or pehaps

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(