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Hi all, I wish to implement various landscape ecology measures through R, such as: box counting dimension; twist number statistics; contagion and lacuniarity indices; angular second moment; adjacency measures; dominance indices; etc ... Some of the measures can be applied to...

Hi all, The suggestions were great. However, after installing readline-devel I had to install ncurses-devel before getting sm to work. Can this be put into the RH 7.3 Readme when downloading R rpms (and other distbns like...

Hi all, I get two different results when using sum() and the switch na.rm. The result is correct when na.rm=FALSE. Linux Redhat 7.3, R version 1.6.1. I've had no luck searching the mail...

Hi Bryn, You just need to use the na.rm=T option (look under help for the mean function) e.g. > x<-c(1,4,6,NA,10,18) # data > mean(x) [1] NA > mean(x,na.rm=T) [1...

Okay, This is one of the cases where I can answer my own foolishness. If I don't define the switch as na.rm=TRUE, but instead just as TRUE - which is my usual practice with other functions - then sum...

Hi Manuel and Robert, My understanding is that the fdim library is orientated towards vector data filling a space, as opposed to a raster type image. Importantly, I utilise the GRASS library interface with the GRASS GIS to import raster...

Hi, I had a segmentation fault similar to the way you described, but between R 1.5.1 and R 1.6.1 on RH 7.3. All I had to do was to change the value of the environmental...

Hi Dieter, The "sm" (smoothing methods library) of Bowman and Azzalini (Bowman, AW & Azzalini A (1997) Applied Smoothing Techniques for Data Analysis: The Kernel Approach with S-Plus Illustrations, Clarendon Press, Oxford). Check out pages 9 and 10 (Figure 1...

Dear All, This is a question to sound out possibilities. I am with the Faculty of Natural and Agricultural Sciences at the University of Western Australia, representing a few of the more statistically minded in the faculty. Essentially, there have...

Hi Suzanne, It sounds like you are dealing with an Inhomogeneous Poisson Point Process (the simplest). The intensity function lambda(mu) of this process is the density of points near mu. i.e. the process is poisson locally, and the...

Hi Vladimir, Cheap and nasty says add lines, but first define where you want to put your insets explicitly by specifying x,y for the subplots. modified code below (you will want to move your xy values around slightly to...

Dear All, Thankyou for your responses. Graham Lawrence, John Fox and Peter Dalgaard have thus far said most cogently what I really had in mind. I'll demonstrate this by clarifying the points that have arisen in the discussion so...

Hi Vladimir, you will need to know the map coordinates of the corners of your AOI within the image; and then also the map coordinates of your inset (on the scale of the first map). Then simply use 'lines' to...

Hi All, I am having trouble installing the sm package, and only the sm package. My box is RedHat 7.3 on a PIV. Readline 4.3-3 is installed (suited for RH 8, but same error under readline 4...