search for: trmat

I am modeling a trend surface using trmat and want to trim the resulting matrix to the area enclosed by my real data (i.e., remove all the extrapolated areas). I was using chull and in.chull to calculate the convex hull and change all the other values created by trmat to NA. However, my real data has portions that are slightly concave so...

...ivalent argument in contourplot() and wireframe()? I have taken the example 11-2 (pages 441-451) from Design and analysis of experiments (Montgomery 2001, 5th edition) to see if this could be done in R. I have managed to plot individual contours for each response after using the surf.ls() and trmat() functions from the Spatial package, but have been unable to overlay the contours. Ideally, it would be nice to also choose a different set of colours for shading the surface, so that when combing surfaces, we can immediately identify the optimum conditions. The final overlaid plot is shown...

R community: I have been creating code for plotting nomographs, or multiple, overlain contour plots of z-variables on a common x- and y- variable. My input has been a matrix with observed x, y, and multiple z variables; I then create a trend surface using trmat for each z-variable. So far so good. One application I have for these, requires shading a portion of the nomogram that meets criteria for some of the z-variables (i.e., z[1] must be between 20 and 30, z[2] must be less than 40, etc.). My solution was to use a logical comparison on each contour s...

...ibrary(foreach) identical(foreach:::defcombine, cbind) resulting in [1] FALSE Warning message: In identical(foreach:::defcombine, cbind) : ignoring non-pairlist attributes The warning is not related to the foreach package it seems. I get the same kind of warning with e.g. identical(spatial:::trmat, cbind) in a new R-session. Many other functions I have tried do, however, not result in the warning. The warning depends on the supposedly completely unrelated data frame operation. It seems also to be related to the fact that the data frame is empty and I extract a large number of columns out of...

...ial'' but turned up a fatal error in respect of the ``boot'' package. Here is some of what appeared on the screen: ===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+=== . . . trls.influence text html latex example trmat text html latex example variogram text html latex example ** building package indices ... * DONE (spatial) begin installing recommended package boot * Installing *source* package 'boot' ... mkdir: cannot create directory...

...l latex example rast.put text html latex example sites.get text html latex example sites.put text html latex example summary.grassmeta text html latex example trmat.G text html latex example utm.maas text html latex example DONE (GRASS) DONE (INSTALL) ------------------------------------------------------------------- -- __________________________________________________ Ulrich Leop...

...l latex example rast.put text html latex example sites.get text html latex example sites.put text html latex example summary.grassmeta text html latex example trmat.G text html latex example utm.maas text html latex example DONE (GRASS) ------------------------------------------------------------------ -- __________________________________________________ Ulrich Leopold MSc. Departme...