search for: akima

Dear all. I am using the akima function to produce 3d contour plots using interp based on irregular data. using the eg in the akima manual library("akima") data(akima) plot(y ~ x, data = akima, main = "akima example data") with(akima, text(x, y, formatC(z,dig=2), adj = -0.1)) ## linear interpolation akima.l...

Hi, I'm currently hunting a bug in the akima library, especially in the code behind the interpp.old function (bi-variate linear interpolation). It is based on a triangulation algorithm, interpolation at a given point needs to know the triangle which contains this point, then the interpolation is a straightforward calculation based on the thre...

Dear All I hope that someone can help. I am working with sp pakage and akima library("akima") library(sp) imagine lots of different dataframes, of row = 100 columns = 3 of x and y coordinates with z values I will call these data frames for the sake of this example akima akima<-as.list(1:100) producing 100 dataframes dataframes of the form akima[[i]] I th...

Full_Name: Massimo santini Version: 1.0.1 OS: Linux Submission from: (NULL) (159.149.147.89) I've just dl the .rpm of R 1.0.1, installed it and then launched insatll.packages("akima") after re-launching R [--vanilla], the command library(akima) has the only effect to coredump the program. Here is the output of gdb and strace... --- GDB (commands given can be seen from the except) $ R -d gdb GNU gdb 19991004 Copyright 1998 Free Software Foundation, Inc. GDB is free s...

The akima package has a problematic license (it doesn't allow commercial use), so it's been recommended that people use the interp package instead. When I use interp::interp instead of akima::interp, I get reasonable output from your example. So that's another reason to drop akima... Duncan...

...s table > dput(mat) mat <- structure(c(2, 16, 9, 2, 16, 1, 1, 4, 7, 7, 44.52, 42.8, 43.54, 40.26, 40.09), dim = c(5L, 3L)) And I want to calculate result for contour or image plots as I did few years ago. However interp does not compute the z values and gives me zeros in z matrix. library(akima) > interp(mat[,1], mat[,2], mat[, 3], nx=5, ny=5) $x [1] 2.0 5.5 9.0 12.5 16.0 $y [1] 1.0 2.5 4.0 5.5 7.0 $z [,1] [,2] [,3] [,4] [,5] [1,] 0 0 0 0 0 [2,] 0 0 0 0 0 [3,] 0 0 0 0 0 [4,] 0 0 0 0 0 [5,] 0 0 0 0 0...

...nding (e.g. RColorBrewer) managed to get through the installation process. What happened between the versions 2.6.x and 2.7.x to impede the installation of add-on packages that previously went smooth? Thank you for your suggestions and best regards. Miha Example: > install.packages("akima",repos="http://cran.r-project.org",depend=T) * Installing to library '/usr/lib/R/library' * Installing *source* package 'akima' ... ** libs gfortran -m32 -fpic -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32...

...I set to make my default library location (for html links as well) /usr/lib/R/library and default R location /usr/lib/R? Are these two problems connected or the are not? I have even built the rpm from src.rpm myself but with no change. Below you may find the (error) output from installing the akima package. It might give a clue. Thanks for your help. Miha ----------------- > install.packages("akima",repos="http://cran.r-project.org",depend=T) Warning in install.packages("akima", repos = "http://cran.r-project.org", : argument 'lib' is m...

...ibs/acepack.so: undefined symbol: e_wsfe >library(tripack) Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library "/usr/lib/R/library/tripack/libs/tripack.so": /usr/lib/R/library/tripack/libs/tripack.so: undefined symbol: e_wsfe >library(akima) Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library "/usr/lib/R/library/akima/libs/akima.so": /usr/lib/R/library/akima/libs/akima.so: undefined symbol: e_wsfe -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-...

I am trying to load the GRASS library and am getting the following error: > library(GRASS) Loading required package: akima Error: package 'akima' could not be loaded In addition: Warning message: There is no package called 'akima' in: library(pkg, character.only = TRUE, logical = TRUE, lib.loc = lib.loc) This is on R 2.0.0, library(GRASS) is installed, and update.packages() has been run. Thanks Kir...

...ages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. > library(foreign) > library(mgcv) This is mgcv 1.3-19 > library(locfit) Loading required package: akima Error: package 'akima' could not be loaded In addition: Warning message: there is no package called 'akima' in: library(pkg, character.only = TRUE, logical = TRUE, lib.loc = lib.loc) > ------------------------------------------------------------------------------ This e-mail a...

I am using the Akima interpolation package to generate an interpolated color contour plot. It is working very well, except for one problem. The data that I have represents real-time readings from a thermistor string vs. time, so the data points are often very nearly in a rectangular array, since the thermistors a...

...is not found. The more difficult case has to do with the Author: field in the DESCRIPTION file (when no CITATION file is present) People can write whatever they want here, and the result looks sort of OK when printed by citation(), but confuses BibTeX mightly. One example: > citation("akima") To cite package ?akima? in publications use: Fortran code by H. Akima R port by Albrecht Gebhardt aspline function by Thomas Petzoldt <petzoldt at rcs.urz.tu-dresden.de> enhancements and corrections by Martin Maechler (2009). akima: Interpolation of irregularly spaced data. R package...

Hi, I am trying to install packages in R-2.2.1 on a Redhat WS4 system. I get the following error messages trying to install, for example, the akima package: > R.version.string [1] "R version 2.2.1, 2005-12-20" > install.packages("akima", lib="/usr/lib/R/library", repos = "http://cran.fhcrc.org/") . . . gcc -shared -L/usr/local/lib -o akima.so akima433.o akima697.o akima.new.o idbvip.o idcldp.o idg...

Full_Name: Jonathan Lees Version: 2.0.1 OS: linux-gnu Submission from: (NULL) (152.2.75.65) there is a problem with calculating the convex hull in 2-D interpolation using the codes interp fromt eh akima package: x =c(0.6505304, -1.1821562, -0.2600792, 0.7913716) y = c(1.0424226, 0.1754048, -1.4523334, 0.2349112) z = c(0.000, 3.042, 0.370, 0.122) EX = seq(from=min(x), to=max(x), length=100) WHY = seq(from=min(y), to=max(y), length=100) ZZ = interp(x=x, y=y, z=z, xo=EX, yo=WHY, extra...

I recently installed R 1.7.1 on Mac OS 10.2.6, and I now need to install the akima package. When I use install.packages(akima) or any variation of that command, I get the following message: Error: couldn't find function "install.packages" (I haven't had any problems with other commands so far, so I don't think there's a problem with the R installatio...

Hi, I am hired to translate into FORTRAN R functions. It works great and my customer is happy. I am going to translate a function that call aspline in the library AKIMA. This function call 2 FORTRAN routines that must be include (I guess) in the package AKIMA. And I have some questions. Is the fortran code really included in the R package AKIMA ? In other word, do I have a mean to call these 2 routines from a FORTRAN routine compiled in a DLL ? And if I can, am...

In a box running Mandrake 9 with R 1.6.2 I get problems when trying to install packages Matrix and Akima. It seems my gcc compiler and fortran do not talk to each other. Thanks in advance for any help, Gelu The errors are: * Installing *source* package 'Matrix' ... checking for gcc... gcc checking for C compiler default output... a.out checking whether the C compiler works... yes checking w...

Dear all; First of all, this is probably a more conceptual question than a R-related one, but still want to give it a try. When working with the interpolation function "interp" from the package akima and the triangulation function "tri.mesh" from package tripack I've got NA's for the interpolation and "error" for the triangulation. The data is arranged in a regular grid as opposed to what the help page for interp says but I think this is an interesting problem becaus...

...hall be determined by M$PR. Some words on my data first. Dataframe M looks like: head(M$Irradiance) [1] 293 350 412 419 477 509 head(M$AM) [1] 2.407 2.161 1.964 1.805 1.673 1.563 head(M$PR) [1] 70.102 72.600 75.097 80.167 79.644 82.633 To create a grid, I used "interp" from the "akima" package up until now. As mentioned in the header, I run into problems when trying the following: grid <- akima::interp(M$AM,M$Irradiance,M$PR, duplicate="mean"); Error in interp.old(x, y, z, xo = xo, yo = yo, ncp = 0, extrap = extrap, : scales of x and y are too dissimilar M...