search for: hsv2rgb

I noted that there is a hsv2rgb in the C-API, but no corresponding function in R, while rgb2hsv is available in R. Does the functionality of hsv2rgb hide under some other name? Dieter

...t Math). RMath.h We probably need a separate set of declarations but maybe not. RGraphics.h This is big and is logically separate from other C code. Some things which are not in here should be -- e.g. hsv2rgb. (I think the rest of the code could also stand a bit of clean up too). Ross -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]s...

I tend to use table() quite a bit for quick "diagnostics", summary, etc. I have wished for a more automatic way of plotting these. One possibility would be something like the following function; The question is if (something like) the following is worth providing (and then maintaining...) at all : plot.table <- function(x, type = "h", ylim = c(0, max(x)), lwd = 2,

...else > after which (most of) graphapp/rgb.c wouldn't be needed anymore ? > -- or just declare the tables in Graphics.h and use them in > graphapp as well? > }} > > > Potential useful functions {from graphics.c} to be made > available on the R > level are > > hsv2rgb() (h,s,v) |-> (r,g,b) > > rgb2hsv() does *NOT* exist in graphics.c ; > is it possible at all (i.e. is hsv <--> rgb 1:1 ?)} > > rgb2col(rgb_ch) |-> uint { := unsigned int } > name2col (ch) |-> uint > number2col(ch) |-> uint > str2col (ch) |-> u...

...ary to the documentation. o Entry point rcont2 has been migrated to package stats and so is no longer available. o R_SVN_REVISION in Rversion.h is now an integer (rather than a string) and hence usable as e.g. #if R_SVN_REVISION < 70000. o The entry points rgb2hsv and hsv2rgb have been migrated to package grDevices and so are no longer available. o R_GE_version has been increased to 10 and name2col removed (use R_GE_str2col instead). R internal colour codes are now defined using the typedef rcolor. o The REPROTECT macro now checks that the p...

...ary to the documentation. o Entry point rcont2 has been migrated to package stats and so is no longer available. o R_SVN_REVISION in Rversion.h is now an integer (rather than a string) and hence usable as e.g. #if R_SVN_REVISION < 70000. o The entry points rgb2hsv and hsv2rgb have been migrated to package grDevices and so are no longer available. o R_GE_version has been increased to 10 and name2col removed (use R_GE_str2col instead). R internal colour codes are now defined using the typedef rcolor. o The REPROTECT macro now checks that the p...

...is a function pointer that provides access to character strings (such as the names vector) rather than assuming these are passed in. o R_CheckUserInterrupt is now described in `Writing R Extensions' and there is a new equivalent subroutine rchkusr for calling from FORTRAN code. o hsv2rgb and rgb2hsv are newly in the C API. o Salloc and Srealloc are provided in S.h as wrappers for S_alloc and S_realloc, since current S versions use these forms. o The type used for vector lengths is now R_len_t rather than int, to allow for a future change. o The internal header nmat...

...is a function pointer that provides access to character strings (such as the names vector) rather than assuming these are passed in. o R_CheckUserInterrupt is now described in `Writing R Extensions' and there is a new equivalent subroutine rchkusr for calling from FORTRAN code. o hsv2rgb and rgb2hsv are newly in the C API. o Salloc and Srealloc are provided in S.h as wrappers for S_alloc and S_realloc, since current S versions use these forms. o The type used for vector lengths is now R_len_t rather than int, to allow for a future change. o The internal header nmat...