[Rcpp-devel] R Session Sometimes Aborts
Alex Ilich
alexilich93 at gmail.com
Wed Dec 15 18:25:54 CET 2021
Thanks, I thought I was onto something there but I guess that wasn't the
issue (that only came up because when I made edits to my function to just
return the actual values as a check, I was converting them in an unsafe way
from int to double). I'm still confused on how the valgrind check Bill was
running was finding that focal_val was evaluating to 16 leading to an out
of bounds error in some cases when the data is constrained to 0-15
(n_levels-1). Additionally if I set out[i] = max(curr_window); and make out
an IntegerVector (so that the NA's aren't converted), the maximum value of
the resulting surface is 15. focal_val is directly drawn from curr_window
so I don't see how it could be 16. If anyone has any thoughts or ideas on
this it would be greatly appreciated.
Thanks,
Alex
C++ functions:
https://github.com/ailich/GLCMTextures/blob/terra/src/glcm_cpp_functions.cpp
R function that calls C++ functions:
https://github.com/ailich/GLCMTextures/blob/terra/R/glcm_textures2.R
On Wed, Dec 15, 2021 at 11:49 AM Dirk Eddelbuettel <edd at debian.org> wrote:
>
> On 15 December 2021 at 11:22, Alex Ilich wrote:
> | I actually think that the issue may be related to conversions between
> | int/IntegerVectors and double/NumericVector/std::vector<double>. I was
> | talking with the terra package author to see if the focalCpp function can
> | take an IntegerVector instead of a NumericVector/ /std::vector<double>,
> as
> | it seemed initially to be working and he said that Rcpp automatically
> | coerces a std::vector<double> to an Rcpp::IntegerVector. However, when I
>
> That is a misunderstanding. That would be a *major* bug. Brining Rob in
> just
> in case.
>
> Rcpp faithfully and reliably maps back and forth between
>
> std::vector<int32_t> and Rcpp::IntegerVector
> std::vector<double> and Rcpp::NumericVector
>
> as well as other numerics and of course std::string etc
>
> What you may be confusing is that writing something such as
>
> > Rcpp::cppFunction("int mysum(IntegerVector x) { return sum(x); }")
> > mysum(c(1.0, 2.0, 3.0))
> [1] 6
> > Rcpp::cppFunction("double myothersum(NumericVector x) { return
> sum(x); }")
> > myothersum(1:3) # the : creates an _int_ sequence
> [1] 6
> > myothersum(c(1L,2L,3L))
> [1] 6
> >
>
> cast up/down from/to int and double _when access from R_ which is a _very_
> different story.
>
>
> | replace the call to C_make_glcm which was causing the issue to just
> | out(i,0) = xw[0] (i.e. return the first value), the edges that should be
> NA
> | evaluate to -2147483648 so maybe this automatic conversion doesn't work
> if
> | there are NAs. I can reproduce this using only Rcpp by having a function
> | that takes an IntegerVector and returns the first value of that vector
> as a
> | double, in which case NA's are changed to -2147483648 (code below). Is
> this
> | expected behavior, and are there any ways to guard against this?
>
> It's a bug in your code as you don't cast right. And you also 'call it
> incorrectly' just as per my example above. NA is a _double_ as is 1. We
> then
> help you by making the _now int_ value a matching NA _as an int_.
>
> And here is a *very* important bit: Int NAs are an R-only thing. The
> assignment you make is a C/C++ one *which does not know this* and you loose
> NAness.
>
> No more, no less. Just a usage bug on your end.
>
> | library(Rcpp)
> | cppFunction('double C_fun2(IntegerVector x){
> | size_t start = 0;
> | size_t end = x.length()-1;
> | IntegerVector xw = x[Rcpp::Range(start,end)]; //Current window of
> | elevation values
> | double out=xw[0];
> | return(out);
> | }')
> |
> | C_fun2(c(NA,1))
> | # -2147483648
>
> Simpler fixed version:
>
>
> > Rcpp::cppFunction("double alex(IntegerVector x) { NumericVector
> y(x); return y[0];}")
> > alex(c(NA, 1))
> [1] NA
> > alex(c(NA_integer_, 1L)) # "correct" call with actual int arguments
> [1] NA
> >
>
> This ensure we build a proper R-context aware vector of doubles and then
> return its first element. You can use the same logic in your code, we also
> do this (I think) when using std::vector<> of these base types as they are
> so
> common.
>
> Dirk
>
> | On Mon, Dec 13, 2021 at 3:43 PM Alex Ilich <alexilich93 at gmail.com>
> wrote:
> |
> | > Thanks for digging into this for me. If focal_val is 16, then this is
> an
> | > out of bounds error as the matrix is 16x16 and the maximum index can
> be 15.
> | > What I'm confused about is that focal_val comes from the data which has
> | > been transformed to be restricted to integers in the range of 0-15 (0 -
> | > n_levels-1). This is explicitly checked for in the glcm_textures2
> function
> | > with the line " if((terra::global(r, fun = max) > (n_levels-1)) |
> | > (terra::global(r, fun = min) < 0)){stop("Error: raster must have values
> | > between 0 and n_levels-1")}". Additionally, if I start with numbers in
> 0-15
> | > and don't do any transformation (quantization="none"), I still run into
> | > this issue (see code below).
> | >
> | > Thanks,
> | > Alex
> | >
> | > library(terra)
> | > library(raster)
> | > library(GLCMTextures)
> | >
> | > r1b<- terra::rast(volcano)
> | > set.seed(5)
> | > values(r1b)<- sample(0:15, size = ncell(r1b), replace = TRUE) # Replace
> | > values with random integers from 0-15
> | > r2b<- glcm_textures2(r1b, w=c(3,7), n_levels = 16, quantization =
> "none",
> | > shift=c(0,1)) #Often leads to Rsession Aborted
> | >
> | > On Mon, Dec 13, 2021 at 3:12 PM Bill Dunlap <williamwdunlap at gmail.com>
> | > wrote:
> | >
> | >> In this example vgdb shows that valgrind's first complaint is at
> | >> (gdb) where 5
> | >> #0 0x000000001c1ada01 in C_make_glcm (x=..., n_levels=16, shift=...,
> | >> na_opt=...) at glcm_cpp_functions.cpp:73
> | >> #1 0x000000001c1b2238 in C_glcm_textures_helper2 (x=..., w2=...,
> | >> n_levels=16, shift=..., na_opt=..., ni=1, nw=21)
> | >> at glcm_cpp_functions.cpp:218
> | >> #2 0x000000001c1a098e in _GLCMTextures_C_glcm_textures_helper2
> | >> (xSEXP=0x19023168, w2SEXP=0x92cbde8,
> | >> n_levelsSEXP=0xa3138d8, shiftSEXP=0x92cc468, na_optSEXP=0xa313398,
> | >> niSEXP=0xb655560, nwSEXP=0x1aeec7d0)
> | >> at RcppExports.cpp:94
> | >> #3 0x00000000001f6b02 in R_doDotCall (
> | >> ofun=0x1c1a0732 <_GLCMTextures_C_glcm_textures_helper2(SEXP, SEXP,
> | >> SEXP, SEXP, SEXP, SEXP, SEXP)>, nargs=7,
> | >> cargs=0x1ffeff6830, call=0x15ed3c88) at
> | >> /mnt/c/R/R-svn/trunk/src/main/dotcode.c:622
> | >> #4 0x00000000002637ca in bcEval (body=0x15ed4078, rho=0x19023210,
> | >> useCache=TRUE)
> | >> at /mnt/c/R/R-svn/trunk/src/main/eval.c:7695
> | >>
> | >> Line 73 is
> | >> GLCM(neighbor_val,focal_val) = GLCM(neighbor_val,focal_val)+1;
> | >> where GLCM is a 16 x 16 IntegerMatrix and focal_val is 16:
> | >> (gdb) print neighbor_val
> | >> $1 = 9
> | >> (gdb) print focal_val
> | >> $2 = 16
> | >> (gdb) print i
> | >> $3 = 2
> | >> (gdb) print j
> | >> $4 = 1
> | >>
> | >> -Bill
> | >>
> | >> On Mon, Dec 13, 2021 at 11:37 AM Bill Dunlap <
> williamwdunlap at gmail.com>
> | >> wrote:
> | >>
> | >>> Thanks, I hadn't noticed the --use-valgrind option to check.
> | >>>
> | >>> I often run R under valgrind with the command line:
> | >>> $ R --quiet --no-save --debugger=valgrind
> | >>> --debugger-args="--track-origins=yes --vgdb=full --vgdb-error=0"
> | >>> then in another window start a debugger process with
> | >>> $ gdb RHOME/bin/exec/R
> | >>> ...
> | >>> (gdb) target remote | vgdb
> | >>> (gdb) cont
> | >>> You may need to supply a complete path to vgdb, valgrind's interface
> to
> | >>> gdb.
> | >>> Then gdb will set breakpoints where valgrind reports memory misuse
> and
> | >>> you can inspect variables, etc., where an error occurs.
> | >>> You can check for memory leaks from gdb with
> | >>> (gdb) monitor leak_check full
> | >>>
> | >>> -Bill
> | >>>
> | >>>
> | >>> On Mon, Dec 13, 2021 at 10:29 AM Dirk Eddelbuettel <edd at debian.org>
> | >>> wrote:
> | >>>
> | >>>>
> | >>>> On 13 December 2021 at 09:15, Bill Dunlap wrote:
> | >>>> | I ran your example under valgrind on Linux (Ubuntu 20.04)
> | >>>>
> | >>>> Excellent call, as usual! Thanks for doing that.
> | >>>>
> | >>>> R actually makes is so easy to run with valgrind by calling
> | >>>>
> | >>>> R CMD check --use-valgrind somePkg_1.2-3.tar.gz
> | >>>>
> | >>>> that I started to add it to some CI setups.
> | >>>>
> | >>>> Dirk
> | >>>>
> | >>>> | and valgrind found some memory misuse:
> | >>>> |
> | >>>> | $ R --quiet --no-save --debugger=valgrind
> | >>>> | --debugger-args="--track-origins=yes"
> | >>>> | ==1533== Memcheck, a memory error detector
> | >>>> | ==1533== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward
> et
> | >>>> al.
> | >>>> | ==1533== Using Valgrind-3.15.0 and LibVEX; rerun with -h for
> | >>>> copyright info
> | >>>> | ==1533== Command: /home/bill/R-devel/R-build/bin/exec/R --quiet
> | >>>> --no-save
> | >>>> | ==1533==
> | >>>> | > library(terra)
> | >>>> | terra version 1.5.2
> | >>>> | > library(raster)
> | >>>> | Loading required package: sp
> | >>>> | > library(GLCMTextures)
> | >>>> | >
> | >>>> | > r1a<- raster::raster(volcano)
> | >>>> | > r2a<- glcm_textures(r1a, w=c(3,7), n_levels = 16, quantization =
> | >>>> "equal
> | >>>> | prob", shift=c(0,1))
> | >>>> | >
> | >>>> | > r1b<- terra::rast(volcano)
> | >>>> | > r2b<- glcm_textures2(r1b, w=c(3,7), n_levels = 16, quantization
> =
> | >>>> "equal
> | >>>> | prob", shift=c(0,1)) #Often leads to Rsession Aborted
> | >>>> | ==1533== Invalid read of size 4
> | >>>> | ==1533== at 0x1C1ADA01: C_make_glcm(Rcpp::Matrix<13,
> | >>>> | Rcpp::PreserveStorage>, int, Rcpp::Vector<13,
> Rcpp::PreserveStorage>,
> | >>>> | Rcpp::String) (glcm_cpp_functions.cpp:73)
> | >>>> | ==1533== by 0x1C1B2237:
> C_glcm_textures_helper2(Rcpp::Vector<13,
> | >>>> | Rcpp::PreserveStorage>, Rcpp::Vector<13, Rcpp::PreserveStorage>,
> int,
> | >>>> | Rcpp::Vector<13, Rcpp::PreserveStorage>, Rcpp::String, unsigned
> long,
> | >>>> | unsigned long) (glcm_cpp_functions.cpp:218)
> | >>>> | ==1533== by 0x1C1A098D: _GLCMTextures_C_glcm_textures_helper2
> | >>>> | (RcppExports.cpp:94)
> | >>>> | ==1533== by 0x1F6B01: R_doDotCall (dotcode.c:622)
> | >>>> | ==1533== by 0x2637C9: bcEval (eval.c:7695)
> | >>>> | ==1533== by 0x240653: Rf_eval (eval.c:748)
> | >>>> | ==1533== by 0x243223: R_execClosure (eval.c:1918)
> | >>>> | ==1533== by 0x242EFD: Rf_applyClosure (eval.c:1844)
> | >>>> | ==1533== by 0x240E06: Rf_eval (eval.c:871)
> | >>>> | ==1533== by 0x246CD6: do_set (eval.c:2990)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x2457DA: do_begin (eval.c:2538)
> | >>>> | ==1533== Address 0xa59c0c4 is 28 bytes before a block of size 64
> in
> | >>>> arena
> | >>>> | "client"
> | >>>> | ==1533==
> | >>>> | ==1533== Invalid write of size 4
> | >>>> | ==1533== at 0x1C1ADA44: C_make_glcm(Rcpp::Matrix<13,
> | >>>> | Rcpp::PreserveStorage>, int, Rcpp::Vector<13,
> Rcpp::PreserveStorage>,
> | >>>> | Rcpp::String) (glcm_cpp_functions.cpp:73)
> | >>>> | ==1533== by 0x1C1B2237:
> C_glcm_textures_helper2(Rcpp::Vector<13,
> | >>>> | Rcpp::PreserveStorage>, Rcpp::Vector<13, Rcpp::PreserveStorage>,
> int,
> | >>>> | Rcpp::Vector<13, Rcpp::PreserveStorage>, Rcpp::String, unsigned
> long,
> | >>>> | unsigned long) (glcm_cpp_functions.cpp:218)
> | >>>> | ==1533== by 0x1C1A098D: _GLCMTextures_C_glcm_textures_helper2
> | >>>> | (RcppExports.cpp:94)
> | >>>> | ==1533== by 0x1F6B01: R_doDotCall (dotcode.c:622)
> | >>>> | ==1533== by 0x2637C9: bcEval (eval.c:7695)
> | >>>> | ==1533== by 0x240653: Rf_eval (eval.c:748)
> | >>>> | ==1533== by 0x243223: R_execClosure (eval.c:1918)
> | >>>> | ==1533== by 0x242EFD: Rf_applyClosure (eval.c:1844)
> | >>>> | ==1533== by 0x240E06: Rf_eval (eval.c:871)
> | >>>> | ==1533== by 0x246CD6: do_set (eval.c:2990)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x2457DA: do_begin (eval.c:2538)
> | >>>> | ==1533== Address 0xa59c0c4 is 28 bytes before a block of size 64
> in
> | >>>> arena
> | >>>> | "client"
> | >>>> | ==1533==
> | >>>> | --1533-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11
> | >>>> (SIGSEGV) -
> | >>>> | exiting
> | >>>> | --1533-- si_code=1; Faulting address: 0x10A59C138; sp:
> 0x10090e2e20
> | >>>> |
> | >>>> | valgrind: the 'impossible' happened:
> | >>>> | Killed by fatal signal
> | >>>> |
> | >>>> | host stacktrace:
> | >>>> | ==1533== at 0x580505C4: ??? (in
> | >>>> | /usr/lib/x86_64-linux-gnu/valgrind/memcheck-amd64-linux)
> | >>>> | ==1533== by 0x58004EBB: ??? (in
> | >>>> | /usr/lib/x86_64-linux-gnu/valgrind/memcheck-amd64-linux)
> | >>>> | ==1533== by 0x58005DA7: ??? (in
> | >>>> | /usr/lib/x86_64-linux-gnu/valgrind/memcheck-amd64-linux)
> | >>>> | ==1533== by 0x580A7204: ??? (in
> | >>>> | /usr/lib/x86_64-linux-gnu/valgrind/memcheck-amd64-linux)
> | >>>> | ==1533== by 0x580F5FD4: ??? (in
> | >>>> | /usr/lib/x86_64-linux-gnu/valgrind/memcheck-amd64-linux)
> | >>>> |
> | >>>> | sched status:
> | >>>> | running_tid=1
> | >>>> |
> | >>>> | Thread 1: status = VgTs_Runnable (lwpid 1533)
> | >>>> | ==1533== at 0x483BE63: operator new(unsigned long) (in
> | >>>> |
> /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
> | >>>> | ==1533== by 0x6E92D3C: void std::__cxx11::basic_string<char,
> | >>>> | std::char_traits<char>, std::allocator<char> >::_M_construct<char
> | >>>> | const*>(char const*, char const*, std::forward_iterator_tag) (in
> | >>>> | /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
> | >>>> | ==1533== by 0x1C1B2377:
> C_glcm_textures_helper2(Rcpp::Vector<13,
> | >>>> | Rcpp::PreserveStorage>, Rcpp::Vector<13, Rcpp::PreserveStorage>,
> int,
> | >>>> | Rcpp::Vector<13, Rcpp::PreserveStorage>, Rcpp::String, unsigned
> long,
> | >>>> | unsigned long) (glcm_cpp_functions.cpp:221)
> | >>>> | ==1533== by 0x1C1A098D: _GLCMTextures_C_glcm_textures_helper2
> | >>>> | (RcppExports.cpp:94)
> | >>>> | ==1533== by 0x1F6B01: R_doDotCall (dotcode.c:622)
> | >>>> | ==1533== by 0x2637C9: bcEval (eval.c:7695)
> | >>>> | ==1533== by 0x240653: Rf_eval (eval.c:748)
> | >>>> | ==1533== by 0x243223: R_execClosure (eval.c:1918)
> | >>>> | ==1533== by 0x242EFD: Rf_applyClosure (eval.c:1844)
> | >>>> | ==1533== by 0x240E06: Rf_eval (eval.c:871)
> | >>>> | ==1533== by 0x246CD6: do_set (eval.c:2990)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x2457DA: do_begin (eval.c:2538)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x244FC9: do_for (eval.c:2420)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x2457DA: do_begin (eval.c:2538)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x244FC9: do_for (eval.c:2420)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x2457DA: do_begin (eval.c:2538)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x243223: R_execClosure (eval.c:1918)
> | >>>> | ==1533== by 0x242EFD: Rf_applyClosure (eval.c:1844)
> | >>>> | ==1533== by 0x253F32: bcEval (eval.c:7107)
> | >>>> | ==1533== by 0x240653: Rf_eval (eval.c:748)
> | >>>> | ==1533== by 0x243223: R_execClosure (eval.c:1918)
> | >>>> | ==1533== by 0x243D9C: R_execMethod (eval.c:2094)
> | >>>> | ==1533== by 0x8800187: R_dispatchGeneric
> | >>>> (methods_list_dispatch.c:1145)
> | >>>> | ==1533== by 0x2B15F4: do_standardGeneric (objects.c:1285)
> | >>>> | ==1533== by 0x253DB3: bcEval (eval.c:7096)
> | >>>> | ==1533== by 0x240653: Rf_eval (eval.c:748)
> | >>>> | ==1533== by 0x243223: R_execClosure (eval.c:1918)
> | >>>> | ==1533== by 0x242EFD: Rf_applyClosure (eval.c:1844)
> | >>>> | ==1533== by 0x253F32: bcEval (eval.c:7107)
> | >>>> | ==1533== by 0x240653: Rf_eval (eval.c:748)
> | >>>> | ==1533== by 0x243223: R_execClosure (eval.c:1918)
> | >>>> | ==1533== by 0x242EFD: Rf_applyClosure (eval.c:1844)
> | >>>> | ==1533== by 0x240E06: Rf_eval (eval.c:871)
> | >>>> | ==1533== by 0x246CD6: do_set (eval.c:2990)
> | >>>> | ==1533== by 0x240A8C: Rf_eval (eval.c:823)
> | >>>> | ==1533== by 0x28EF5E: Rf_ReplIteration (main.c:264)
> | >>>> | ==1533== by 0x28F157: R_ReplConsole (main.c:316)
> | >>>> | ==1533== by 0x290BC0: run_Rmainloop (main.c:1130)
> | >>>> | ==1533== by 0x290BDA: Rf_mainloop (main.c:1137)
> | >>>> | ==1533== by 0x16F74B: main (Rmain.c:29)
> | >>>> | client stack range: [0x1FFEED3000 0x1FFF000FFF] client SP:
> | >>>> 0x1FFEFF35F0
> | >>>> | valgrind stack range: [0x1008FE3000 0x10090E2FFF] top usage:
> 12336 of
> | >>>> | 1048576
> | >>>> |
> | >>>> |
> | >>>> | Note: see also the FAQ in the source distribution.
> | >>>> | It contains workarounds to several common problems.
> | >>>> | In particular, if Valgrind aborted or crashed after
> | >>>> | identifying problems in your program, there's a good chance
> | >>>> | that fixing those problems will prevent Valgrind aborting or
> | >>>> | crashing, especially if it happened in m_mallocfree.c.
> | >>>> |
> | >>>> | If that doesn't help, please report this bug to: www.valgrind.org
> | >>>> |
> | >>>> | In the bug report, send all the above text, the valgrind
> | >>>> | version, and what OS and version you are using. Thanks.
> | >>>> |
> | >>>> | On Mon, Dec 13, 2021 at 8:15 AM Alexander Ilich <
> ailich at mail.usf.edu>
> | >>>> wrote:
> | >>>> |
> | >>>> | > Hi, I'm upgrading one of my R packages to rely on the terra
> package
> | >>>> | > instead of the raster package for the handling of spatial raster
> | >>>> data.
> | >>>> | > Previously when relying on the raster package I had to convert
> the
> | >>>> data to
> | >>>> | > a matrix and send it to C++ to loop through the cells manually,
> but
> | >>>> with
> | >>>> | > the new features in the terra package I can supply a C++
> function
> | >>>> that
> | >>>> | > returns multiple values directly to terra::focalCpp to perform
> focal
> | >>>> | > operations
> | >>>> | > <
> | >>>>
> https://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/how-focal-statistics-works.htm
> | >>>> >.
> | >>>> | > I get the same values using both the old and new versions of the
> | >>>> functions,
> | >>>> | > but the new version often causes the R session to abort,
> especially
> | >>>> at
> | >>>> | > larger window sizes. For example, a 3x3 or a 3x5 window seems to
> | >>>> always
> | >>>> | > run, but a 3x7 window will often cause the R session to abort.
> | >>>> However,
> | >>>> | > when it doesn't, I get the correct values. Functions followed
> by 2
> | >>>> are the
> | >>>> | > terra versions of the function. By commenting out things and
> | >>>> rebuilding I
> | >>>> | > was able to determine the line that causes the crash in the
> terra
> | >>>> version
> | >>>> | > is "NumericMatrix curr_GLCM = C_make_glcm(curr_window, n_levels,
> | >>>> shift,
> | >>>> | > na_opt); //Tabulate the GLCM"; however, this line is also
> included
> | >>>> in the
> | >>>> | > raster version of the function so I'm not sure why this would
> | >>>> happen. Any
> | >>>> | > help would be greatly appreciated. Here is the github repository
> | >>>> | > <https://github.com/ailich/GLCMTextures/tree/terra>, and I've
> | >>>> added some
> | >>>> | > sample code below to illustrate the issue.
> | >>>> | >
> | >>>> | > Thanks,
> | >>>> | > Alex
> | >>>> | >
> | >>>> | > install.packages('raster', repos='
> https://rspatial.r-universe.dev')
> | >>>> | > #install development version of raster
> | >>>> | > install.packages('terra', repos='
> https://rspatial.r-universe.dev')
> | >>>> | > #install development version of terra
> | >>>> | >
> | >>>> | > remotes::install_github("ailich/GLCMTextures", ref = "terra")
> | >>>> #Install
> | >>>> | > branch of my package testing terra versions of functions
> | >>>> | >
> | >>>> | > library(terra)
> | >>>> | > library(raster)
> | >>>> | > library(GLCMTextures)
> | >>>> | >
> | >>>> | > r1a<- raster::raster(volcano)
> | >>>> | > r2a<- glcm_textures(r1a, w=c(3,7), n_levels = 16, quantization =
> | >>>> "equal
> | >>>> | > prob", shift=c(0,1))
> | >>>> | >
> | >>>> | > r1b<- terra::rast(volcano)
> | >>>> | > r2b<- glcm_textures2(r1b, w=c(3,7), n_levels = 16, quantization
> =
> | >>>> "equal
> | >>>> | > prob", shift=c(0,1)) #Often leads to Rsession Aborted
> | >>>> | >
> | >>>> | > all.equal(values(r2a),values(r2b)) #TRUE
> | >>>> | >
> | >>>> | >
> | >>>> | >
> | >>>> | > #System Information
> | >>>> | > #OS: Windows 10
> | >>>> | > R.version
> | >>>> | > # platform x86_64-w64-mingw32
> | >>>> | > # arch x86_64
> | >>>> | > # os mingw32
> | >>>> | > # system x86_64, mingw32
> | >>>> | > # status
> | >>>> | > # major 4
> | >>>> | > # minor 0.4
> | >>>> | > # year 2021
> | >>>> | > # month 02
> | >>>> | > # day 15
> | >>>> | > # svn rev 80002
> | >>>> | > # language R
> | >>>> | > # version.string R version 4.0.4 (2021-02-15)
> | >>>> | > # nickname Lost Library Book
> | >>>> | >
> | >>>> | > packageVersion("terra")
> | >>>> | > # ‘1.5.2’
> | >>>> | > packageVersion("raster")
> | >>>> | > # ‘3.5.10’
> | >>>> | > packageVersion("Rcpp")
> | >>>> | > # ‘1.0.7’
> | >>>> | > packageVersion("RcppArmadillo")
> | >>>> | > # ‘0.10.7.3.0’
> | >>>> | > _______________________________________________
> | >>>> | > Rcpp-devel mailing list
> | >>>> | > Rcpp-devel at lists.r-forge.r-project.org
> | >>>> | >
> | >>>>
> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> | >>>> | _______________________________________________
> | >>>> | Rcpp-devel mailing list
> | >>>> | Rcpp-devel at lists.r-forge.r-project.org
> | >>>> |
> | >>>>
> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> | >>>> --
> | >>>> https://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
> | >>>>
> | >>> _______________________________________________
> | >> Rcpp-devel mailing list
> | >> Rcpp-devel at lists.r-forge.r-project.org
> | >>
> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> | >
> | >
>
> --
> https://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
>
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