I have an R program I am attempting to use to generate some SVGs. I've been
using the cairoDevice library. When running a session not connected to an X
session (like if I'm sshed in), attempting "library(cairoDevice)" causes:
*** caught segfault ***
address 0x8, cause 'memory not mapped'
Traceback:
1: .C("R_gtk_setEventHandler", PACKAGE = "cairoDevice")
2: firstlib(which.lib.loc, package)
3: doTryCatch(return(expr), name, parentenv, handler)
4: tryCatchOne(expr, names, parentenv, handlers[[1]])
5: tryCatchList(expr, classes, parentenv, handlers)
6: tryCatch(expr, error = function(e) { call <- conditionCall(e) if
(!is.null(call)) { if (identical(call[[1]],
quote(doTryCatch))) call <- sys.call(-4) dcall <-
deparse(call)[1] prefix <- paste("Error in", dcall, ": ")
LONGCALL <- 30 if (nchar(dcall) > LONGCALL) prefix <-
paste(prefix, "\n\t", sep = "") } else prefix <- "Error : " msg <-
paste(prefix, conditionMessage(e), "\n", sep = "")
.Internal(seterrmessage(msg[1])) if (!silent && identical(getOption("
show.error.messages"), TRUE)) { cat(msg, file =
stderr()) .Internal(printDeferredWarnings()) }
invisible(structure(msg, class = "try-error"))})
7: try(firstlib(which.lib.loc, package))
8: library(cairoDevice)
aborting ...
Segmentation fault (core dumped)
I'm fine with the idea that Cairo somehow needs the X server to do its
business. I would like to not have the program segfault however and instead
just skip the SVG if it can't load the library. I've been hunting to see how
to do error handling in R and I'm not really finding a good resource. Can
anyone suggest one?
Will
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