Displaying 2 results from an estimated 2 matches for "l_convert".
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2011 Oct 25
1
R fails when converting units using Hershey-Fonts
...ort(viewport(gp=gpar(fontfamily="HersheySerif")))
> convertHeight(stringHeight(label), unitTo="mm")
*** caught segfault ***
address 0xadc838f8, cause 'memory not mapped'
Traceback:
1: .Call(fnname, ..., PACKAGE = "grid")
2: grid.Call("L_convert", x, as.integer(whatfrom), as.integer(whatto), valid.units(unitTo))
3: convertUnit(x, unitTo, "y", "dimension", "y", "dimension", valueOnly = valueOnly)
4: convertHeight(stringHeight(label), unitTo = "mm")
Possible actions:
1: abort (wit...
2009 Sep 24
1
unexpected behavior of `[<-` method for class unit.arithmetic
Dear list,
Consider the following,
library(grid)
w = unit.c(unit(1, "in"), unit(2, "in"))
w2 = w + unit(1, "mm")
w[2] <- 0
w2[2] <- 0
convertUnit(w, "mm")
#[1] 25.4mm 0mm
convertUnit(w2, "mm")
#Error in grid.Call("L_convert", x, as.integer(whatfrom),
as.integer(whatto), :
# INTEGER() can only be applied to a 'integer', not a 'NULL'
The last line fails, as the naive replacement has destroyed the
structure of w2 instead of having assigned a value of 0 to the second
unit element.
I've also tr...