On 18/03/2016 6:09 AM, Lukas Stadler wrote:
While working on the printing code, my colleague Zbyněk Šlajchrt noticed that
complex matrixes are sometimes misaligned:
{ matrix(1i,2,13) }
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13]
[1,] 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i
[2,] 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i 0+1i
(the values in the last four columns should be prefixed by two spaces instead
of one)
while the formatting is fine, e.g., for real values:
{ matrix(1,2,13) }
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13]
[1,] 1 1 1 1 1 1 1 1 1 1 1 1 1
[2,] 1 1 1 1 1 1 1 1 1 1 1 1 1
The problem seems to be in printarray.c:275
(https://github.com/wch/r-source/blob/trunk/src/main/printarray.c#L275):
EncodeComplex(x[i + j * r],
wr[j] + R_print.gap, dr[j], er[j],
wi[j], di[j], ei[j], OutDec)) )
The width of the real part wr[j] + the width of the imaginary part wi[j] +
R_print.gap doesn’t always add up to the width of the column w[j].
As far as we can see, calculating the width of the real part on the fly fixes
the problem:
EncodeComplex(x[i + j * r],
w[j] - wi[j] - 2, dr[j], er[j],
wi[j], di[j], ei[j], OutDec)) )
Thanks, I'll take a look.
Duncan Murdoch
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel