Publications by wrathematics

Password Input with getPass

As of this morning, the getPass package version 0.1-1 is available on CRAN. The package offers a portable way to read user input without echoing the text, for the purposes of reading passwords. Some screenshots from various platforms are given below. Implementation details are described in the package vignette. The short version is, if you use�...

1300 sym 2 img

Password Input with getPass

As of this morning, the getPass package version 0.1-1 is available on CRAN. The package offers a portable way to read user input without echoing the text, for the purposes of reading passwords. Some screenshots from various platforms are given below. Implementation details are described in the package vignette. The short version is, if you us...

1307 sym 2 img

Comparing Symmetric Eigenvalue Performance

Lazy reader’s guide: skip to the pretty pictures, skim the conclusions section, ignore the rest. Background I think a lot about eigenvalue and singular value decompositions. I won’t get into it right now, but I have been quoted in the past as saying that singular values are eigenvalues for grownups. But today we need to go back to gradescho...

10786 sym R (2458 sym/12 pcs) 10 img