pROC version 1.17.0.1 is available on CRAN now. Besides several bug fixes and small changes, it introduces more values in input of coords.

Here is an example:

library(pROC)
data(aSAH)
rocobj <- roc(aSAH$outcome, aSAH$s100b)
coords(rocobj, x = seq(0, 1, .1), input="recall", ret="precision")
#    precision
# 1        NaN
# 2  1.0000000
# 3  1.0000000
# 4  0.8601399
# 5  0.6721311
# 6  0.6307692
# 7  0.6373057
# 8  0.4803347
# 9  0.4517906
# 10 0.3997833
# 11 0.3628319

Getting the update

The update his available on CRAN now. You can update your installation by simply typing:

install.packages("pROC")

Here is the full changelog:

1.17.0.1 (2020-01-07):

• Fix CRAN incoming checks as requested by CRAN.

1.17.0 (2020-12-29)

• Accept more values in input of coords (issue #67).
• Accept kappa for the power.roc.test of two ROC curves (issue #82).
• The input argument to coords for smooth.roc curves no longer has a default.
• The x argument to coords for smooth.roc can now be set to all (also the default).
• Fix bootstrap roc.test and cov with smooth.roc curves.
• The ggroc function can now plot smooth.roc curves (issue #86).
• Remove warnings with warnPartialMatchDollar option (issue #87).
• Make tests depending on vdiffr conditional (issue #88).