Given independent and identically distributed observations X(1), ..., X(n), compute the maximum likelihood estimator (MLE) of a density as well as a smoothed version of it under the assumption that the density is log-concave, see Rufibach (2007) and Duembgen and Rufibach (2009). The main function of the package is 'logConDens' that allows computation of the log-concave MLE and its smoothed version. In addition, we provide functions to compute (1) the value of the density and distribution function estimates (MLE and smoothed) at a given point (2) the characterizing functions of the estimator, (3) to sample from the estimated distribution, (5) to compute a two-sample permutation test based on log-concave densities, (6) the ROC curve based on log-concave estimates within cases and controls, including confidence intervals for given values of false positive fractions (7) computation of a confidence interval for the value of the true density at a fixed point. Finally, three datasets that have been used to illustrate log-concave density estimation are made available.

- Minor updates.

- Properly import globals.

- Added proper S3 exporting.

- Updated dependency for c2hat.
- Updated webadress for Lutz Duembgen.

- Updated logConCI to compute a confidence interval.

- Reorganized vignette to conform.
- Updated references.

- Added seed to logConCI.Rd.
- Changed handling of pmax in logConCI().

- Corrected a wrong link in evaluateLogConDens.
- Added the function logConCI, contributed by M. Azadbakhsh and H. Jankowski.
- Updated references.

- Updated package to pass new checks on CRAN.
- Updated references.

- Modified function logConROC (option "smooth").
- Added function confIntBootLogConROC_t0().

- Added NAMESPACE.

- Updated some references.
- Corrected minor typos.

- Contains final JSS paper version.

- Added functions ROCx() and logConROC()
- Added dataset 'pancreas'

- Revision according to reviewer comments for JSS paper.
- Replaced 'vectorToString()' by 'paste()' using option 'collapse'
- Added JSS paper as a vignette to the package

- Substantially reworked version according to revision of paper Duembgen and Rufibach (2010).
- Updated Taylor approximations according to technical report Duembgen et al (2010).

- Added 'reliability' and 'brightstar' datasets.
- Added 'logconSmoothed'.
- Added 'rlogcon'.

- Included vignette in the package.

- Updated references.
- Updated vignette.

- Updated references.

- Updated contact informations.

- Modified quantilesLogConDens. Value for p0 > 1 is set to +Inf.
- Added the functions intF and intECDF.
- Updated references.

- Simplified evaluateLogConDens and quantilesLogConDens. Therefore, J00 was slightly generalized to variable upper endpoint and the function qloglin was introduced.
- Replaced the variable name F for the estimated distribution function by Fhat.
- Shortened title.

- Specified affiliations.
- Indicated that MatLab files are available upon request from Lutz Duembgen.
- MLE: printed only L, but needs to print L_new; and print = 1 replaced by print = TRUE.
- icmaLogCon: replaced ambiguous option "robust" by "robustif" (there is already a function called "robust")
- LocalMLE: replaced explicit calculations by function call to LocalConvexity.
- Help files: reformulated and complemented some entries.
- Vignette: corrected some typos.

- Provide functions to estimate a log-concave probability density.