NEWS

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lmom 3.2 (2024-09-30)

• Removed inappropriate WRITE statement from Fortran code. (Bug introduced at version 3.1.)
• Corrected invalid URL in help file "lmom-package".

lmom 3.1

• In lmrd(fg=...), colour 'fg' is now also used by default for the legend box (if one is drawn, i.e. if 'bty' is supplied as a list element of 'legend.lmrd').
• [invisible to users] Cleanup of Fortran code: changed routine names that conflict with names of Fortran intrinsic functions recognized by CRAN's compiler (GCC 14.2.0); modifications to avoid warnings from CRAN's compiler about "obsolescent features"; specific names of intrinsic functions changed to generic (two instances missed at version 3.0); in (newly renamed) routine XLGAMA, removed an occurrence of a variable used when undefined.
• Minor changes to help for "pel-functions" (changes in section "Details").
• Fixed: lmrd() would apply 'font' (when supplied in '...') to tick mark labels, not to plotted points.

lmom 3.0 (2023-08-29)

• [invisible to users] Cleanup of Fortran code: replaced DFLOAT by DBLE, to enable compilation under a strict F2008 standard; modifications to avoid warnings from CRAN's compiler (GCC 12.2.0) about "Fortran 2018 deleted features"; specific names of intrinsic functions changed to generic; double-precision constants occur only in DATA statements.
• Corrected typos in documentation of cdfgev() and cdfgpa().
• In help for pelkap() and pelwak(), noted that there are some combinations of L-moment values for which these functions are unable to fit a distribution.

lmom 2.9 (2022-05-29)

• [invisible to users] In evplot.default() and evpoints(), computation of plotting positions uses ppoints() rather than an explicit expression.
• In samlmu() and .samlmu(), removed the undocumented behaviour that higher-order sample L-moments were restricted to be no larger than l_2 (the sample L-moment of order 2) in absolute value (and concomitantly that sample L-moment ratios were restricted to the range [-1,1]). This restriction applied to untrimmed L-moments, and induced analogous (but much more complex) restrictions on trimmed sample L-moments.
• samlmu() and samlmu.s() try harder to compute defensible values when 'x' contains Inf or -Inf. In particular, samlmu() no longer gives an error when 'x' contains infinite values.
• samlmu() and samlmu.s() now warn "all data values equal" only when L-moment ratios are computed (previously, a warning was given even when the sample size after trimming was 1 or 2).
• In documentation of cdfgev() and cdfgpa(), added notes explaining that some other R packages use a different convention for the sign of the shape parameter.
• Fixed: Most cdf...() and qua...() functions, if called with 'x' having length 1 and 'para' a named vector, would return a named vector. Affected functions: cdfexp(), cdfgam(), cdfgev(), cdfglo(), cdfgno(), cdfgpa(), cdfgum(), cdfkap(), cdfln3(), cdfwei(), quaexp(), quagam(), quagev(), quaglo(), quagno(), quagpa(), quagum(), quakap(), qualn3(), quape3(), quawak(), quawei().
• Fixed: lmrd() would give an error when plotting of two-parameter distributions was requested but all points to be plotted were outside the plot region.
• Fixed: samlmu() and samlmu.s(), when computing trimmed L-moments, could give incorrect values when extreme values were present in the 'x' values that would be trimmed away. Example: 'samlmu(c(1,2,3,6,1e20), trim=c(0,1))'.
• Fixed: samlmu.s(), with trimming at the upper end of the conceptual sample, would compute too few L-moments, with NA values at the end of the returned vector.
• Fixed: samlmu.s() with sample size 1 (after trimming if requested) would return l_2 as 0 rather than NA.

lmom 2.8 (2019-03-12)

• In lmrp(), 'symm=NA' now indicates asymmetry, similarly to 'symm=FALSE'.
• [invisible to users] Internal C code used by lmrp() and lmrq() changed to avoid a possible memory leak.

lmom 2.6 (2017-08-02)

• "Native routines" are now "registered".
• lmrd() now has a non-NULL return value, useful for adding a customized legend to the plot.
• Internal function infer_trim(), used by pelp() and pelq(), has defensive coding to work around the possibility (new in R 3.3.0) that nchar() may return NA.
• Fixed: lmrd(), when an unrecognized distribution was supplied in argument 'twopar', would give an incorrect error message.

lmom 2.5 (2015-02-02)

• lmrp() no longer allows the argument value 'symm=TRUE' (it was treated as 'symm=0', though this was undocumented).
• Fixed: cdfwak() would give an error if 'x' contained no finite values.
• Fixed: lmrp(...,symm=,ratios=FALSE) and lmrq(..,symm=TRUE,ratios=FALSE) gave incorrect values, by a factor of 2, for higher-order (even, >=4) L-moments.
• Fixed: pelgno() would give an incorrect error message if the supplied value of 'lmom[3]' was greater than 0.95.
• Fixed: samlmu() could, in rare cases, return (untrimmed) L-moment ratios greater than 1 in absolute value.
• Fixed: samlmu.s(ratios=FALSE), when all 'x' values were equal, could return not-exactly-zero values for L-moments.

lmom 2.4 (2014-03-24)

• Fixed: pelwak() would fail when 'bound' was not NULL. (Bug introduced at version 2.3.)

lmom 2.3 (2014-02-09)

• Fixed: pelp() and pelq() required their arguments 'ratios' and 'trim' to be set explicitly in some cases when the values of these arguments were documented as being inferred from the names of 'lmom' -- for example, when 'lmom' was a numeric vector returned by lmrp() or lmrq().
• [invisible to users] Some internal calls to .Fortran() altered, to avoid a NOTE when building the package for CRAN under R version 3.1.0. (Internal functions lmrxxx() and pelxxx() now use switch() to ensure that, in calls to .Fortran(), argument '.NAME' is always a character string and is recognizable as such to CRAN's code checks.)
• [invisible to users] Minor changes to internal Fortran code (routine LMRGPA).

lmom 2.2 (2014-01-15)

• Now explicitly imports standard packages "stats" and "graphics".
• pelp() and pelq() gain an argument 'subdiv'.
• In samlmu() and samlmu.s(), computation of trimmed L-moments is faster for small degrees of trimming.
• Help file for pelwak() now notes the difference between its behaviour and that of the corresponding routine in the LMOMENTS Fortran package.
• Fixed: lmrp() could, in rare cases, attempt to evaluate 'pfunc' with an argument outside the user-supplied bounds.
• Fixed: lmrp(...,order=1,verbose=TRUE) would fail with error "in data.frame( ... : 'row.names' should specify one of the variables". In versions 1.6 and earlier, lmrq(...,order=1,verbose=TRUE) would fail with the same error. In versions 2.0 and later this was masked by the following bug ...
• Fixed: since version 2.0, lmrq(...,order=1) would fail with error "if (denom>0 ... : missing value where TRUE/FALSE needed". pelq(...,type="s"), which calls lmrq(...,order=1) internally, would fail with the same error.
• Fixed: since version 2.0, samlmu() could give an error in some cases when 'nmom' exceeded the number of non-missing values in 'x'.

lmom 2.1 (2013-06-20)

• Removed Fortran 2003 features from the Fortran code used by lmrp() and lmrq(), to enable compilation by CRAN for Macintosh OS.

lmom 2.0 (2013-06-18)

• Some support added for trimmed L-moments: samlmu(), samlmu.s(), lmrp(), lmrq(), pelp(), and pelq() each gain an argument 'trim'.
• Some support added for computing L-moments rather than L-moment ratios: samlmu(), samlmu.s(), lmrp(), lmrq(), pelp(), and pelq() each gain an argument 'ratios'.
• New function .samlmu() for fast computation of (untrimmed) L-moment ratios.
• lmrp() and lmrq() use an internal function for numerical integration, to avoid the bugs present in R's own integrate() function in R versions 2.12.0 through 3.0.1.
• In lmrp(), modified the computation method for lambda_1: should make computations a little faster.
• LICENSE file no longer included in package, to avoid a NOTE when building the package for CRAN under R version 3.0.0. The license can be found at http://www.eclipse.org/legal/cpl-v10.html.

lmom 1.6 (2012-02-04)

• In lmrd(), the framing box and the lines at x=0 and y=0 are drawn in colour 'par("fg")'. The lines for distributions "GEV" and "PE3" use less bright colours.
• In lmrd(), argument 'legend.lmrd' can be a list of arguments to legend().
• In lmrd() there is a small change to the default position of the legend, ensuring that if a legend box is drawn (via the argument 'legend=list(bty="o")'), its top left corner is offset by 45 degrees from the top left corner of the plot.
• Removed inappropriate WRITE statements from Fortran code.
• Fixed: some minor errors in the documentation (expressions for quantile functions in help topics 'cdfgev', 'cdfglo', 'cdfgpa', and 'cdfkap').

lmom 1.5 (2009-11-29)

• Quantile functions drawn by evplot() now extend across the entire x range of the plot (previously, with 'par("xaxs")' at its default value "r", gaps were left at the sides of the plot).
• lmrexp(), lmrgam(), lmrgev(), lmrglo(), lmrgno(), lmrgpa(), lmrgum(), lmrkap(), lmrnor(), lmrpe3(), lmrwak(), pelp(), and pelq() now have a different specification of the default values for some of their arguments. The actual usage of the functions is unchanged. The change was made so that the help files can avoid the use of a "\synopsis" section, which was giving unintended results in R 2.10.0.

lmom 1.4 (2009-07-18)

• New functions lmrdpoints() and lmrdlines(), to add points or lines to an existing L-moment ratio diagram.
• evplot.default() is now exported from the package namespace.

lmom 1.3 (2009-05-04)

• evplot() is now a generic function, with (only) a default method. (Further methods will be defined in package lmomRFA, version 2.0.)
• evplot(), when argument 'qfunc' is present but 'para' is missing, no longer gives an error but instead uses default values for the parameters of the distribution, i.e. internally it calls function 'qfunc' with only one argument. evdistp() and evdistq(), when argument 'para' is missing, act similarly.
• lmrd(), when 'x' is supplied but not 'y', now tries to identify L-skewness and L-kurtosis elements in 'x' by name rather than by position.
• lmrd() now recognizes distribution identifiers ("GEV", etc.) in either upper or lower case.
• lmrd() gains an argument 'cex', to control the size of plotted points.
• lmrd(), when given an argument 'col' of length 1, will apply it to the plotted points rather than to all the lines.
• samlmu() and samlmu.s() give a more direct error message when their first argument is not numeric.
• Fixed: evplot() would sometimes not honour the y-axis limits supplied in 'ylim'. Specifically, if argument 'qfunc' was specified, the y-axis limits would be extended if necessary to include the range of quantile values plotted.
• Fixed: lmrd() would set default y axis limits based on the values of 'x', not of 'y'.

lmom 1.2 (2009-03-16)

• Default parameter values for the Weibull distribution are now 'c(0,1,1)'. (The previous default, 'c(0,1,0)', used an invalid value for the third parameter.) Functions affected: cdfwei(), lmrwei(), quawei().
• Fixed: cdfgum() gave incorrect results.

lmom 1.1 (2008-12-24)

• New functions, for the Weibull distribution: cdfwei(), lmrwei(), pelwei(), quawei().
• New functions, for the 3-parameter lognormal distribution: cdfln3(), lmrln3(), pelln3(), qualn3(). pelln3() also permits parameter estimation for the 2-parameter lognormal distribution.
• Fixed: pelp() and pelq() would fail when the name of the optimization routine (argument 'method') was also the name of an object in the global environment.

lmom 1.0 (2008-07-03)

• Initial release. Functions included: cdfexp cdfgam cdfgev cdfglo cdfgno cdfgpa cdfgum cdfkap cdfnor cdfpe3 cdfwak evdistp evdistq evplot evpoints lmrd lmrexp lmrgam lmrgev lmrglo lmrgno lmrgpa lmrgum lmrkap lmrnor lmrp lmrpe3 lmrq lmrwak pelexp pelgam pelgev pelglo pelgno pelgpa pelgum pelkap pelnor pelp pelpe3 pelq pelwak quaexp quagam quagev quaglo quagno quagpa quagum quakap quanor quape3 quawak samlmu samlmu.s