momentuHMM 1.4.1 2018-05-21
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NEW FEATURES
* special function 'toState' can now be used in formula argument for modelling transitions to specific states
* timeInStates function added for calculating activity budgets
* modelName argument added to fitHMM and MIfitHMM
* added setModelName and setStateNames functions
* added stationary and plotStationary functions for calculating and visualizing stationary state probabilities as a function of covariates
* plotStationary argument added to plot.momentuHMM, plot.miHMM, and plot.miSum
* added summary.momentuHMMData function
CHANGES
* bug fix when a pseudo-design matrix formula includes interactions with >1 factor variable
* check and print package version upon loading
* unit tests no longer included in CRAN build because they were taking too long
* updated citation info
momentuHMM 1.4.0 2018-02-27
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NEW FEATURES
* von Mises consensus distribution of Rivest et al. (2016) can now be specified for angular data streams
* angleStrength function can now be used in circular-circular regression models. This allows each angular covariate (e.g. wind direction) to be weighted by an additional positive real covariate (e.g. wind speed) as in Rivest et al. (2016).
* checkPar0 function added to aid users with initial parameter (e.g. Par0, beta0, delta0) specification
* centroids argument added to MIfitHMM
* useInitial argument added to MIfitHMM for using parameter estimates of first model fit as initial values for all subsequent model fits
* retrySD argument added to fitHMM and MIfitHMM for specifying standard deviation of random normal perturbations when using retryFits
* alternative optimization methods (``Nelder-Mead'' and ``SANN'') can now be specified in fitHMM and MIfitHMM using the optMethod and control arguments
* prior argument added to fitHMM and MIfitHMM for specifying prior distributions on working parameters
* AICweights function added for calculating AIC weights across a set of candidate models
* sample size (n) argument added to AIC.momentuHMM for calculating small sample corrected AIC (i.e. AICc)
* crawlPlot argument added to plot.crwData as a wrapper for crawl::crwPredictPlot
* various graphical parameters added to plot.momentuHMM for plot customization
CHANGES
* For multiple imputation analyses, pseudoRes (and plotPR) can now calculate (and plot) pseudo-residuals individually for each model fit
* cons and workcons arguments are now deprecated; please use workBounds instead
* verbose argument in fitHMM and MIfitHMM is now deprecated; please use nlmPar instead
momentuHMM 1.3.0 2017-12-06
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NEW FEATURES
* Dynamic activity centers (i.e., those with coordinates that can change over time) can now be handled via the centroids argument in prepData and simData. An example based on the group dynamic model of Langrock et al. (2014) has been added to the vignette.
* initialPosition argument in simData can now be specified as a list indicating the initial position for each individual
CHANGES
* multinomial logit link now used on zeroInflation and oneInflation parameters
* bug fix in calculation of pseudo-residuals (pseudoRes) with zeroInflation and/or oneInflation
* bug fix in CIreal when natural scale delta estimates are near boundary
* bug fix in crawlWrap when predTime is of length one
* bug fix in MIpool when initial distribution includes covariates
* splines and splines2 package dependencies changed to Suggests in DESCRIPTION file
momentuHMM 1.2.0 2017-10-19
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NEW FEATURES
* Regression formulas can now be specified for the initial distributions of HMMs using the formulaDelta argument in fitHMM, MIfitHMM, and simData. These changes are backwards compatible with previous versions, but note that the number and order of arguments has been changed in fitHMM, MIfitHMM, and simData.
CHANGES
* If step length is zero at time t or t+1, simData and prepData now return NA for turning angle at time step t
* bug fix in pseudoRes such that pseudo-residuals now "reset" for each individual
* bug fix in fitHMM when using fixPar to fix initial distribution (delta)
* bug fix in fitHMM when nbStates=1 and circularAngleMean=TRUE
* bug fix in fitHMM when nbStates=1 and retryFits>0
momentuHMM 1.1.1 2017-09-19
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NEW FEATURES
* Normal (Gaussian) and Bernoulli distributions can now be specified for data streams
* Harbour seal example of McClintock et al (2013) added to vignette
Changes
* added pseudoRes continuity adjustment for discrete distributions
momentuHMM 1.1.0 2017-08-15
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NEW FEATURES
* fixPar argument in fitHMM and MIfitHMM now specified on the same scale as the initial parameters (Par0, beta0, and delta0 arguments)
* Factor-level covariates (e.g. 'sexM', `sexF') can now be included in pseudo design matrix DM arguments of fitHMM, MIfitHMM, and simData
* obsPerAnimal argument in simData can now be specified as a list indicating the number of observations for each individual
CHANGES
* vignette now built using knitr
* bug fix in crawlWrap when predTimes argument includes times that are before the time of first observation
* bug fix in plot.miSum calculation of natural scale parameters when cons and/or workcons MIfitHMM arguments are used
momentuHMM 1.0.1 2017-07-17
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NEW FEATURES
* Elephant seal example of Michelot et al (2017) added to vignette
CHANGES
* turning angles for lat/long coordinates (type='LL') now calculated based on initial bearings using geosphere::bearing in turnAngle
* bug fix when calculating activity center distances from lat/long coordinates (type='LL') in distAngle
* bug fix in prepData when successive pairs of coordinates are NA
momentuHMM 1.0.0 2017-06-16
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Initial CRAN posting