Changes in pems.utils 0.2.17 [2016-02-02]
========================================

*       redrafted title and description 
        (tidy re pems.utils2CRAN)
*       changed calcEmHoribaPitot formals 
        (catch check note; re pems.utils2CRAN)
*       documentation tidy re pems.utils2CRAN
*       pemsPlot zlab tidy re pems.utils2CRAN
*       added up-front code (in calcEm, to 
        catch check note on data object object
        names; re pems.utils2CRAN 


Changes in pems.utils 0.2.16 [2015-12-28]
========================================

*       added plyr to imports
*       added align and tAlign functions 
*       updated cAlign function
*       removed bindPEMS (superceded by 
        align and new cAlign)
*       update to WatsonPlot, revised 
        argument order in formals
*       added and documented 
        panel.WatsonSmoothContourPlot


Changes in pems.utils 0.2.15 [2015-09-18]
========================================

*       moved latticeExtra to imports
*       added with.pems method 
*       updated makePEMS, now accepts 
        vector, pems.element, etc
*       update to pemsPlot, grid now added 
        by default 
*       added pems[[]]<- as quick reset 
        for object structure
*       added subset.pems method
*       update to print.pems
*       added is.pems, pems, pems.element; 
        these replace isPEMS, makePEMS, 
        makePEMSElement (retained as wrappers)
*       added as.pems methods (default, 
        data.frame)


Changes in pems.utils 0.2.14 [2015-08-18]
========================================

*       added importCAGE2PEMS function, 
        loads 3DATX CAGE data as pems 
        object
*       updated importParSYNC2PEMS, now 
        defaults to local time zone 
*       updated print.pems.element and 
        plot.pems.element, labelling now 
        ignores "" units 
*       added fortify.pems method to 
        simplfy use ggplot2 functions 
        with pems objects; also added
        ggplot2:fortify.defaults to 
        imports
*       moved utils, grid, RColorBrewer 
        from depends to imports
*       added dim.pems ncol.pms and 
        nrow.pems method
*       added pems[[]] as quick access 
        to object structure


Changes in pems.utils 0.2.13 [2015-08-06]
========================================

*       updated checkInput, improved 
        handling of POSIXct class 
        pems.elements 
        

Changes in pems.utils 0.2.12 [2015-07-29]
========================================

*       modified importParSYNC2PEMS 
        function. The more general arg
        reset.signals replaces previous 
        reset.opacity


Changes in pems.utils 0.2.11 [2015-04-13]
========================================

*       added summary.pems.element method


Changes in pems.utils 0.2.10 [2015-03-14]
========================================

*       added importParSYNC2PEMS function
*       updated cutBy error message
 

Changes in pems.utils 0.2.9 [2015-01-23]
========================================

*       updated citation, now uses meta$ 
        (thanks to Achim Zeileis of JSS) 
*       refined head.pems and tail.pems
*       changed print.pems defaults (thanks to 
        Stephen Hanley of ITS)
*       refined pems[], now allows more forcing 
        options
*       simplified pems$name and pems$name <- 
        further, so they now behave more like 
        data.frame$name 
*       refined pems[]<-, extended forcing options 
*       added units(pems)<-  and names(pems) <- 
        methods
*       added units(pems.element)<- method 
         

Changes in pems.utils 0.2.8 [2014-04-30]
========================================

*       simplified pems[,n] and pems$n code
*       added [n], units pems.element methods
*       added utils to depends (for head.default 
        and tail.default access)
*       added head and tail pems methods
*       added makePEMSElement (makePEMS
        equivalent)
*       added the WatsonPlot functions used in 
        CRC and PEMS 2014 work 
*       updated pems default col scheme to match scheme 
        used in CRC and PEMS 2014 work
*       calcChecks code update 


Changes in pems.utils 0.2.7 [2014-02-17]
========================================

*       added pems.scheme, default pems 
        plotting scheme
*       convertUnits update, force now 
        forces to from unit conversion 
        if input units are either not 
        set or do not match from
*       added pemsPlot function to package
        (preprocess, panel and plot 
        using loa)
        

Changes in pems.utils 0.2.6 [2013-09-26]
========================================

*       added as.data.frame.pems 


Changes in pems.utils 0.2.5 [2013-08-11]
========================================

*       updated ref.unit.conversions 
*       added correction functions
        (correctInput, zeroNegatives)
*       added importOB12PEMS function
        (imports OB1 format files)


Changes in pems.utils 0.2.4 [2013-08-08]
========================================

*       refined history tracking for 
        functions in functions


Changes in pems.utils 0.2.3 [2013-06-20]
========================================

*       refined pems object case
*       added pems.element object case  
*       added pems... shortcut functions
*       reintroduced calcEm


Changes in pems.utils 0.2.2 [2013-01-10]
========================================

*       added pems object case  


Changes in pems.utils 0.2.1 [2012-06-15]
========================================

*       refined pems structure
        (to simiplify batch processing)  


Changes in pems.utils 0.1.12 [2012-01-10]
========================================

*       pems => pems.utils update
        [earlier versions documented elsewhere]