# merge_RLum.Data.Curve

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##### Merge function for RLum.Data.Curve S4 class objects

Function allows merging of RLum.Data.Curve objects in different ways

Keywords
internal, utilities
##### Usage
merge_RLum.Data.Curve(object, merge.method = "mean", method.info)
##### Arguments
object

list of '>RLum.Data.Curve (required): list of S4 objects of class RLum.Curve.

merge.method

character (required): method for combining of the objects, e.g. 'mean', 'sum', see details for further information and allowed methods. Note: Elements in slot info will be taken from the first curve in the list.

method.info

numeric (optional): allows to specify how info elements of the input objects are combined, e.g. 1 means that just the elements from the first object are kept, 2 keeps only the info elements from the 2 object etc. If nothing is provided all elements are combined.

##### Details

This function simply allowing to merge '>RLum.Data.Curve objects without touching the objects itself. Merging is always applied on the 2nd colum of the data matrix of the object.

Supported merge operations are '>RLum.Data.Curve

"sum"

All count values will be summed up using the function rowSums.

"mean"

The mean over the count values is calculated using the function rowMeans.

"median"

The median over the count values is calculated using the function matrixStats::rowMedians.

"sd"

The standard deviation over the count values is calculated using the function matrixStats::rowSds.

"var"

The variance over the count values is calculated using the function matrixStats::rowVars.

"min"

The min values from the count values is chosen using the function matrixStats::rowMins.

"max"

The max values from the count values is chosen using the function matrixStats::rowMins.

"append"

Appends count values of all curves to one combined data curve. The channel width is automatically re-calculated, but requires a constant channel width of the original data.

"-"

The row sums of the last objects are subtracted from the first object.

"*"

The row sums of the last objects are mutliplied with the first object.

"/"

Values of the first object are divided by row sums of the last objects.

##### Value

Returns an '>RLum.Data.Curve object.

##### Note

The information from the slot recordType is taken from the first '>RLum.Data.Curve object in the input list. The slot 'curveType' is filled with the name merged.

##### S3-generic support

This function is fully operational via S3-generics: +, -, /, *, merge

##### Function version

0.2.0 (2018-02-08 18:09:55)

##### How to cite

Kreutzer, S. (2018). merge_RLum.Data.Curve(): Merge function for RLum.Data.Curve S4 class objects. Function version 0.2.0. In: Kreutzer, S., Burow, C., Dietze, M., Fuchs, M.C., Schmidt, C., Fischer, M., Friedrich, J. (2018). Luminescence: Comprehensive Luminescence Dating Data Analysis. R package version 0.8.6. https://CRAN.R-project.org/package=Luminescence

merge_RLum, '>RLum.Data.Curve

##### Aliases
• merge_RLum.Data.Curve
##### Examples
# NOT RUN {

data(ExampleData.XSYG, envir = environment())

##grep first and 3d TL curves
TL.curves  <- get_RLum(OSL.SARMeasurement\$Sequence.Object, recordType = "TL (UVVIS)")
TL.curve.1 <- TL.curves[[1]]
TL.curve.3 <- TL.curves[[3]]

##plot single curves
plot_RLum(TL.curve.1)
plot_RLum(TL.curve.3)

##subtract the 1st curve from the 2nd and plot
TL.curve.merged <- merge_RLum.Data.Curve(list(TL.curve.3, TL.curve.1), merge.method = "/")
plot_RLum(TL.curve.merged)

# }

Documentation reproduced from package Luminescence, version 0.8.6, License: GPL-3

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