Default aesthetics for plotting a hyperSpec object with ggplot2

Convenience functions that automatically map default ggplot2 aesthetics and enamble easy plotting of hyperSpec object with ggplot2.
Default values of aesthetics are
x = ".wavelength",
y = "spc",
group = ".rownames".
These functions can be used with in combination with as.long.df and its wrapper ldf that is more convenient for plotting.

aes_sp(...)

aes_sp_string(...)

aes_sp_(...)

Arguments

...

List of name value pairs giving aesthetics to map to variables. See aes().

Details

Parameters entered to aes_sp, aes_sp_ or aes_sp_string update and modify the list of mapped aesthetics. If default aesthetic (x, y, or group) has to be changed or removed, it shoud be done explicitly, e.g., aes_sp(x = NULL). See examples below.

aes_sp accepts unquoted variable names. It is alternative to aes()

aes_sp_string requires explicitly quoted variable names with "". It is alternative to aes_string()

aes_sp_ is alias to aes_sp_string.

Examples

aes_sp()
#> Aesthetic mapping: 
#> * `group` -> `.rownames`
#> * `x`     -> `.wavelength`
#> * `y`     -> `spc`
   ## * group -> .rownames
   ## * x     -> .wavelength
   ## * y     -> spc

# To add aesthetics:

aes_sp(color = length)
#> Aesthetic mapping: 
#> * `group`  -> `.rownames`
#> * `x`      -> `.wavelength`
#> * `y`      -> `spc`
#> * `colour` -> `length`
   ## * group  -> .rownames
   ## * x      -> .wavelength
   ## * y      -> spc
   ## * colour -> length


# To remove defaul values of aesthetics, do it expicitly:

aes_sp(x = NULL)
#> Aesthetic mapping: 
#> * `group` -> `.rownames`
#> * `y`     -> `spc`
   ## * group -> .rownames
   ## * x     -> .wavelength


# To use `aes_sp` in combination with function `ldf`:

ggplot(ldf(Spectra2[1:10]), aes_sp()) + geom_line()


ggplot() + geom_line(aes_sp(), ldf(Spectra2[1:10]))