stat_wb_hbar | R Documentation |
stat_wb_hbar
computes means under a curve. It first integrates the
area under a spectral curve and also the mean expressed per nanaometre of
wavelength for each waveband in the input. Sets suitable default aesthetics
for geoms "errorbarh" and "hline" from 'ggplot', and "linerangeh",
and "errorbarh" from 'ggstance'. x
-scale transformations and
axis flipping are currently not supported.
stat_wb_hbar(
mapping = NULL,
data = NULL,
geom = "linerange",
position = "identity",
...,
w.band = NULL,
integral.fun = integrate_xy,
chroma.type = "CMF",
ypos.fixed = NULL,
na.rm = FALSE,
show.legend = NA,
inherit.aes = TRUE
)
mapping |
The aesthetic mapping, usually constructed with
|
data |
A layer specific dataset - only needed if you want to override the plot defaults. |
geom |
The geometric object to use display the data |
position |
The position adjustment to use for overlapping points on this layer |
... |
other arguments passed on to |
w.band |
a waveband object or a list of waveband objects or numeric vector of at least length two. |
integral.fun |
function on $x$ and $y$. |
chroma.type |
character one of "CMF" (color matching function) or "CC"
(color coordinates) or a |
ypos.fixed |
numeric If not |
na.rm |
a logical value indicating whether NA values should be stripped before the computation proceeds. |
show.legend |
logical. Should this layer be included in the legends?
|
inherit.aes |
If |
A data frame with one row for each waveband object in the argument to
w.band
. Wavebeand outside the range of the spectral data are trimmed
or discarded.
What it is named integral below is the result of
appying integral.fun
, with default integrate_xy
.
w.band-midpoint
w.band minimum
w.band maximum
data$y minimum
data$y maximum
data$y integral for the range of w.band
yint divided by wl_expanse(w.band)
ypos.fixed or mean of data
color of the w.band
label of w.band
Set by the statistic and available to geoms.
..xmin..
..xmax..
..ymean..
(..ymax.. - ..ymin..) * 2e-2
..wb.color..
Required by the statistic and need to be set
with aes()
.
numeric, wavelength in nanometres
numeric, a spectral quantity
If the argument passed to w.band
is a BSWF it is silently
converted to a wavelength range and the average of spectral values without
any weighting is returned as default value for y
.
Other stats functions:
stat_color()
,
stat_find_qtys()
,
stat_find_wls()
,
stat_label_peaks()
,
stat_peaks()
,
stat_spikes()
,
stat_wb_box()
,
stat_wb_column()
,
stat_wb_contribution()
,
stat_wb_irrad()
,
stat_wb_label()
,
stat_wb_mean()
,
stat_wb_relative()
,
stat_wb_sirrad()
,
stat_wb_total()
,
stat_wl_strip()
,
stat_wl_summary()
library(photobiologyWavebands)
# ggplot() methods for spectral objects set a default mapping for x and y.
ggplot(sun.spct) +
geom_line() +
stat_wb_hbar(w.band = VIS_bands(), size = 1) +
scale_color_identity() +
theme_bw()
ggplot(sun.spct) +
geom_line() +
stat_wb_hbar(w.band = PAR(), size = 1) +
scale_color_identity() +
theme_bw()
ggplot(sun.spct) +
geom_line() +
stat_wb_hbar(w.band = PAR(), size = 1, ypos.fixed = 0) +
scale_color_identity() +
theme_bw()
ggplot(sun.spct) +
geom_line() +
stat_wb_hbar(w.band = CIE(), size = 1) +
scale_color_identity() +
theme_bw()
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