BkgModelHistogram

class sherpa.astro.plot.BkgModelHistogram

Bases: ModelHistogram

Plot a background model for a PHA dataset with no grouping.

The model is drawn at the native resolution of the instrument response, or ungrouped channels. The model is filtered to the minimum and maximum of the background to the PHA dataset but any ignored ranges within this are ignored.

Attributes Summary

histo_prefs	The preferences for the plot.
x	Return (xlo + xhi) / 2

Methods Summary

hline(y[, xmin, xmax, linecolor, linestyle, ...])	Draw a line at constant y, extending over the plot.
overplot(*args, **kwargs)
plot([overplot, clearwindow])	Plot the data.
prepare(data, model[, stat])
vline(x[, ymin, ymax, linecolor, linestyle, ...])	Draw a line at constant x, extending over the plot.

Attributes Documentation

histo_prefs = {'alpha': None, 'capsize': None, 'color': None, 'ecolor': None, 'label': None, 'linestyle': 'solid', 'linewidth': None, 'marker': 'None', 'markerfacecolor': None, 'markersize': None, 'xerrorbars': False, 'xlog': False, 'yerrorbars': False, 'ylog': False}

The preferences for the plot.

x

Return (xlo + xhi) / 2

This is intended to make it easier to swap between plot- and histogram-style plots by providing access to an X value.

Methods Documentation

static hline(y, xmin=0, xmax=1, linecolor=None, linestyle=None, linewidth=None, overplot=False, clearwindow=True)

Draw a line at constant y, extending over the plot.

overplot(*args, **kwargs)

plot(overplot=False, clearwindow=True, **kwargs)

Plot the data.

This will plot the data sent to the prepare method.

Parameters:

• overplot (bool, optional) – If True then add the data to an existing plot, otherwise create a new plot.

• clearwindow (bool, optional) – Should the existing plot area be cleared before creating this new plot (e.g. for multi-panel plots)?

• **kwargs – These values are passed on to the plot backend, and must match the names of the keys of the object’s plot_prefs dictionary.

See also

prepare, overplot

prepare(data, model, stat=None)

static vline(x, ymin=0, ymax=1, linecolor=None, linestyle=None, linewidth=None, overplot=False, clearwindow=True)

Draw a line at constant x, extending over the plot.