silx.gui.plot.stats.statshandler

This module containts the classes relative to the management of statistics display.

class StatFormatter(formatter='{0:.3f}', qItemClass=<class 'silx.gui.plot.stats.statshandler._FloatItem'>)

Class used to apply format on Stat

Parameters:

• formatter – the formatter. Defined as str.format()
• qItemClass – the class inheriting from QTableWidgetItem which will be used to display the result of the statistic computation.

class StatsHandler(statFormatters)

Give create:

• Stats object which will manage the statistic computation
• Associate formatter and Stat

Parameters:statFormatters – Stat and optional formatter. If elements are given as a tuple, elements should be (Stat, formatter). Otherwise should be Stat elements. Return type:List or tuple

add(stat, formatter=None)

Add a stat to the list.

Parameters:

• stat (StatBase) –
• formatter (Union[None,StatFormatter]) –

format(name, val)

Apply the format for the name statistic and the given value

Parameters:

• name (str) – the name of the associated statistic
• val – value before formatting

Returns:

formatted value

calculate(item, plot, onlimits, roi=None, data_changed=False, roi_changed=False)

compute all statistic registered and return the list of formatted statistics result.

Parameters:

• item – item for which we want to compute statistics
• plot – plot containing the item
• onlimits – True if we want to compute statistics on visible data only
• roi – region of interest for statistic calculation

Type:

bool

Type:

Union[None,:class:_RegionOfInterestBase]

Returns:

list of formatted statistics (as str)

Return type:

dict