/usr/lib/python3/dist-packages/xlsxwriter/chart_scatter.py is in python3-xlsxwriter 0.7.3-1.
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#
# ChartScatter - A class for writing the Excel XLSX Scatter charts.
#
# Copyright 2013-2015, John McNamara, jmcnamara@cpan.org
#
from . import chart
class ChartScatter(chart.Chart):
"""
A class for writing the Excel XLSX Scatter charts.
"""
###########################################################################
#
# Public API.
#
###########################################################################
def __init__(self, options=None):
"""
Constructor.
"""
super(ChartScatter, self).__init__()
if options is None:
options = {}
self.subtype = options.get('subtype')
if not self.subtype:
self.subtype = 'marker_only'
self.cross_between = 'midCat'
self.horiz_val_axis = 0
self.val_axis_postion = 'b'
self.smooth_allowed = True
self.requires_category = True
# Set the available data label positions for this chart type.
self.label_position_default = 'right'
self.label_positions = {
'center': 'ctr',
'right': 'r',
'left': 'l',
'above': 't',
'below': 'b',
# For backward compatibility.
'top': 't',
'bottom': 'b'}
def combine(self, chart=None):
"""
Create a combination chart with a secondary chart.
Note: Override parent method to add a warning.
Args:
chart: The secondary chart to combine with the primary chart.
Returns:
Nothing.
"""
if chart is None:
return
warn('Combined chart not currently supported with scatter chart '
'as the primary chart')
###########################################################################
#
# Private API.
#
###########################################################################
def _write_chart_type(self, args):
# Override the virtual superclass method with a chart specific method.
# Write the c:scatterChart element.
self._write_scatter_chart(args)
###########################################################################
#
# XML methods.
#
###########################################################################
def _write_scatter_chart(self, args):
# Write the <c:scatterChart> element.
if args['primary_axes']:
series = self._get_primary_axes_series()
else:
series = self._get_secondary_axes_series()
if not len(series):
return
style = 'lineMarker'
subtype = self.subtype
# Set the user defined chart subtype.
if subtype == 'marker_only':
style = 'lineMarker'
if subtype == 'straight_with_markers':
style = 'lineMarker'
if subtype == 'straight':
style = 'lineMarker'
if subtype == 'smooth_with_markers':
style = 'smoothMarker'
if subtype == 'smooth':
style = 'smoothMarker'
# Add default formatting to the series data.
self._modify_series_formatting()
self._xml_start_tag('c:scatterChart')
# Write the c:scatterStyle element.
self._write_scatter_style(style)
# Write the series elements.
for data in series:
self._write_ser(data)
# Write the c:marker element.
self._write_marker_value()
# Write the c:axId elements
self._write_axis_ids(args)
self._xml_end_tag('c:scatterChart')
def _write_ser(self, series):
# Over-ridden to write c:xVal/c:yVal instead of c:cat/c:val elements.
# Write the <c:ser> element.
index = self.series_index
self.series_index += 1
self._xml_start_tag('c:ser')
# Write the c:idx element.
self._write_idx(index)
# Write the c:order element.
self._write_order(index)
# Write the series name.
self._write_series_name(series)
# Write the c:spPr element.
self._write_sp_pr(series)
# Write the c:marker element.
self._write_marker(series.get('marker'))
# Write the c:dPt element.
self._write_d_pt(series.get('points'))
# Write the c:dLbls element.
self._write_d_lbls(series.get('labels'))
# Write the c:trendline element.
self._write_trendline(series.get('trendline'))
# Write the c:errBars element.
self._write_error_bars(series.get('error_bars'))
# Write the c:xVal element.
self._write_x_val(series)
# Write the c:yVal element.
self._write_y_val(series)
# Write the c:smooth element.
if 'smooth' in self.subtype and series['smooth'] is None:
# Default is on for smooth scatter charts.
self._write_c_smooth(True)
else:
self._write_c_smooth(series['smooth'])
self._xml_end_tag('c:ser')
def _write_plot_area(self):
# Over-ridden to have 2 valAx elements for scatter charts instead
# of catAx/valAx.
#
# Write the <c:plotArea> element.
self._xml_start_tag('c:plotArea')
# Write the c:layout element.
self._write_layout(self.plotarea.get('layout'), 'plot')
# Write the subclass chart elements for primary and secondary axes.
self._write_chart_type({'primary_axes': 1})
self._write_chart_type({'primary_axes': 0})
# Write c:catAx and c:valAx elements for series using primary axes.
self._write_cat_val_axis({'x_axis': self.x_axis,
'y_axis': self.y_axis,
'axis_ids': self.axis_ids,
'position': 'b',
})
tmp = self.horiz_val_axis
self.horiz_val_axis = 1
self._write_val_axis({'x_axis': self.x_axis,
'y_axis': self.y_axis,
'axis_ids': self.axis_ids,
'position': 'l',
})
self.horiz_val_axis = tmp
# Write c:valAx and c:catAx elements for series using secondary axes
self._write_cat_val_axis({'x_axis': self.x2_axis,
'y_axis': self.y2_axis,
'axis_ids': self.axis2_ids,
'position': 'b',
})
self.horiz_val_axis = 1
self._write_val_axis({'x_axis': self.x2_axis,
'y_axis': self.y2_axis,
'axis_ids': self.axis2_ids,
'position': 'l',
})
# Write the c:spPr element for the plotarea formatting.
self._write_sp_pr(self.plotarea)
self._xml_end_tag('c:plotArea')
def _write_x_val(self, series):
# Write the <c:xVal> element.
formula = series.get('categories')
data_id = series.get('cat_data_id')
data = self.formula_data[data_id]
self._xml_start_tag('c:xVal')
# Check the type of cached data.
data_type = self._get_data_type(data)
# TODO. Can a scatter plot have non-numeric data.
if data_type == 'str':
# Write the c:numRef element.
self._write_str_ref(formula, data, data_type)
else:
# Write the c:numRef element.
self._write_num_ref(formula, data, data_type)
self._xml_end_tag('c:xVal')
def _write_y_val(self, series):
# Write the <c:yVal> element.
formula = series.get('values')
data_id = series.get('val_data_id')
data = self.formula_data[data_id]
self._xml_start_tag('c:yVal')
# Unlike Cat axes data should only be numeric.
# Write the c:numRef element.
self._write_num_ref(formula, data, 'num')
self._xml_end_tag('c:yVal')
def _write_scatter_style(self, val):
# Write the <c:scatterStyle> element.
attributes = [('val', val)]
self._xml_empty_tag('c:scatterStyle', attributes)
def _modify_series_formatting(self):
# Add default formatting to the series data unless it has already been
# specified by the user.
subtype = self.subtype
# The default scatter style "markers only" requires a line type.
if subtype == 'marker_only':
# Go through each series and define default values.
for series in self.series:
# Set a line type unless there is already a user defined type.
if not series['line']['defined']:
series['line'] = {'width': 2.25,
'none': 1,
'defined': 1,
}
# Turn markers off for subtypes that don't have them.
if 'marker' not in subtype:
# Go through each series and define default values.
for series in self.series:
# Set a marker type unless there is a user defined type.
if not series.get('marker'):
series['marker'] = {'type': 'none', 'defined': 1}
def _write_d_pt_point(self, index, point):
# Write an individual <c:dPt> element. Override the parent method to
# add markers.
self._xml_start_tag('c:dPt')
# Write the c:idx element.
self._write_idx(index)
self._xml_start_tag('c:marker')
# Write the c:spPr element.
self._write_sp_pr(point)
self._xml_end_tag('c:marker')
self._xml_end_tag('c:dPt')
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