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###############################################################################
#
# ChartRadar - A class for writing the Excel XLSX Radar charts.
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2013-2025, John McNamara, jmcnamara@cpan.org
#
from . import chart
class ChartRadar(chart.Chart):
"""
A class for writing the Excel XLSX Radar charts.
"""
###########################################################################
#
# Public API.
#
###########################################################################
def __init__(self, options=None):
"""
Constructor.
"""
super().__init__()
if options is None:
options = {}
self.subtype = options.get("subtype")
if not self.subtype:
self.subtype = "marker"
self.default_marker = {"type": "none"}
# Override and reset the default axis values.
self.x_axis["defaults"]["major_gridlines"] = {"visible": 1}
self.set_x_axis({})
# Set the available data label positions for this chart type.
self.label_position_default = "center"
self.label_positions = {"center": "ctr"}
# Hardcode major_tick_mark for now until there is an accessor.
self.y_axis["major_tick_mark"] = "cross"
###########################################################################
#
# Private API.
#
###########################################################################
def _write_chart_type(self, args):
# Write the c:radarChart element.
self._write_radar_chart(args)
###########################################################################
#
# XML methods.
#
###########################################################################
def _write_radar_chart(self, args):
# Write the <c:radarChart> element.
if args["primary_axes"]:
series = self._get_primary_axes_series()
else:
series = self._get_secondary_axes_series()
if not series:
return
self._xml_start_tag("c:radarChart")
# Write the c:radarStyle element.
self._write_radar_style()
# Write the series elements.
for data in series:
self._write_ser(data)
# Write the c:axId elements
self._write_axis_ids(args)
self._xml_end_tag("c:radarChart")
def _write_radar_style(self):
# Write the <c:radarStyle> element.
val = "marker"
if self.subtype == "filled":
val = "filled"
attributes = [("val", val)]
self._xml_empty_tag("c:radarStyle", attributes)
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