# -*- coding: utf-8 -*- # This file is part of pygal # # A python svg graph plotting library # Copyright © 2012-2016 Kozea # # This library is free software: you can redistribute it and/or modify it under # the terms of the GNU Lesser General Public License as published by the Free # Software Foundation, either version 3 of the License, or (at your option) any # later version. # # This library is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more # details. # # You should have received a copy of the GNU Lesser General Public License # along with pygal. If not, see . """Chart properties and drawing""" from math import ceil, cos, sin, sqrt from pygal import stats from pygal._compat import is_list_like from pygal.graph.public import PublicApi from pygal.interpolate import INTERPOLATIONS from pygal.util import ( cached_property, compute_scale, cut, decorate, filter_kwargs, get_text_box, get_texts_box, majorize, rad, reverse_text_len, split_title, truncate, ) from pygal.view import LogView, ReverseView, View, XYLogView class Graph(PublicApi): """Graph super class containing generic common functions""" _dual = False def _decorate(self): """Draw all decorations""" self._set_view() self._make_graph() self._axes() self._legend() self._make_title() self._make_x_title() self._make_y_title() def _axes(self): """Draw axes""" self._y_axis() self._x_axis() def _set_view(self): """Assign a view to current graph""" if self.logarithmic: if self._dual: view_class = XYLogView else: view_class = LogView else: view_class = ReverseView if self.inverse_y_axis else View self.view = view_class( self.width - self.margin_box.x, self.height - self.margin_box.y, self._box ) def _make_graph(self): """Init common graph svg structure""" self.nodes['graph'] = self.svg.node( class_='graph %s-graph %s' % ( self.__class__.__name__.lower(), 'horizontal' if self.horizontal else 'vertical' ) ) self.svg.node( self.nodes['graph'], 'rect', class_='background', x=0, y=0, width=self.width, height=self.height ) self.nodes['plot'] = self.svg.node( self.nodes['graph'], class_="plot", transform="translate(%d, %d)" % (self.margin_box.left, self.margin_box.top) ) self.svg.node( self.nodes['plot'], 'rect', class_='background', x=0, y=0, width=self.view.width, height=self.view.height ) self.nodes['title'] = self.svg.node( self.nodes['graph'], class_="titles" ) self.nodes['overlay'] = self.svg.node( self.nodes['graph'], class_="plot overlay", transform="translate(%d, %d)" % (self.margin_box.left, self.margin_box.top) ) self.nodes['text_overlay'] = self.svg.node( self.nodes['graph'], class_="plot text-overlay", transform="translate(%d, %d)" % (self.margin_box.left, self.margin_box.top) ) self.nodes['tooltip_overlay'] = self.svg.node( self.nodes['graph'], class_="plot tooltip-overlay", transform="translate(%d, %d)" % (self.margin_box.left, self.margin_box.top) ) self.nodes['tooltip'] = self.svg.node( self.nodes['tooltip_overlay'], transform='translate(0 0)', style="opacity: 0", **{'class': 'tooltip'} ) self.svg.node( self.nodes['tooltip'], 'rect', rx=self.tooltip_border_radius, ry=self.tooltip_border_radius, width=0, height=0, **{'class': 'tooltip-box'} ) self.svg.node(self.nodes['tooltip'], 'g', class_='text') def _x_axis(self): """Make the x axis: labels and guides""" if not self._x_labels or not self.show_x_labels: return axis = self.svg.node( self.nodes['plot'], class_="axis x%s" % (' always_show' if self.show_x_guides else '') ) truncation = self.truncate_label if not truncation: if self.x_label_rotation or len(self._x_labels) <= 1: truncation = 25 else: first_label_position = self.view.x(self._x_labels[0][1]) or 0 last_label_position = self.view.x(self._x_labels[-1][1]) or 0 available_space = (last_label_position - first_label_position ) / len(self._x_labels) - 1 truncation = reverse_text_len( available_space, self.style.label_font_size ) truncation = max(truncation, 1) lastlabel = self._x_labels[-1][0] if 0 not in [label[1] for label in self._x_labels]: self.svg.node( axis, 'path', d='M%f %f v%f' % (0, 0, self.view.height), class_='line' ) lastlabel = None for label, position in self._x_labels: if self.horizontal: major = position in self._x_labels_major else: major = label in self._x_labels_major if not (self.show_minor_x_labels or major): continue guides = self.svg.node(axis, class_='guides') x = self.view.x(position) if x is None: continue y = self.view.height + 5 last_guide = (self._y_2nd_labels and label == lastlabel) self.svg.node( guides, 'path', d='M%f %f v%f' % (x or 0, 0, self.view.height), class_='%s%s%sline' % ( 'axis ' if label == "0" else '', 'major ' if major else '', 'guide ' if position != 0 and not last_guide else '' ) ) y += .5 * self.style.label_font_size + 5 text = self.svg.node( guides, 'text', x=x, y=y, class_='major' if major else '' ) text.text = truncate(label, truncation) if text.text != label: self.svg.node(guides, 'title').text = label elif self._dual: self.svg.node( guides, 'title', ).text = self._x_format(position) if self.x_label_rotation: text.attrib['transform'] = "rotate(%d %f %f)" % ( self.x_label_rotation, x, y ) if self.x_label_rotation >= 180: text.attrib['class'] = ' '.join(( text.attrib['class'] and text.attrib['class'].split(' ') or [] ) + ['backwards']) if self._y_2nd_labels and 0 not in [label[1] for label in self._x_labels]: self.svg.node( axis, 'path', d='M%f %f v%f' % (self.view.width, 0, self.view.height), class_='line' ) if self._x_2nd_labels: secondary_ax = self.svg.node( self.nodes['plot'], class_="axis x x2%s" % (' always_show' if self.show_x_guides else '') ) for label, position in self._x_2nd_labels: major = label in self._x_labels_major if not (self.show_minor_x_labels or major): continue # it is needed, to have the same structure as primary axis guides = self.svg.node(secondary_ax, class_='guides') x = self.view.x(position) y = -5 text = self.svg.node( guides, 'text', x=x, y=y, class_='major' if major else '' ) text.text = label if self.x_label_rotation: text.attrib['transform'] = "rotate(%d %f %f)" % ( -self.x_label_rotation, x, y ) if self.x_label_rotation >= 180: text.attrib['class'] = ' '.join(( text.attrib['class'] and text.attrib['class'].split(' ') or [] ) + ['backwards']) def _y_axis(self): """Make the y axis: labels and guides""" if not self._y_labels or not self.show_y_labels: return axis = self.svg.node( self.nodes['plot'], class_="axis y%s" % (' always_show' if self.show_y_guides else '') ) if (0 not in [label[1] for label in self._y_labels] and self.show_y_guides): self.svg.node( axis, 'path', d='M%f %f h%f' % ( 0, 0 if self.inverse_y_axis else self.view.height, self.view.width ), class_='line' ) for label, position in self._y_labels: if self.horizontal: major = label in self._y_labels_major else: major = position in self._y_labels_major if not (self.show_minor_y_labels or major): continue guides = self.svg.node( axis, class_='%sguides' % ('logarithmic ' if self.logarithmic else '') ) x = -5 y = self.view.y(position) if not y: continue if self.show_y_guides: self.svg.node( guides, 'path', d='M%f %f h%f' % (0, y, self.view.width), class_='%s%s%sline' % ( 'axis ' if label == "0" else '', 'major ' if major else '', 'guide ' if position != 0 else '' ) ) text = self.svg.node( guides, 'text', x=x, y=y + .35 * self.style.label_font_size, class_='major' if major else '' ) text.text = label if self.y_label_rotation: text.attrib['transform'] = "rotate(%d %f %f)" % ( self.y_label_rotation, x, y ) if 90 < self.y_label_rotation < 270: text.attrib['class'] = ' '.join(( text.attrib['class'] and text.attrib['class'].split(' ') or [] ) + ['backwards']) self.svg.node( guides, 'title', ).text = self._y_format(position) if self._y_2nd_labels: secondary_ax = self.svg.node(self.nodes['plot'], class_="axis y2") for label, position in self._y_2nd_labels: major = position in self._y_labels_major if not (self.show_minor_y_labels or major): continue # it is needed, to have the same structure as primary axis guides = self.svg.node(secondary_ax, class_='guides') x = self.view.width + 5 y = self.view.y(position) text = self.svg.node( guides, 'text', x=x, y=y + .35 * self.style.label_font_size, class_='major' if major else '' ) text.text = label if self.y_label_rotation: text.attrib['transform'] = "rotate(%d %f %f)" % ( self.y_label_rotation, x, y ) if 90 < self.y_label_rotation < 270: text.attrib['class'] = ' '.join(( text.attrib['class'] and text.attrib['class'].split(' ') or [] ) + ['backwards']) def _legend(self): """Make the legend box""" if not self.show_legend: return truncation = self.truncate_legend if self.legend_at_bottom: x = self.margin_box.left + self.spacing y = ( self.margin_box.top + self.view.height + self._x_title_height + self._x_labels_height + self.spacing ) cols = self.legend_at_bottom_columns or ceil(sqrt(self._order) ) or 1 if not truncation: available_space = self.view.width / cols - ( self.legend_box_size + 5 ) truncation = reverse_text_len( available_space, self.style.legend_font_size ) else: x = self.spacing y = self.margin_box.top + self.spacing cols = 1 if not truncation: truncation = 15 legends = self.svg.node( self.nodes['graph'], class_='legends', transform='translate(%d, %d)' % (x, y) ) h = max(self.legend_box_size, self.style.legend_font_size) x_step = self.view.width / cols if self.legend_at_bottom: secondary_legends = legends # svg node is the same else: # draw secondary axis on right x = self.margin_box.left + self.view.width + self.spacing if self._y_2nd_labels: h, w = get_texts_box( cut(self._y_2nd_labels), self.style.label_font_size ) x += self.spacing + max( w * abs(cos(rad(self.y_label_rotation))), h ) y = self.margin_box.top + self.spacing secondary_legends = self.svg.node( self.nodes['graph'], class_='legends', transform='translate(%d, %d)' % (x, y) ) serie_number = -1 i = 0 for titles, is_secondary in ((self._legends, False), (self._secondary_legends, True)): if not self.legend_at_bottom and is_secondary: i = 0 for title in titles: serie_number += 1 if title is None: continue col = i % cols row = i // cols legend = self.svg.node( secondary_legends if is_secondary else legends, class_='legend reactive activate-serie', id="activate-serie-%d" % serie_number ) self.svg.node( legend, 'rect', x=col * x_step, y=1.5 * row * h + ( self.style.legend_font_size - self.legend_box_size if self.style.legend_font_size > self.legend_box_size else 0 ) / 2, width=self.legend_box_size, height=self.legend_box_size, class_="color-%d reactive" % serie_number ) if isinstance(title, dict): node = decorate(self.svg, legend, title) title = title['title'] else: node = legend truncated = truncate(title, truncation) self.svg.node( node, 'text', x=col * x_step + self.legend_box_size + 5, y=1.5 * row * h + .5 * h + .3 * self.style.legend_font_size ).text = truncated if truncated != title: self.svg.node(legend, 'title').text = title i += 1 def _make_title(self): """Make the title""" if self._title: for i, title_line in enumerate(self._title, 1): self.svg.node( self.nodes['title'], 'text', class_='title plot_title', x=self.width / 2, y=i * (self.style.title_font_size + self.spacing) ).text = title_line def _make_x_title(self): """Make the X-Axis title""" y = (self.height - self.margin_box.bottom + self._x_labels_height) if self._x_title: for i, title_line in enumerate(self._x_title, 1): text = self.svg.node( self.nodes['title'], 'text', class_='title', x=self.margin_box.left + self.view.width / 2, y=y + i * (self.style.title_font_size + self.spacing) ) text.text = title_line def _make_y_title(self): """Make the Y-Axis title""" if self._y_title: yc = self.margin_box.top + self.view.height / 2 for i, title_line in enumerate(self._y_title, 1): text = self.svg.node( self.nodes['title'], 'text', class_='title', x=self._legend_at_left_width, y=i * (self.style.title_font_size + self.spacing) + yc ) text.attrib['transform'] = "rotate(%d %f %f)" % ( -90, self._legend_at_left_width, yc ) text.text = title_line def _interpolate(self, xs, ys): """Make the interpolation""" x = [] y = [] for i in range(len(ys)): if ys[i] is not None: x.append(xs[i]) y.append(ys[i]) interpolate = INTERPOLATIONS[self.interpolate] return list( interpolate( x, y, self.interpolation_precision, **self.interpolation_parameters ) ) def _rescale(self, points): """Scale for secondary""" return [( x, self._scale_diff + (y - self._scale_min_2nd) * self._scale if y is not None else None ) for x, y in points] def _tooltip_data(self, node, value, x, y, classes=None, xlabel=None): """Insert in desc tags informations for the javascript tooltip""" self.svg.node(node, 'desc', class_="value").text = value if classes is None: classes = [] if x > self.view.width / 2: classes.append('left') if y > self.view.height / 2: classes.append('top') classes = ' '.join(classes) self.svg.node(node, 'desc', class_="x " + classes).text = str(x) self.svg.node(node, 'desc', class_="y " + classes).text = str(y) if xlabel: self.svg.node(node, 'desc', class_="x_label").text = str(xlabel) def _static_value( self, serie_node, value, x, y, metadata, align_text='left', classes=None ): """Write the print value""" label = metadata and metadata.get('label') classes = classes and [classes] or [] if self.print_labels and label: label_cls = classes + ['label'] if self.print_values: y -= self.style.value_font_size / 2 self.svg.node( serie_node['text_overlay'], 'text', class_=' '.join(label_cls), x=x, y=y + self.style.value_font_size / 3 ).text = label y += self.style.value_font_size if self.print_values or self.dynamic_print_values: val_cls = classes + ['value'] if self.dynamic_print_values: val_cls.append('showable') self.svg.node( serie_node['text_overlay'], 'text', class_=' '.join(val_cls), x=x, y=y + self.style.value_font_size / 3, attrib={ 'text-anchor': align_text } ).text = value if self.print_zeroes or value != '0' else '' def _points(self, x_pos): """ Convert given data values into drawable points (x, y) and interpolated points if interpolate option is specified """ for serie in self.all_series: serie.points = [(x_pos[i], v) for i, v in enumerate(serie.values)] if serie.points and self.interpolate: serie.interpolated = self._interpolate(x_pos, serie.values) else: serie.interpolated = [] def _compute_secondary(self): """Compute secondary axis min max and label positions""" # secondary y axis support if self.secondary_series and self._y_labels: y_pos = list(zip(*self._y_labels))[1] if self.include_x_axis: ymin = min(self._secondary_min, 0) ymax = max(self._secondary_max, 0) else: ymin = self._secondary_min ymax = self._secondary_max steps = len(y_pos) left_range = abs(y_pos[-1] - y_pos[0]) right_range = abs(ymax - ymin) or 1 scale = right_range / ((steps - 1) or 1) self._y_2nd_labels = [(self._y_format(ymin + i * scale), pos) for i, pos in enumerate(y_pos)] self._scale = left_range / right_range self._scale_diff = y_pos[0] self._scale_min_2nd = ymin def _post_compute(self): """Hook called after compute and before margin computations and plot""" pass def _get_x_label(self, i): """Convenience function to get the x_label of a value index""" if not self.x_labels or not self._x_labels or len(self._x_labels) <= i: return return self._x_labels[i][0] @property def all_series(self): """Getter for all series (nomal and secondary)""" return self.series + self.secondary_series @property def _x_format(self): """Return the abscissa value formatter (always unary)""" return self.x_value_formatter @property def _default_formatter(self): return str @property def _y_format(self): """Return the ordinate value formatter (always unary)""" return self.value_formatter def _value_format(self, value): """ Format value for value display. (Varies in type between chart types) """ return self._y_format(value) def _format(self, serie, i): """Format the nth value for the serie""" value = serie.values[i] metadata = serie.metadata.get(i) kwargs = {'chart': self, 'serie': serie, 'index': i} formatter = ((metadata and metadata.get('formatter')) or serie.formatter or self.formatter or self._value_format) kwargs = filter_kwargs(formatter, kwargs) return formatter(value, **kwargs) def _serie_format(self, serie, value): """Format an independent value for the serie""" kwargs = {'chart': self, 'serie': serie, 'index': None} formatter = (serie.formatter or self.formatter or self._value_format) kwargs = filter_kwargs(formatter, kwargs) return formatter(value, **kwargs) def _compute(self): """Initial computations to draw the graph""" def _compute_margin(self): """Compute graph margins from set texts""" self._legend_at_left_width = 0 for series_group in (self.series, self.secondary_series): if self.show_legend and series_group: h, w = get_texts_box( map( lambda x: truncate(x, self.truncate_legend or 15), [ serie.title['title'] if isinstance(serie.title, dict) else serie.title or '' for serie in series_group ] ), self.style.legend_font_size ) if self.legend_at_bottom: h_max = max(h, self.legend_box_size) cols = ( self._order // self.legend_at_bottom_columns if self.legend_at_bottom_columns else ceil(sqrt(self._order)) or 1 ) self.margin_box.bottom += self.spacing + h_max * round( cols - 1 ) * 1.5 + h_max else: if series_group is self.series: legend_width = self.spacing + w + self.legend_box_size self.margin_box.left += legend_width self._legend_at_left_width += legend_width else: self.margin_box.right += ( self.spacing + w + self.legend_box_size ) self._x_labels_height = 0 if (self._x_labels or self._x_2nd_labels) and self.show_x_labels: for xlabels in (self._x_labels, self._x_2nd_labels): if xlabels: h, w = get_texts_box( map( lambda x: truncate(x, self.truncate_label or 25), cut(xlabels) ), self.style.label_font_size ) self._x_labels_height = self.spacing + max( w * abs(sin(rad(self.x_label_rotation))), h ) if xlabels is self._x_labels: self.margin_box.bottom += self._x_labels_height else: self.margin_box.top += self._x_labels_height if self.x_label_rotation: if self.x_label_rotation % 180 < 90: self.margin_box.right = max( w * abs(cos(rad(self.x_label_rotation))), self.margin_box.right ) else: self.margin_box.left = max( w * abs(cos(rad(self.x_label_rotation))), self.margin_box.left ) if self.show_y_labels: for ylabels in (self._y_labels, self._y_2nd_labels): if ylabels: h, w = get_texts_box( cut(ylabels), self.style.label_font_size ) if ylabels is self._y_labels: self.margin_box.left += self.spacing + max( w * abs(cos(rad(self.y_label_rotation))), h ) else: self.margin_box.right += self.spacing + max( w * abs(cos(rad(self.y_label_rotation))), h ) self._title = split_title( self.title, self.width, self.style.title_font_size ) if self.title: h, _ = get_text_box(self._title[0], self.style.title_font_size) self.margin_box.top += len(self._title) * (self.spacing + h) self._x_title = split_title( self.x_title, self.width - self.margin_box.x, self.style.title_font_size ) self._x_title_height = 0 if self._x_title: h, _ = get_text_box(self._x_title[0], self.style.title_font_size) height = len(self._x_title) * (self.spacing + h) self.margin_box.bottom += height self._x_title_height = height + self.spacing self._y_title = split_title( self.y_title, self.height - self.margin_box.y, self.style.title_font_size ) self._y_title_height = 0 if self._y_title: h, _ = get_text_box(self._y_title[0], self.style.title_font_size) height = len(self._y_title) * (self.spacing + h) self.margin_box.left += height self._y_title_height = height + self.spacing # Inner margin if self.print_values_position == 'top': gh = self.height - self.margin_box.y alpha = 1.1 * (self.style.value_font_size / gh) * self._box.height if self._max and self._max > 0: self._box.ymax += alpha if self._min and self._min < 0: self._box.ymin -= alpha def _confidence_interval(self, node, x, y, value, metadata): if not metadata or 'ci' not in metadata: return ci = metadata['ci'] ci['point_estimate'] = value low, high = getattr( stats, 'confidence_interval_%s' % ci.get('type', 'manual') )(**ci) self.svg.confidence_interval( node, x, # Respect some charts y modifications (pyramid, stackbar) y + (self.view.y(low) - self.view.y(value)), y + (self.view.y(high) - self.view.y(value)) ) @cached_property def _legends(self): """Getter for series title""" return [serie.title for serie in self.series] @cached_property def _secondary_legends(self): """Getter for series title on secondary y axis""" return [serie.title for serie in self.secondary_series] @cached_property def _values(self): """Getter for series values (flattened)""" return [ val for serie in self.series for val in serie.values if val is not None ] @cached_property def _secondary_values(self): """Getter for secondary series values (flattened)""" return [ val for serie in self.secondary_series for val in serie.values if val is not None ] @cached_property def _len(self): """Getter for the maximum series size""" return max([len(serie.values) for serie in self.all_series] or [0]) @cached_property def _secondary_min(self): """Getter for the minimum series value""" return ( self.secondary_range[0] if (self.secondary_range and self.secondary_range[0] is not None) else (min(self._secondary_values) if self._secondary_values else None) ) @cached_property def _min(self): """Getter for the minimum series value""" return ( self.range[0] if (self.range and self.range[0] is not None) else (min(self._values) if self._values else None) ) @cached_property def _max(self): """Getter for the maximum series value""" return ( self.range[1] if (self.range and self.range[1] is not None) else (max(self._values) if self._values else None) ) @cached_property def _secondary_max(self): """Getter for the maximum series value""" return ( self.secondary_range[1] if (self.secondary_range and self.secondary_range[1] is not None) else (max(self._secondary_values) if self._secondary_values else None) ) @cached_property def _order(self): """Getter for the number of series""" return len(self.all_series) def _x_label_format_if_value(self, label): if not isinstance(label, str): return self._x_format(label) return label def _compute_x_labels(self): self._x_labels = self.x_labels and list( zip( map(self._x_label_format_if_value, self.x_labels), self._x_pos ) ) def _compute_x_labels_major(self): if self.x_labels_major_every: self._x_labels_major = [ self._x_labels[i][0] for i in range(0, len(self._x_labels), self.x_labels_major_every) ] elif self.x_labels_major_count: label_count = len(self._x_labels) major_count = self.x_labels_major_count if (major_count >= label_count): self._x_labels_major = [label[0] for label in self._x_labels] else: self._x_labels_major = [ self._x_labels[int( i * (label_count - 1) / (major_count - 1) )][0] for i in range(major_count) ] else: self._x_labels_major = self.x_labels_major and list( map(self._x_label_format_if_value, self.x_labels_major) ) or [] def _compute_y_labels(self): y_pos = compute_scale( self._box.ymin, self._box.ymax, self.logarithmic, self.order_min, self.min_scale, self.max_scale ) if self.y_labels: self._y_labels = [] for i, y_label in enumerate(self.y_labels): if isinstance(y_label, dict): pos = self._adapt(y_label.get('value')) title = y_label.get('label', self._y_format(pos)) elif isinstance(y_label, str): pos = self._adapt(y_pos[i % len(y_pos)]) title = y_label else: pos = self._adapt(y_label) title = self._y_format(pos) self._y_labels.append((title, pos)) self._box.ymin = min(self._box.ymin, min(cut(self._y_labels, 1))) self._box.ymax = max(self._box.ymax, max(cut(self._y_labels, 1))) else: self._y_labels = list(zip(map(self._y_format, y_pos), y_pos)) def _compute_y_labels_major(self): if self.y_labels_major_every: self._y_labels_major = [ self._y_labels[i][1] for i in range(0, len(self._y_labels), self.y_labels_major_every) ] elif self.y_labels_major_count: label_count = len(self._y_labels) major_count = self.y_labels_major_count if (major_count >= label_count): self._y_labels_major = [label[1] for label in self._y_labels] else: self._y_labels_major = [ self._y_labels[int( i * (label_count - 1) / (major_count - 1) )][1] for i in range(major_count) ] elif self.y_labels_major: self._y_labels_major = list(map(self._adapt, self.y_labels_major)) elif self._y_labels: self._y_labels_major = majorize(cut(self._y_labels, 1)) else: self._y_labels_major = [] def add_squares(self, squares): x_lines = squares[0] - 1 y_lines = squares[1] - 1 _current_x = 0 _current_y = 0 for line in range(x_lines): _current_x += (self.width - self.margin_box.x) / squares[0] self.svg.node( self.nodes['plot'], 'path', class_='bg-lines', d='M%s %s L%s %s' % (_current_x, 0, _current_x, self.height - self.margin_box.y) ) for line in range(y_lines): _current_y += (self.height - self.margin_box.y) / squares[1] self.svg.node( self.nodes['plot'], 'path', class_='bg-lines', d='M%s %s L%s %s' % (0, _current_y, self.width - self.margin_box.x, _current_y) ) return ((self.width - self.margin_box.x) / squares[0], (self.height - self.margin_box.y) / squares[1]) def _draw(self): """Draw all the things""" self._compute() self._compute_x_labels() self._compute_x_labels_major() self._compute_y_labels() self._compute_y_labels_major() self._compute_secondary() self._post_compute() self._compute_margin() self._decorate() if self.series and self._has_data() and self._values: self._plot() else: self.svg.draw_no_data() def _has_data(self): """Check if there is any data""" return any([ len([ v for a in (s[0] if is_list_like(s) else [s]) for v in (a if is_list_like(a) else [a]) if v is not None ]) for s in self.raw_series ])