157 lines
4.8 KiB
Python
157 lines
4.8 KiB
Python
import pandas
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import copy
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from pandas.io.json import dumps
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class Highchart(object):
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def __init__(
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self, df,
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chart_type="spline",
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target_div="#chart",
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polar=False,
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width=None,
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height=None,
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show_legend=True,
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stockchart=True,
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title=None,
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tooltip=None,
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sort_columns=False,
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secondary_y=None,
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mark_right=False,
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compare=False,
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stacked=False,
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logx=False,
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logy=False,
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xlim=None,
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ylim=None,
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grid=False,
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zoom=None):
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self.df = df
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self.chart_type = chart_type
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self.chart = chart = {}
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self.stockchart = stockchart
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self.sort_columns = sort_columns
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self.secondary_y = secondary_y or []
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self.mark_right = mark_right
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self.compare = compare
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self.logx = logx
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self.logy = logy
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self.xlim = xlim
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self.ylim = ylim
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self.zoom = zoom
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self.polar = polar
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self.grid = grid
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chart['chart'] = {}
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chart['chart']["type"] = chart_type
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chart['chart']['renderTo'] = target_div
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if width:
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chart['chart']["width"] = width
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if height:
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chart['chart']["height"] = height
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chart['chart']['polar'] = polar
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chart["legend"] = {
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"enabled": show_legend
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}
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if title:
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chart["title"] = {"text": title}
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if tooltip:
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chart['tooltip'] = tooltip
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if self.zoom:
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chart["zoomType"] = self.zoom
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self.serialize_series()
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self.serialize_xaxis()
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self.serialize_yaxis()
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self.chart = chart
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def serialize_series(self):
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df = self.df
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chart = self.chart
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if self.sort_columns:
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df = df.sort_index()
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series = df.to_dict('series')
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chart["series"] = []
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for name, data in series.items():
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if df[name].dtype.kind not in "biufc":
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continue
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sec = name in self.secondary_y
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d = {
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"name": name if not sec or self.mark_right else name + " (right)",
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"yAxis": int(sec),
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"data": zip(df.index, data.tolist())
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}
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if self.polar:
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d['data'] = [v for k, v in d['data']]
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if self.compare:
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d['compare'] = self.compare # either `value` or `percent`
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if self.chart_type in ("area", "bar") and self.stacked:
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d["stacking"] = 'normal'
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#if kwargs.get("style"):
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# d["dashStyle"] = pd2hc_linestyle(kwargs["style"].get(name, "-"))
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chart["series"].append(d)
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def serialize_xaxis(self):
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df = self.df
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x_axis = {}
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if df.index.name:
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x_axis["title"] = {"text": df.index.name}
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if df.index.dtype.kind in "M":
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x_axis["type"] = "datetime"
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if df.index.dtype.kind == 'O':
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chart['xAxis']['categories'] = sorted(list(df.index)) if self.sort_columns else list(df.index)
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if self.grid:
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x_axis["gridLineWidth"] = 1
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x_axis["gridLineDashStyle"] = "Dot"
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if self.logx:
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x_axis["type"] = 'logarithmic'
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if self.xlim:
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x_axis["min"] = self.xlim[0]
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x_axis["max"] = self.xlim[1]
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'''
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if "rot" in kwargs:
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x_axis["labels"] = {"rotation": kwargs["rot"]}
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if "fontsize" in kwargs:
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x_axis.setdefault("labels", {})["style"] = {"fontSize": kwargs["fontsize"]}
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if "xticks" in kwargs:
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x_axis["tickPositions"] = kwargs["xticks"]
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'''
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self.x_axis = x_axis
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def serialize_yaxis(self):
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yAxis = {}
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chart = self.chart
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if self.grid:
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yAxis["gridLineWidth"] = 1
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yAxis["gridLineDashStyle"] = "Dot"
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if self.logy:
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yAxis["type"] = 'logarithmic'
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if self.ylim:
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yAxis["min"] = self.ylim[0]
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yAxis["max"] = self.ylim[1]
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'''
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if "rot" in kwargs:
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yAxis["labels"] = {"rotation": kwargs["rot"]}
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if "fontsize" in kwargs:
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yAxis.setdefault("labels", {})["style"] = {"fontSize": kwargs["fontsize"]}
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if "yticks" in kwargs:
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yAxis["tickPositions"] = kwargs["yticks"]
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'''
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chart["yAxis"] = [yAxis]
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if self.secondary_y:
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yAxis2 = copy.deepcopy(yAxis)
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yAxis2["opposite"] = True
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chart["yAxis"].append(yAxis2)
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@property
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def javascript_cmd(self):
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js = dumps(self.chart)
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if self.stockchart:
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return "new Highcharts.StockChart({});".format(js)
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return "new Highcharts.Chart({});".format(js)
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