我正在学习在Python上使用Bokeh库。我现在所拥有的是:
source = ColumnDataSource(data=dict(x=x, counts=rates))
我的x
值是一个元组数组,如下所示:
x = [('A' ,'1'), ('B', '1'), ('C', '1'), ('A', '2'), ('B', '2'), ('C', '2')]
我想要的是在图形中显示一个工具提示,该提示将显示元组的第二个值(1或2,以相对应的值为准)。我创建了这样的工具提示:
TOOLTIPS = [("Rate", "@counts"), ("Value", "@x")]
第一个(Rate)工作正常,并显示了我想要的值,但第二个显示了两个值(A,1),而我只想显示其中一个(1)。作为记录,这就是我创建图形的方式:
p = figure(x_range=FactorRange(*x), sizing_mode='stretch_both', title="Test",toolbar_location=None, tools="", tooltips=TOOLTIPS)
这可能吗?
答案 0 :(得分:0)
您可以将x数组分成两个单独的数组,以便...
x = [('A' ,'1'), ('B', '1'), ('C', '1'), ('A', '2'), ('B', '2'), ('C', '2')]
...成为...
x_1 = ["A","B","C","A","B","C"] x_2 = ["1","1","1","2","2","2"]
然后将这些阵列提供给CDS。
然后,您在工具提示中仅引用x_2
,就像...
TOOLTIPS = [("Rate", "@counts"), ("Value", "@x_2")]
答案 1 :(得分:0)
您可以像这样使用HoverTool回调(Bokeh v1.0.4):
from bokeh.plotting import figure, show
from bokeh.models import ColumnDataSource, FactorRange, HoverTool, CustomJS
x = [('A' , '1'), ('B', '1'), ('C', '1'), ('A', '2'), ('B', '2'), ('C', '2')]
rates = [1, 2, 3, 4, 5, 6]
source = ColumnDataSource(data = dict(x = x, counts = rates))
TOOLTIPS = [("Rate", "@counts"), ("Value", "@x")]
p = figure(x_range = FactorRange(*x), sizing_mode = 'stretch_both', title = "Test", toolbar_location = None, tools = "")
p.vbar(x = 'x', top = 'counts', width = 0.2, source = source)
code = ''' if (cb_data.index.indices.length > 0) {
index = cb_data.index.indices[0];
x1 = source.data.x[index][1]
hover.tooltips[1] = ['Value', x1];
} '''
hover = HoverTool()
hover.tooltips = TOOLTIPS
hover.callback = CustomJS(args = dict(source = source, hover = hover), code = code)
p.add_tools(hover)
show(p)
结果: