def test_Arrow():
arrow = Arrow()
assert arrow.plot is None
assert arrow.x_start is None
assert arrow.y_start is None
assert arrow.start_units == 'data'
assert arrow.start is None
assert arrow.x_end is None
assert arrow.y_end is None
assert arrow.end_units == 'data'
assert isinstance(arrow.end, ArrowHead)
assert arrow.source is None
assert arrow.x_range_name == "default"
assert arrow.y_range_name == "default"
yield check_line, arrow
yield (check_props, arrow, [
"plot",
"level",
"x_start",
"y_start",
"start_units",
"start",
"x_end",
"y_end",
"end_units",
"end",
"source",
"x_range_name",
"y_range_name"],
LINE)
def test_Arrow():
arrow = Arrow()
assert arrow.plot is None
assert arrow.x_start is None
assert arrow.y_start is None
assert arrow.start_units == 'data'
assert arrow.start is None
assert arrow.x_end is None
assert arrow.y_end is None
assert arrow.end_units == 'data'
assert isinstance(arrow.end, ArrowHead)
assert arrow.source is None
assert arrow.x_range_name == "default"
assert arrow.y_range_name == "default"
check_line_properties(arrow)
check_properties_existence(arrow, [
"plot",
"level",
"visible",
"x_start",
"y_start",
"start_units",
"start",
"x_end",
"y_end",
"end_units",
"end",
"source",
"x_range_name",
"y_range_name"],
LINE)
def add_ascending_node_direction(plot):
plot.add_layout(
Arrow(
end=VeeHead(
size=10,
fill_color=colors["ascending-node"],
line_color=colors["ascending-node"],
),
line_width=3,
x_start=0,
y_start=0,
x_end=constants.PLOTS_RANGE,
y_end=0,
line_color=colors["ascending-node"],
)
)
plot.add_layout(
Label(
text="Ascending Node",
x=0.5 * constants.PLOTS_RANGE,
y=-0.1 * constants.PLOTS_RANGE,
text_font_size="8pt",
text_color=colors["ascending-node"],
)
)
def add_vernal_direction(plot):
plot.add_layout(
Arrow(
end=VeeHead(
size=10, fill_color=colors["vernal"], line_color=colors["vernal"]
),
line_width=3,
x_start=0,
y_start=0,
x_end=constants.PLOTS_RANGE,
y_end=0,
line_color=colors["vernal"],
)
)
plot.add_layout(
Label(
text="Vernal Equinox",
x=0.5 * constants.PLOTS_RANGE,
y=-0.1 * constants.PLOTS_RANGE,
text_font_size="8pt",
text_color=colors["vernal"],
)
)
def add_north_direction(plot):
plot.add_layout(
Arrow(
end=VeeHead(
size=10, fill_color=colors["north"], line_color=colors["north"]
),
line_width=3,
x_start=0,
y_start=0,
x_end=0,
y_end=constants.PLOTS_RANGE,
line_color=colors["north"],
)
)
plot.add_layout(
Label(
text="North",
x=0.05 * constants.PLOTS_RANGE,
y=0.8 * constants.PLOTS_RANGE,
text_font_size="8pt",
text_color=colors["north"],
)
)
eegbrow.update()
# %%
# %%
# %%
# %%
# experiment with more anotations, need to add a scale bar
import bokeh
from bokeh.models.annotations import BoxAnnotation, Arrow
t = eegbrow.loc_sec - eegbrow.page_width_seconds / 2.0
#scalbox = BoxAnnotation(left=t, right=t+0.5, top=500.0, bottom=0, fill_color='gray', fill_alpha=0.5)
#eegbrow.fig.add_layout(scalbox)
arwV = Arrow(x_start=t, x_end=t, y_start=0, y_end=500.0,
end=None) # don't draw an arrow head
arwH = Arrow(x_start=t, x_end=t + 0.5, y_start=0, y_end=0, end=None)
eegbrow.fig.add_layout(arwV)
eegbrow.fig.add_layout(arwH)
eegbrow.push_notebook()
# %%
arwV.x_start = 1384.0
arwV.x_end = 1384.0
eegbrow.push_notebook()
# %%
r = eegbrow.fig.renderers
arrowrend = [ii for ii in r if ii.__class__ == bokeh.models.annotations.Arrow]
a0 = arrowrend[0]
a0.x_end
'y': [4, 7, 5, 5, 9, 2, 3, 4, 3, 4]}) # plot fig_with_label = figure() fig_with_label.line(x='x', y='y', source=fig_with_label_data) # add label label = Label(x=4, y=9, x_offset=10, text='Higest Point', text_baseline='middle') fig_with_label.add_layout(label) # add multiple labels labels = LabelSet(x='x', y='y', text='y', level='glyph', source=fig_with_label_data) fig_with_label.add_layout(labels) # arrow annotation fig_with_label.add_layout(Arrow(end=NormalHead(fill_color='orange'), x_start=5, y_start=7.5, x_end=4.5, y_end=8.8)) show(fig_with_label) Loading BokehJS ... Color Bar In [79]: cars.head() Out[79]: Acceleration Cylinders Displacement Horsepower Miles_per_Gallon Name Origin Weight_in_lbs Year 0 12.0 8 307.0 130.0 18.0 chevrolet chevelle malibu USA 3504 1970-01-01 1 11.5 8 350.0 165.0 15.0 buick skylark 320 USA 3693 1970-01-01 2 11.0 8 318.0 150.0 18.0 plymouth satellite USA 3436 1970-01-01 3 12.0 8 304.0 150.0 16.0 amc rebel sst USA 3433 1970-01-01 4 10.5 8 302.0 140.0 17.0 ford torino USA 3449 1970-01-01 In [80]: from bokeh.models import LinearColorMapper, ColorBar
border_line_color="red", # 背景线条颜色
background_fill_color="gray", # 背景颜色
background_fill_alpha = 0.5, # 透明度
border_line_dash=[6,4]
)
p.add_layout(label)
# 显示
show(p)
''' 箭头 '''
from bokeh.models.annotations import Arrow
from bokeh.models.arrow_heads import OpenHead, NormalHead, VeeHead # 三种箭头类型
# 绘制散点图
p = figure(plot_width=300, plot_height=300)
p.circle(x=[0, 1, 0.5], y=[0, 0, 0.7], radius=0.05, color=["green", "blue", "red"], fill_alpha=0.1)
# 绘制箭头1
p.add_layout(Arrow(end=OpenHead(line_color="firebrick", line_width=4), # 箭头类型，及相关参数：OpenHead, NormalHead, VeeHead
x_start=0, y_start=0, x_end=1, y_end=0)) # 设置箭头矢量方向
# 绘制箭头2
p.add_layout(Arrow(end=NormalHead(fill_color="orange"),
x_start=1, y_start=0, x_end=0.5, y_end=0.7))
# 绘制箭头3
p.add_layout(Arrow(end=VeeHead(size=35), line_color="red",
x_start=0.5, y_start=0.7, x_end=0, y_end=0))
# 显示
show(p)
