2017-04-23 68 views
0

我能夠更新Bokeh服務器渲染器的顏色和線寬,但如果我嘗試更新「尺寸」,則什麼也不會發生。您可以在顏色框中輸入顏色(黑色,綠色,藍色等),並且渲染器會更改顏色。我一直在調整sliders.py示例來測試。代碼如下。如果在update_size方法中將glyph.size更改爲glyph.line_width,則該圖確實會更新線寬,但使用「size」時不會發生任何情況。我使用Python 2.7.12,Ubuntu 16.04,散景服務器0.12.5和Tornado 4.4.2。謝謝您的幫助。無法使用Bokeh服務器交互式更新渲染器(即圓形,三角形等)尺寸

import numpy as np 
from bokeh.io import curdoc 
from bokeh.layouts import row, widgetbox 
from bokeh.models import ColumnDataSource 
from bokeh.models.widgets import Slider, TextInput 
from bokeh.plotting import figure 

# Set up data 
N = 200 
x = np.linspace(0, 4*np.pi, N) 
y = np.sin(x) 
source = ColumnDataSource(data=dict(x=x, y=y)) 

# Set up widgets 
text = TextInput(title="title", value='my sine wave') 
text2 = TextInput(title="size", value='6') 
text3 = TextInput(title="color", value='red') 
offset = Slider(title="offset", value=0.0, start=-5.0, end=5.0, step=0.1) 
amplitude = Slider(title="amplitude", value=1.0, start=-5.0, end=5.0) 
phase = Slider(title="phase", value=0.0, start=0.0, end=2*np.pi) 
freq = Slider(title="frequency", value=1.0, start=0.1, end=5.1) 

# Set up plot 
plot = figure(plot_height=400, plot_width=400, title="my sine wave", 
       tools="crosshair,pan,reset,save,wheel_zoom", 
       x_range=[0, 4*np.pi], y_range=[-2.5, 2.5]) 

r = plot.circle('x', 'y', source=source, size=int(text2.value), line_alpha=0.6, color = text3.value, legend = 'test') 
glyph = r.glyph 

# Set up callbacks 
def update_title(attrname, old, new): 
    plot.title.text = text.value 

text.on_change('value', update_title) 

def update_size(attrname, old, new): 
    glyph.size = int(text2.value)  

text2.on_change('value', update_size) 

def update_color(attrname, old, new): 
    glyph.fill_color = text3.value 


text3.on_change('value', update_color) 

def update_data(attrname, old, new): 

    # Get the current slider values 
    a = amplitude.value 
    b = offset.value 
    w = phase.value 
    k = freq.value 

    # Generate the new curve 
    x = np.linspace(0, 4*np.pi, N) 
    y = a*np.sin(k*x + w) + b 

    source.data = dict(x=x, y=y) 

for w in [offset, amplitude, phase, freq]: 
    w.on_change('value', update_data) 


# Set up layouts and add to document 
inputs = widgetbox(text, text2, text3, offset, amplitude, phase, freq) 
plot.legend.location = "top_left" 
plot.legend.click_policy="hide" 
curdoc().add_root(row(inputs, plot, width=800)) 
curdoc().title = "Sliders" 

回答

0

如果更改大小,則不會立即產生任何結果。但是如果你稍後做了另一個改變(例如擦洗其中一個滑塊),那麼尺寸會更新,所以這肯定是某種錯誤。我建議在提出問題的GitHub:

http://github.com/bokeh/bokeh/issues

與此同時,存儲在CDS規模解決該問題的工作:

# Set up data 
N = 200 
x = np.linspace(0, 4*np.pi, N) 
y = np.sin(x) 
s = np.ones_like(y) * 6 
source = ColumnDataSource(data=dict(x=x, y=y, size=s)) 

然後在字形調用中使用的大小列:

r = plot.circle('x', 'y', size='size', source=source, 
       line_alpha=0.6, color = text3.value, legend = 'test') 

最後改變的回調,而不是更新源:

def update_size(attrname, old, new): 
    source.data['size'] = np.ones_like(y) * int(text2.value) 
+0

不錯的修復!同時,我將這個bug發佈到github上。 – cuxcrider