Adding Color to Plots not working with ColumnDataSource

pratikkgandhi · January 8, 2017, 5:54am

Hello,

Can anyone help me out here? Am I doing something wrong? I believe ColumnDataSource behaves differently if plotting multiple plots in one plot, correct?

source = ColumnDataSource(data=dict(Dt=,Census=,CountAtStart=))

plot = figure(plot_width=1100, plot_height=600, x_axis_type = ‘datetime’)

CAHplot.line(x=‘Dt’, y=‘Census’, source=source, line_dash=[4, 4], line_color=‘purple’, alpha = 0.8, line_width=2, legend=‘Predicted’)

CAHplot.line(x=‘Dt’, y=‘CountAtStart’, source=source, line_color=‘blue’, alpha = 0.3, line_width=2, legend=‘Actual’)

Thank you,

Pratik

Bryan · January 8, 2017, 6:20am

I would not say that is correct, at least not any way I can interpret it. ColumnDataSources don't know how many glyphs or plots they are used in, so there is no way for them to behave differently based on that. What is your actual question? You haven't stated what is happening vs what you are expecting to happen, so it's hard to know what you are wanting help with. Offhand, at least in the code you have supplied, your ColumnDataSource is completely empty, so I would not expect anything to be plotted.

Thanks,

Bryan

···

On Jan 7, 2017, at 11:54 PM, [email protected] wrote:

Hello,

Can anyone help me out here? Am I doing something wrong? I believe ColumnDataSource behaves differently if plotting multiple plots in one plot, correct?

source = ColumnDataSource(data=dict(Dt=,Census=,CountAtStart=))

plot = figure(plot_width=1100, plot_height=600, x_axis_type = 'datetime')

CAHplot.line(x='Dt', y='Census', source=source, line_dash=[4, 4], line_color='purple', alpha = 0.8, line_width=2, legend='Predicted')
CAHplot.line(x='Dt', y='CountAtStart', source=source, line_color='blue', alpha = 0.3, line_width=2, legend='Actual')

Thank you,
Pratik

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pratikkgandhi · January 8, 2017, 1:59pm

Hi Bryan,

So the ColumnDataSource here is an example just to show that it is ColumnDataSource. It has some values, that are selected based on the Select option. May be the following will be more clear?

source = ColumnDataSource(data=dict(Dt=,Census=,CountAtStart=))

current = df[df['Census'] <= 25].dropna()

**        source.data = {
'Dt' : current['Dt'],
'Census' : current['Census'],
'CountAtStart' : current['CountAtStart'],
}**

CAHplot = figure(plot_width=1100, plot_height=600, x_axis_type = ‘datetime’)

CAHplot.line(x=‘Dt’, y=‘Census’, source=source, line_dash=[4, 4], line_color=‘purple’, alpha = 0.8, line_width=2, legend=‘Predicted’)

CAHplot.line(x=‘Dt’, y=‘CountAtStart’, source=source, line_color=‘blue’, alpha = 0.3, line_width=2, legend=‘Actual’)

And the graph should look like the attachment here.

Let me know if this woulf help or not. Thank you!

···

On Sunday, 8 January 2017 01:20:58 UTC-5, Bryan Van de ven wrote:

I would not say that is correct, at least not any way I can interpret it. ColumnDataSources don’t know how many glyphs or plots they are used in, so there is no way for them to behave differently based on that. What is your actual question? You haven’t stated what is happening vs what you are expecting to happen, so it’s hard to know what you are wanting help with. Offhand, at least in the code you have supplied, your ColumnDataSource is completely empty, so I would not expect anything to be plotted.

Thanks,

Bryan

On Jan 7, 2017, at 11:54 PM, [email protected] wrote:

Hello,

Can anyone help me out here? Am I doing something wrong? I believe ColumnDataSource behaves differently if plotting multiple plots in one plot, correct?

source = ColumnDataSource(data=dict(Dt=,Census=,CountAtStart=))

plot = figure(plot_width=1100, plot_height=600, x_axis_type = ‘datetime’)

CAHplot.line(x=‘Dt’, y=‘Census’, source=source, line_dash=[4, 4], line_color=‘purple’, alpha = 0.8, line_width=2, legend=‘Predicted’)

CAHplot.line(x=‘Dt’, y=‘CountAtStart’, source=source, line_color=‘blue’, alpha = 0.3, line_width=2, legend=‘Actual’)

Thank you,

Pratik

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Sebastien_Roche · January 12, 2017, 5:17pm

from bokeh.plotting import Figure, output_file

from bokeh.models import ColumnDataSource

from bokeh.resources import CDN

from bokeh.embed import file_html

source = ColumnDataSource(data={‘x’:range(10),‘y’:range(10),‘z’:range(10)[::-1]})

fig = Figure(plot_width=400,plot_height=400)

fig.line(x=‘x’,y=‘y’,line_color=‘purple’,source=source,line_dash=[4,4],alpha=0.8,line_width=2,legend=‘Predicted’)

fig.line(x=‘x’,y=‘z’,source=source,line_color=‘blue’,alpha=0.3,line_width=2,legend=‘Actual’)

outfile=open(‘colotest.html’,‘w’)

outfile.write(file_html(fig,CDN,‘test’))

outfile.close()

``

This simple example works fine, how does your plot look?

pratikkgandhi · January 12, 2017, 9:18pm

Thank you for your example. It is working now.

···

On Thursday, 12 January 2017 12:17:19 UTC-5, [email protected] wrote: