title: How do I make a line graph from a dataframe in bokeh?
body: <p>I'm reading a .csv file in bokeh which has two columns: one for date and one for the values corresponding to that date. I'm trying to make a line graph with the dates on the x axis and the values on y, but it isn't working. Any ideas?</p>
  
  <p>CODE:</p>
  
  <pre><code>import pandas as pd
  from bokeh.plotting import figure, output_file, show
  from bokeh.models import ColumnDataSource
  from datetime import datetime
  from bokeh.palettes import Spectral3
  
  output_file('output.html')
  
  df = pd.read_csv('speedgraphak29.csv')
  p = figure(x_axis_type="datetime")
  p.line(x=df.dates, y=df.windspeed, line_width=2)
  
  
  show(p)
  </code></pre>
  
  <p>It's returning an empty graph. What should I do?</p>