Error with Bokeh Histogram

andrefilipemb · February 12, 2016, 7:44pm

Hi Everyone

I am trying to create a Histogram with Bokeh and I’m getting the following error. The histogram is completely wrong.

For example

I have this list:

[1205.0, 2527.0, 1745.0, 1556.0, 493.0, 2276.0, 556.0, 1928.0, 2641.0, 1897.0, 1891.0, 1545.0, 1307.0, 1692.0, 1543.0, 1282.0, 775.0, 2032.0, 1240.0, 473.0, 1612.0, 605.0, 327.0, 946.0, 541.0, 1539.0, 529.0, 628.0, 1453.0, 297.0, 703.0, 269.0, 751.0, 245.0, 1182.0, 515.0, 435.0, 383.0, 457.0, 730.0, 614.0, 414.0, 324.0, 776.0, 611.0, 544.0, 538.0, 579.0, 806.0, 459.0, 458.0, 626.0, 621.0, 544.0, 535.0, 385.0, 401.0, 614.0, 665.0, 488.0, 172.0, 142.0, 37.0, 453.0, 355.0, 22.0, 502.0, 273.0, 720.0, 582.0, 198.0, 198.0, 597.0, 516.0, 815.0, 402.0, 605.0, 711.0, 614.0, 468.0]

And when I try to create a histogram:


hist = Histogram(val)
show(hist)

I get: (the Y-axis is completely wrong) ... How can I solve this?

Thanks

<img src="//bokeh-discourse-uploads.s3.dualstack.us-east-1.amazonaws.com/original/1X/e4642965fd16100d986160c2e34bd6e965008440.png">

Correct Histogram generated using plt.hist() function

<img src="//bokeh-discourse-uploads.s3.dualstack.us-east-1.amazonaws.com/original/1X/947bd76b5197041ce6e23cd3c0205e2d8b6ba7b7.png">

Bryan · February 12, 2016, 7:57pm

That seems like a bug, can you file a GH issue with this information?

In the mean time it's still fairly easy to create histograms with bokeh.plotting and quads, with something like:

import numpy as np
from bokeh.plotting import figure, show, output_file

hist, edges = np.histogram(MY_DATA, density=True, bins=50)

  p = figure()
  p.quad(top=hist, bottom=0, left=edges[:-1], right=edges[1:])

  show(p)

Thanks,

Bryan

···

On Feb 12, 2016, at 1:44 PM, [email protected] wrote:

Hi Everyone

I am trying to create a Histogram with Bokeh and I'm getting the following error. The histogram is completely wrong.

For example

I have this list:

[1205.0, 2527.0, 1745.0, 1556.0, 493.0, 2276.0, 556.0, 1928.0, 2641.0, 1897.0, 1891.0, 1545.0, 1307.0, 1692.0, 1543.0, 1282.0, 775.0, 2032.0, 1240.0, 473.0, 1612.0, 605.0, 327.0, 946.0, 541.0, 1539.0, 529.0, 628.0, 1453.0, 297.0, 703.0, 269.0, 751.0, 245.0, 1182.0, 515.0, 435.0, 383.0, 457.0, 730.0, 614.0, 414.0, 324.0, 776.0, 611.0, 544.0, 538.0, 579.0, 806.0, 459.0, 458.0, 626.0, 621.0, 544.0, 535.0, 385.0, 401.0, 614.0, 665.0, 488.0, 172.0, 142.0, 37.0, 453.0, 355.0, 22.0, 502.0, 273.0, 720.0, 582.0, 198.0, 198.0, 597.0, 516.0, 815.0, 402.0, 605.0, 711.0, 614.0, 468.0]

And when I try to create a histogram:

hist = Histogram(val)
show(hist)

I get: (the Y-axis is completely wrong) ... How can I solve this?

Thanks

<Auto Generated Inline Image 1.png>

Correct Histogram generated using plt.hist() function

<Auto Generated Inline Image 2.png>

--
You received this message because you are subscribed to the Google Groups "Bokeh Discussion - Public" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
To post to this group, send email to [email protected].
To view this discussion on the web visit https://groups.google.com/a/continuum.io/d/msgid/bokeh/85ec794a-5b02-4486-88d5-435a51244d1f%40continuum.io\.
For more options, visit https://groups.google.com/a/continuum.io/d/optout\.
<Auto Generated Inline Image 1.png><Auto Generated Inline Image 2.png>

Bryan · February 12, 2016, 8:00pm

I forgot an output_file in the example code. Also here is the output with your data and 20 bins:

···

On Feb 12, 2016, at 1:57 PM, Bryan Van de Ven [email protected] wrote:

That seems like a bug, can you file a GH issue with this information?

In the mean time it’s still fairly easy to create histograms with bokeh.plotting and quads, with something like:

import numpy as np
from bokeh.plotting import figure, show, output_file

hist, edges = np.histogram(MY_DATA, density=True, bins=50)

p = figure()
p.quad(top=hist, bottom=0, left=edges[:-1], right=edges[1:])

show(p)

Thanks,

Bryan

On Feb 12, 2016, at 1:44 PM, [email protected] wrote:

Hi Everyone

I am trying to create a Histogram with Bokeh and I’m getting the following error. The histogram is completely wrong.

For example

I have this list:

[1205.0, 2527.0, 1745.0, 1556.0, 493.0, 2276.0, 556.0, 1928.0, 2641.0, 1897.0, 1891.0, 1545.0, 1307.0, 1692.0, 1543.0, 1282.0, 775.0, 2032.0, 1240.0, 473.0, 1612.0, 605.0, 327.0, 946.0, 541.0, 1539.0, 529.0, 628.0, 1453.0, 297.0, 703.0, 269.0, 751.0, 245.0, 1182.0, 515.0, 435.0, 383.0, 457.0, 730.0, 614.0, 414.0, 324.0, 776.0, 611.0, 544.0, 538.0, 579.0, 806.0, 459.0, 458.0, 626.0, 621.0, 544.0, 535.0, 385.0, 401.0, 614.0, 665.0, 488.0, 172.0, 142.0, 37.0, 453.0, 355.0, 22.0, 502.0, 273.0, 720.0, 582.0, 198.0, 198.0, 597.0, 516.0, 815.0, 402.0, 605.0, 711.0, 614.0, 468.0]

And when I try to create a histogram:

hist = Histogram(val)
show(hist)

I get: (the Y-axis is completely wrong) … How can I solve this?

Thanks

<Auto Generated Inline Image 1.png>

Correct Histogram generated using plt.hist() function

<Auto Generated Inline Image 2.png>

–
You received this message because you are subscribed to the Google Groups “Bokeh Discussion - Public” group.
To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
To post to this group, send email to [email protected].
To view this discussion on the web visit https://groups.google.com/a/continuum.io/d/msgid/bokeh/85ec794a-5b02-4486-88d5-435a51244d1f%40continuum.io.
For more options, visit https://groups.google.com/a/continuum.io/d/optout.
<Auto Generated Inline Image 1.png><Auto Generated Inline Image 2.png>

andrefilipemb · February 13, 2016, 10:26am

Thank you Bryan

···

On Friday, February 12, 2016 at 6:00:23 PM UTC-2, Bryan Van de ven wrote:

I forgot an output_file in the example code. Also here is the output with your data and 20 bins:

968×960 36.9 KB
On Feb 12, 2016, at 1:57 PM, Bryan Van de Ven [email protected] wrote:

That seems like a bug, can you file a GH issue with this information?

In the mean time it’s still fairly easy to create histograms with bokeh.plotting and quads, with something like:
import numpy as np
from bokeh.plotting import figure, show, output_file

hist, edges = np.histogram(MY_DATA, density=True, bins=50)

p = figure()
p.quad(top=hist, bottom=0, left=edges[:-1], right=edges[1:])

show(p)
Thanks,

Bryan

On Feb 12, 2016, at 1:44 PM, [email protected] wrote:

Hi Everyone

I am trying to create a Histogram with Bokeh and I’m getting the following error. The histogram is completely wrong.

For example

I have this list:

[1205.0, 2527.0, 1745.0, 1556.0, 493.0, 2276.0, 556.0, 1928.0, 2641.0, 1897.0, 1891.0, 1545.0, 1307.0, 1692.0, 1543.0, 1282.0, 775.0, 2032.0, 1240.0, 473.0, 1612.0, 605.0, 327.0, 946.0, 541.0, 1539.0, 529.0, 628.0, 1453.0, 297.0, 703.0, 269.0, 751.0, 245.0, 1182.0, 515.0, 435.0, 383.0, 457.0, 730.0, 614.0, 414.0, 324.0, 776.0, 611.0, 544.0, 538.0, 579.0, 806.0, 459.0, 458.0, 626.0, 621.0, 544.0, 535.0, 385.0, 401.0, 614.0, 665.0, 488.0, 172.0, 142.0, 37.0, 453.0, 355.0, 22.0, 502.0, 273.0, 720.0, 582.0, 198.0, 198.0, 597.0, 516.0, 815.0, 402.0, 605.0, 711.0, 614.0, 468.0]

And when I try to create a histogram:

hist = Histogram(val)
show(hist)

I get: (the Y-axis is completely wrong) … How can I solve this?

Thanks

<Auto Generated Inline Image 1.png>

Correct Histogram generated using plt.hist() function

<Auto Generated Inline Image 2.png>

–
You received this message because you are subscribed to the Google Groups “Bokeh Discussion - Public” group.
To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
To post to this group, send email to [email protected].
To view this discussion on the web visit https://groups.google.com/a/continuum.io/d/msgid/bokeh/85ec794a-5b02-4486-88d5-435a51244d1f%40continuum.io.
For more options, visit https://groups.google.com/a/continuum.io/d/optout.
<Auto Generated Inline Image 1.png><Auto Generated Inline Image 2.png>

Paul_Morrison · March 24, 2016, 6:59pm

I ran into this today. Here’s the new issue:

github.com/bokeh/bokeh

bokeh.charts.Histogram incorrect output

opened 06:58PM - 24 Mar 16 UTC

closed 07:27PM - 24 Mar 16 UTC

pauljmorrison

type: bug reso: working as intended

I'm running into an issue where `bokeh.charts.Histogram` is showing incorrect ou…tput. This issue is discussed here: https://groups.google.com/a/continuum.io/d/topic/bokeh/JTsX9Hx-1sY/discussion This impacts Bokeh 0.11.1. Here's a minimum working example that should illustrate the problem: ``` import numpy as np from bokeh.plotting import figure, show from bokeh.io import hplot, output_file from bokeh.charts import Histogram from bokeh import __version__ print(__version__) output_file('mwe.html') plot_list = [] a_var = np.random.normal(500,6,500) pcharts = Histogram(a_var) plot_list.append(pcharts) hist, edges = np.histogram(a_var) ppltting = figure() ppltting.quad(top=hist, bottom=0, left=edges[:-1], right=edges[1:]) plot_list.append(ppltting) show(hplot(*plot_list)) ``` Here is the output. ![mwe](https://cloud.githubusercontent.com/assets/11462206/14027997/c79b7726-f1d0-11e5-84c0-8d279211e1f5.png) Thanks!

Thanks!

Paul

···

On Saturday, February 13, 2016 at 5:26:37 AM UTC-5, [email protected] wrote:

Thank you Bryan

On Friday, February 12, 2016 at 6:00:23 PM UTC-2, Bryan Van de ven wrote:

I forgot an output_file in the example code. Also here is the output with your data and 20 bins:

968×960 36.9 KB
On Feb 12, 2016, at 1:57 PM, Bryan Van de Ven [email protected] wrote:

That seems like a bug, can you file a GH issue with this information?

In the mean time it’s still fairly easy to create histograms with bokeh.plotting and quads, with something like:
import numpy as np
from bokeh.plotting import figure, show, output_file

hist, edges = np.histogram(MY_DATA, density=True, bins=50)

p = figure()
p.quad(top=hist, bottom=0, left=edges[:-1], right=edges[1:])

show(p)
Thanks,

Bryan

On Feb 12, 2016, at 1:44 PM, [email protected] wrote:

Hi Everyone

I am trying to create a Histogram with Bokeh and I’m getting the following error. The histogram is completely wrong.

For example

I have this list:

[1205.0, 2527.0, 1745.0, 1556.0, 493.0, 2276.0, 556.0, 1928.0, 2641.0, 1897.0, 1891.0, 1545.0, 1307.0, 1692.0, 1543.0, 1282.0, 775.0, 2032.0, 1240.0, 473.0, 1612.0, 605.0, 327.0, 946.0, 541.0, 1539.0, 529.0, 628.0, 1453.0, 297.0, 703.0, 269.0, 751.0, 245.0, 1182.0, 515.0, 435.0, 383.0, 457.0, 730.0, 614.0, 414.0, 324.0, 776.0, 611.0, 544.0, 538.0, 579.0, 806.0, 459.0, 458.0, 626.0, 621.0, 544.0, 535.0, 385.0, 401.0, 614.0, 665.0, 488.0, 172.0, 142.0, 37.0, 453.0, 355.0, 22.0, 502.0, 273.0, 720.0, 582.0, 198.0, 198.0, 597.0, 516.0, 815.0, 402.0, 605.0, 711.0, 614.0, 468.0]

And when I try to create a histogram:

hist = Histogram(val)
show(hist)

I get: (the Y-axis is completely wrong) … How can I solve this?

Thanks

<Auto Generated Inline Image 1.png>

Correct Histogram generated using plt.hist() function

<Auto Generated Inline Image 2.png>

–
You received this message because you are subscribed to the Google Groups “Bokeh Discussion - Public” group.
To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
To post to this group, send email to [email protected].
To view this discussion on the web visit https://groups.google.com/a/continuum.io/d/msgid/bokeh/85ec794a-5b02-4486-88d5-435a51244d1f%40continuum.io.
For more options, visit https://groups.google.com/a/continuum.io/d/optout.
<Auto Generated Inline Image 1.png><Auto Generated Inline Image 2.png>