changing layout breaks graph

On Sun, Jan 22, 2017 at 12:55 AM, lukas.girsch@gmail.com wrote:

Hi, iam trying to change a graph when a button is clicked.

this is what the two charts should look like

But when i try to change the lower graph, the upper one just disappears

This is the code i use to generate the layout:

curdoc().add_root(desc)
# set up layout
c1 = column(stock, days)
c2 = column(ts1)
r1 = row(c1, c2)
curdoc().add_root(r1)

cCalc = column(select_varianzred, daysToKeepTheStock, iterations, button)
c2Calc = column(hg1)
r2 = row(cCalc, c2Calc)
curdoc().add_root(r2)

(having just one add_root doesnt change the outcome)

and this is the code is use to replace the graph:

hg_ = figure(title="Histogram", id='histog', plot_width=900, plot_height=300, tools=tools)
hist_, edges_ = np.histogram(mc_returns, density=True, bins=50)
hg_.quad(top=hist_, bottom=0, left=edges_[:-1], right=edges_[1:])

r2.children[1] =hg_

iam thankful for any input

changing layout (replacing entire objects) often doesn’t work and is a known bug. This is targeted to be fixed in bokeh 0.12.5. Currently the workaround is to modify the elements of a layout instead.

Mateusz

bokeh version 12.4

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On Sunday, January 22, 2017 at 12:55:58 AM UTC+1, Lukas Girsch wrote:

Hi, iam trying to change a graph when a button is clicked.

this is what the two charts should look like

But when i try to change the lower graph, the upper one just disappears

This is the code i use to generate the layout:

curdoc().add_root(desc)
# set up layout
c1 = column(stock, days)
c2 = column(ts1)
r1 = row(c1, c2)
curdoc().add_root(r1)

cCalc = column(select_varianzred, daysToKeepTheStock, iterations, button)
c2Calc = column(hg1)
r2 = row(cCalc, c2Calc)
curdoc().add_root(r2)

(having just one add_root doesnt change the outcome)

and this is the code is use to replace the graph:

hg_ = figure(title="Histogram", id='histog', plot_width=900, plot_height=300, tools=tools)
hist_, edges_ = np.histogram(mc_returns, density=True, bins=50)
hg_.quad(top=hist_, bottom=0, left=edges_[:-1], right=edges_[1:])

r2.children[1] =hg_

iam thankful for any input

bokeh version 12.4

On Thursday, April 13, 2017 at 4:23:21 AM UTC-7, akasolace wrote:

Hello,

I am using bokeh 12.5 and I am facing the same bug. did you found a workaround ?

On Sunday, January 22, 2017 at 12:55:58 AM UTC+1, Lukas Girsch wrote:

Hi, iam trying to change a graph when a button is clicked.

this is what the two charts should look like

But when i try to change the lower graph, the upper one just disappears

This is the code i use to generate the layout:

curdoc().add_root(desc)
# set up layout
c1 = column(stock, days)
c2 = column(ts1)
r1 = row(c1, c2)
curdoc().add_root(r1)

cCalc = column(select_varianzred, daysToKeepTheStock, iterations, button)
c2Calc = column(hg1)
r2 = row(cCalc, c2Calc)
curdoc().add_root(r2)

(having just one add_root doesnt change the outcome)

and this is the code is use to replace the graph:

hg_ = figure(title="Histogram", id='histog', plot_width=900, plot_height=300, tools=tools)
hist_, edges_ = np.histogram(mc_returns, density=True, bins=50)
hg_.quad(top=hist_, bottom=0, left=edges_[:-1], right=edges_[1:])

r2.children[1] =hg_

iam thankful for any input

bokeh version 12.4

On Friday, April 14, 2017 at 3:49:05 AM UTC+2, Tyler Nickerson wrote:

Hey,

The issue in Lukas’ example appears to be caused by adding multiple roots to the current document to create a “layout”. I can’t say if displaying multiple roots is an intended feature of Bokeh, but it seems counter intuitive and does break the figures in previously added roots. So, I would suggest avoiding this pattern. In Lukas’ example, this would be one way of combining the rows into a single layout:

layout = column(r1, r2)
curdoc().add_root(layout)

If you are running into a different issue, sharing a small reproducible example will make it easier for others to help.

Regards,
Tyler

On Thursday, April 13, 2017 at 4:23:21 AM UTC-7, akasolace wrote:

Hello,

I am using bokeh 12.5 and I am facing the same bug. did you found a workaround ?

On Sunday, January 22, 2017 at 12:55:58 AM UTC+1, Lukas Girsch wrote:

Hi, iam trying to change a graph when a button is clicked.

this is what the two charts should look like

But when i try to change the lower graph, the upper one just disappears

This is the code i use to generate the layout:

curdoc().add_root(desc)
# set up layout
c1 = column(stock, days)
c2 = column(ts1)
r1 = row(c1, c2)
curdoc().add_root(r1)

cCalc = column(select_varianzred, daysToKeepTheStock, iterations, button)
c2Calc = column(hg1)
r2 = row(cCalc, c2Calc)
curdoc().add_root(r2)

(having just one add_root doesnt change the outcome)

and this is the code is use to replace the graph:

hg_ = figure(title="Histogram", id='histog', plot_width=900, plot_height=300, tools=tools)
hist_, edges_ = np.histogram(mc_returns, density=True, bins=50)
hg_.quad(top=hist_, bottom=0, left=edges_[:-1], right=edges_[1:])

r2.children[1] =hg_

iam thankful for any input

bokeh version 12.4

On Wed, Apr 19, 2017 at 5:26 AM, akasolace thesabry@gmail.com wrote:

Hello, sorry for the late answer but I am just back from holiday

On my side I have a single root
curdoc().add_root(rows)

``

Then I have a widget on_change method that does something like:
def update(attr, old, new):
p = Bar(…)
rows[0][0] = p

``

the updated graph is displayed along with the first column of the layout but the second column of the layout becomes blank

On Friday, April 14, 2017 at 3:49:05 AM UTC+2, Tyler Nickerson wrote:

Hey,

The issue in Lukas’ example appears to be caused by adding multiple roots to the current document to create a “layout”. I can’t say if displaying multiple roots is an intended feature of Bokeh, but it seems counter intuitive and does break the figures in previously added roots. So, I would suggest avoiding this pattern. In Lukas’ example, this would be one way of combining the rows into a single layout:

layout = column(r1, r2)
curdoc().add_root(layout)

If you are running into a different issue, sharing a small reproducible example will make it easier for others to help.

Regards,
Tyler

On Thursday, April 13, 2017 at 4:23:21 AM UTC-7, akasolace wrote:

Hello,

I am using bokeh 12.5 and I am facing the same bug. did you found a workaround ?

On Sunday, January 22, 2017 at 12:55:58 AM UTC+1, Lukas Girsch wrote:

Hi, iam trying to change a graph when a button is clicked.

this is what the two charts should look like

But when i try to change the lower graph, the upper one just disappears

This is the code i use to generate the layout:

curdoc().add_root(desc)
# set up layout
c1 = column(stock, days)
c2 = column(ts1)
r1 = row(c1, c2)
curdoc().add_root(r1)

cCalc = column(select_varianzred, daysToKeepTheStock, iterations, button)
c2Calc = column(hg1)
r2 = row(cCalc, c2Calc)
curdoc().add_root(r2)

(having just one add_root doesnt change the outcome)

and this is the code is use to replace the graph:

hg_ = figure(title="Histogram", id='histog', plot_width=900, plot_height=300, tools=tools)
hist_, edges_ = np.histogram(mc_returns, density=True, bins=50)
hg_.quad(top=hist_, bottom=0, left=edges_[:-1], right=edges_[1:])

r2.children[1] =hg_

iam thankful for any input

bokeh version 12.4

–

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On Wednesday, April 19, 2017 at 5:46:21 PM UTC+2, Tyler Nickerson wrote:

No worries. Nothing looks wrong from the code snippets you’ve provided. It looks like rows is a nested layout though. What does your full layout look like? And is there any chance that you’ve replaced a layout object containing two plots with a single plot in the line rows[0][0] = p?

If you are able to provide a reproducible example of the issue, it will make tracking down the source of the issue easier.

Regards,
Tyler

​

On Wed, Apr 19, 2017 at 5:26 AM, akasolace thes...@gmail.com wrote:

Hello, sorry for the late answer but I am just back from holiday

On my side I have a single root
curdoc().add_root(rows)

``

Then I have a widget on_change method that does something like:
def update(attr, old, new):
p = Bar(…)
rows[0][0] = p

``

the updated graph is displayed along with the first column of the layout but the second column of the layout becomes blank

On Friday, April 14, 2017 at 3:49:05 AM UTC+2, Tyler Nickerson wrote:

Hey,

The issue in Lukas’ example appears to be caused by adding multiple roots to the current document to create a “layout”. I can’t say if displaying multiple roots is an intended feature of Bokeh, but it seems counter intuitive and does break the figures in previously added roots. So, I would suggest avoiding this pattern. In Lukas’ example, this would be one way of combining the rows into a single layout:

layout = column(r1, r2)
curdoc().add_root(layout)

If you are running into a different issue, sharing a small reproducible example will make it easier for others to help.

Regards,
Tyler

On Thursday, April 13, 2017 at 4:23:21 AM UTC-7, akasolace wrote:

Hello,

I am using bokeh 12.5 and I am facing the same bug. did you found a workaround ?

On Sunday, January 22, 2017 at 12:55:58 AM UTC+1, Lukas Girsch wrote:

Hi, iam trying to change a graph when a button is clicked.

this is what the two charts should look like

But when i try to change the lower graph, the upper one just disappears

This is the code i use to generate the layout:

curdoc().add_root(desc)
# set up layout
c1 = column(stock, days)
c2 = column(ts1)
r1 = row(c1, c2)
curdoc().add_root(r1)

cCalc = column(select_varianzred, daysToKeepTheStock, iterations, button)
c2Calc = column(hg1)
r2 = row(cCalc, c2Calc)
curdoc().add_root(r2)

(having just one add_root doesnt change the outcome)

and this is the code is use to replace the graph:

hg_ = figure(title="Histogram", id='histog', plot_width=900, plot_height=300, tools=tools)
hist_, edges_ = np.histogram(mc_returns, density=True, bins=50)
hg_.quad(top=hist_, bottom=0, left=edges_[:-1], right=edges_[1:])

r2.children[1] =hg_

iam thankful for any input

bokeh version 12.4

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