"Ordinal must be >= 1" with SuplotHost and dates

Hi matplotlib_users !

I’m David from Berlin, and believe I’m experiencing some problem with the SubplotHost module:

I’m generating graphs from hudge databases of cpu and ethernet statistics,
and I wanted to mix several graphs concerning ethernet statistics in the same figure,

with time as x axis, and bytes-in, bytes-out, packets-in, packets-out and number of
collisions as three different y axes, with three different scale.

I took the inspiration from

for the x axes and from
http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes2.html

for the y axes

The following code is a synthetic reproduction of the problem I’m experiencing (it is also attached):

from matplotlib.dates import date2num
from matplotlib import pyplot
from matplotlib import pylab
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
from datetime import datetime

dates = [ 733581.20833333337, 733581.20837962965, 733581.20842592593, 733581.20847222221, 733581.20851851848,
733581.20855324075, 733581.20858796302, 733581.2086342593, 733581.20866898145, 733581.20871527772]
rxB = [054L, 130L, 144L, 54L, 36L, 9L, 35L, 43L, 85L, 43L]
txB = [4L, 9L, 9L, 5L, 4L, 4L, 4L, 5L, 6L, 5L]
rxP = [77, 228, 251, 112, 77, 42, 75, 97, 147, 91]
txP = [61, 177, 188, 90, 61, 40, 64, 76, 113, 77]
col = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0]

ethPlot = pyplot
fig = ethPlot.figure()
host = SubplotHost(fig, 111)

host.set_ylabel(“kB/s”)
host.set_xlabel(“Time”)

par1 = host.twinx()
par2 = host.twinx()

par1.set_ylabel(“Packets/s”)

par2.axis[“right”].set_visible(False)

offset = 60, 0
new_axisline = par2.get_grid_helper().new_fixed_axis
par2.axis[“right2”] = new_axisline(loc=“right”,
axes=par2,
offset=offset)

par2.axis[“right2”].label.set_visible(True)
par2.axis[“right2”].set_label(“Collisions”)

par1.set_ylim(0, 6000)
par2.set_ylim(0, 7000)

host.axis([ dates[0], ( dates[0] + 0.041 ), -7000, 7000])
par1.axis([ dates[0], ( dates[0] + 0.041 ), -10000, 10000])
par2.axis([ dates[0], ( dates[0] + 0.041 ), -700, 700])

fig.add_axes(host)
ethPlot.subplots_adjust(right=0.75)

drawRxByt, = host.plot_date(dates, rxB, ‘g’, tz=None, xdate=True, ydate=False, label=“kB/s in”)
drawTxByt, = host.plot_date(dates, txB, ‘b’, tz=None, xdate=True, ydate=False, label=“kB/s out”)
drawRxPaq, = par1.plot_date(dates, rxP, ‘m’, tz=None, xdate=True, ydate=False, label=“packets/s in”)
drawTxPaq, = par1.plot_date(dates, txP, ‘y’, tz=None, xdate=True, ydate=False, label=“packets/s out”)
drawColls, = par2.plot_date(dates, col, ‘r’, tz=None, xdate=True, ydate=False, label=“collisions”)

fig.autofmt_xdate()

host.set_xlabel(“Time”)
host.set_ylabel(“kB/s”)
par1.set_ylabel(“Packets/s”)

host.legend()

host.axis[“left”].label.set_color(drawRxByt.get_color())
host.axis[“left”].label.set_color(drawTxByt.get_color())
par1.axis[“right”].label.set_color(drawRxPaq.get_color())
par1.axis[“right”].label.set_color(drawtxPaq.get_color())
par2.axis[“right2”].label.set_color(drawColls.get_color())

ethPlot.draw()
pylab.savefig( ‘./test.png’, dpi=(640/8))

Maybe I do something wrong somewhere here, but other scripts that do the same for a single graphwork like a charm. So it’s not a question of dataType or something. To compare with a working code, here is the first version of the fuction that does the job on single graphs without any problem :

def drawEthGraph(filename, hdates, rxP, txP, rxB, txB, col):

ethPlot = pyplot
fig = ethPlot.figure()
ax = fig.add_subplot(111)
ax.plot_date(hdates, rxP, ‘g’, None, True, False)
ax.plot_date(hdates, txP, ‘b’, None, True, False)
ax.plot_date(hdates, rxB, ‘g’, None, True, False)

ax.plot_date(hdates, txB, ‘b’, None, True, False)
ax.plot_date(hdates, col, ‘r’, None, True, False)
ax.axis([ hdates[0], ( hdates[0] + 0.042 ), -7000, 7000])
ax.grid(True)
fig.autofmt_xdate()

pylab.savefig( filename, dpi=(640/8))

I
don’t think I understand the whole process of generation, but I thought
at least at the beginnig I was having a good feeling with this API.
Now I wonder how to go around this. Maybe you’ll have an idea :-o

Best regards

DvD

draw_eth_test.py (2.31 KB)

I can reproduce the error with the svn version.
It seems that the problem is not SubplotHost specific, i.e., you have
same problem if you use mpl's original axes with twinx.

I think it has something to do with the axes sharing in general.
Preventing autoscale of xaxis suppress the error.

host.set_autoscalex_on(False)
par1.set_autoscalex_on(False)
par2.set_autoscalex_on(False)

But you have to manually adjust the x-limits later

par1.set_xlim(dates[0], dates[-1])

However, autofmt_xdata does not work. And I guess this is a bug in the
SubplotHost. I may take a more look later today.

Regards,

-JJ

···

On Sun, Jun 28, 2009 at 1:34 PM, David GUERINEAU<david@...2667...> wrote:

Hi matplotlib_users !

I'm David from Berlin, and believe I'm experiencing some problem with the
SubplotHost module:

I'm generating graphs from hudge databases of cpu and ethernet statistics,
and I wanted to mix several graphs concerning ethernet statistics in the
same figure,
with time as x axis, and bytes-in, bytes-out, packets-in, packets-out and
number of
collisions as three different y axes, with three different scale.

I took the inspiration from

for the x axes and from

http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes2.html
for the y axes

The following code is a synthetic reproduction of the problem I'm
experiencing (it is also attached):

from matplotlib.dates import date2num
from matplotlib import pyplot
from matplotlib import pylab
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
from datetime import datetime

dates = [ 733581.20833333337, 733581.20837962965, 733581.20842592593,
733581.20847222221, 733581.20851851848,
733581.20855324075, 733581.20858796302, 733581.2086342593,
733581.20866898145, 733581.20871527772]
rxB = [054L, 130L, 144L, 54L, 36L, 9L, 35L, 43L, 85L, 43L]
txB = [4L, 9L, 9L, 5L, 4L, 4L, 4L, 5L, 6L, 5L]
rxP = [77, 228, 251, 112, 77, 42, 75, 97, 147, 91]
txP = [61, 177, 188, 90, 61, 40, 64, 76, 113, 77]
col = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0]

ethPlot = pyplot
fig = ethPlot.figure()
host = SubplotHost(fig, 111)

host.set_ylabel("kB/s")
host.set_xlabel("Time")

par1 = host.twinx()
par2 = host.twinx()

par1.set_ylabel("Packets/s")

par2.axis["right"].set_visible(False)

offset = 60, 0
new_axisline = par2.get_grid_helper().new_fixed_axis
par2.axis["right2"] = new_axisline(loc="right",
axes=par2,
offset=offset)

par2.axis["right2"].label.set_visible(True)
par2.axis["right2"].set_label("Collisions")

par1.set_ylim(0, 6000)
par2.set_ylim(0, 7000)

host.axis([ dates[0], ( dates[0] + 0.041 ), -7000, 7000])
par1.axis([ dates[0], ( dates[0] + 0.041 ), -10000, 10000])
par2.axis([ dates[0], ( dates[0] + 0.041 ), -700, 700])

fig.add_axes(host)
ethPlot.subplots_adjust(right=0.75)

drawRxByt, = host.plot_date(dates, rxB, 'g', tz=None, xdate=True,
ydate=False, label="kB/s in")
drawTxByt, = host.plot_date(dates, txB, 'b', tz=None, xdate=True,
ydate=False, label="kB/s out")
drawRxPaq, = par1.plot_date(dates, rxP, 'm', tz=None, xdate=True,
ydate=False, label="packets/s in")
drawTxPaq, = par1.plot_date(dates, txP, 'y', tz=None, xdate=True,
ydate=False, label="packets/s out")
drawColls, = par2.plot_date(dates, col, 'r', tz=None, xdate=True,
ydate=False, label="collisions")

fig.autofmt_xdate()

host.set_xlabel("Time")
host.set_ylabel("kB/s")
par1.set_ylabel("Packets/s")

host.legend()

host.axis["left"].label.set_color(drawRxByt.get_color())
host.axis["left"].label.set_color(drawTxByt.get_color())
par1.axis["right"].label.set_color(drawRxPaq.get_color())
par1.axis["right"].label.set_color(drawtxPaq.get_color())
par2.axis["right2"].label.set_color(drawColls.get_color())

ethPlot.draw()
pylab.savefig( './test.png', dpi=(640/8))

Maybe I do something wrong somewhere here, but other scripts that do the
same for a single graphwork like a charm. So it's not a question of dataType
or something. To compare with a working code, here is the first version of
the fuction that does the job on single graphs without any problem :

def drawEthGraph(filename, hdates, rxP, txP, rxB, txB, col):
ethPlot = pyplot
fig = ethPlot.figure()
ax = fig.add_subplot(111)
ax.plot_date(hdates, rxP, 'g', None, True, False)
ax.plot_date(hdates, txP, 'b', None, True, False)
ax.plot_date(hdates, rxB, 'g', None, True, False)
ax.plot_date(hdates, txB, 'b', None, True, False)
ax.plot_date(hdates, col, 'r', None, True, False)
ax.axis([ hdates[0], ( hdates[0] + 0.042 ), -7000, 7000])
ax.grid(True)
fig.autofmt_xdate()
pylab.savefig( filename, dpi=(640/8))

I don't think I understand the whole process of generation, but I thought at
least at the beginnig I was having a good feeling with this API.
Now I wonder how to go around this. Maybe you'll have an idea :-o

Best regards

DvD

------------------------------------------------------------------------------

_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Hi matplotlib users!

Did someone solve the problem of use fig.autofmt_xdate() function with
SubplotHost object?
I googled for it and I found this question only here, without solution. Is
there a bug? Anyone knows
someway to solve this?

Thank you,

[]'s

Rodrigo Batista

David GUERINEAU wrote:

···

Hi matplotlib_users !

I'm David from Berlin, and believe I'm experiencing some problem with the
SubplotHost module:

I'm generating graphs from hudge databases of cpu and ethernet statistics,
and I wanted to mix several graphs concerning ethernet statistics in the
same figure,
with time as x axis, and bytes-in, bytes-out, packets-in, packets-out and
number of
collisions as three different y axes, with three different scale.

I took the inspiration from

for the x axes and from

http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes2.html
for the y axes

The following code is a synthetic reproduction of the problem I'm
experiencing (it is also attached):

from matplotlib.dates import date2num
from matplotlib import pyplot
from matplotlib import pylab
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
from datetime import datetime

dates = [ 733581.20833333337, 733581.20837962965, 733581.20842592593,
733581.20847222221, 733581.20851851848,
      733581.20855324075, 733581.20858796302, 733581.2086342593,
733581.20866898145, 733581.20871527772]
rxB = [054L, 130L, 144L, 54L, 36L, 9L, 35L, 43L, 85L, 43L]
txB = [4L, 9L, 9L, 5L, 4L, 4L, 4L, 5L, 6L, 5L]
rxP = [77, 228, 251, 112, 77, 42, 75, 97, 147, 91]
txP = [61, 177, 188, 90, 61, 40, 64, 76, 113, 77]
col = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0]

ethPlot = pyplot
fig = ethPlot.figure()
host = SubplotHost(fig, 111)

host.set_ylabel("kB/s")
host.set_xlabel("Time")

par1 = host.twinx()
par2 = host.twinx()

par1.set_ylabel("Packets/s")

par2.axis["right"].set_visible(False)

offset = 60, 0
new_axisline = par2.get_grid_helper().new_fixed_axis
par2.axis["right2"] = new_axisline(loc="right",
                    axes=par2,
                    offset=offset)

par2.axis["right2"].label.set_visible(True)
par2.axis["right2"].set_label("Collisions")

par1.set_ylim(0, 6000)
par2.set_ylim(0, 7000)

host.axis([ dates[0], ( dates[0] + 0.041 ), -7000, 7000])
par1.axis([ dates[0], ( dates[0] + 0.041 ), -10000, 10000])
par2.axis([ dates[0], ( dates[0] + 0.041 ), -700, 700])

fig.add_axes(host)
ethPlot.subplots_adjust(right=0.75)

drawRxByt, = host.plot_date(dates, rxB, 'g', tz=None, xdate=True,
ydate=False, label="kB/s in")
drawTxByt, = host.plot_date(dates, txB, 'b', tz=None, xdate=True,
ydate=False, label="kB/s out")
drawRxPaq, = par1.plot_date(dates, rxP, 'm', tz=None, xdate=True,
ydate=False, label="packets/s in")
drawTxPaq, = par1.plot_date(dates, txP, 'y', tz=None, xdate=True,
ydate=False, label="packets/s out")
drawColls, = par2.plot_date(dates, col, 'r', tz=None, xdate=True,
ydate=False, label="collisions")

fig.autofmt_xdate()

host.set_xlabel("Time")
host.set_ylabel("kB/s")
par1.set_ylabel("Packets/s")

host.legend()

host.axis["left"].label.set_color(drawRxByt.get_color())
host.axis["left"].label.set_color(drawTxByt.get_color())
par1.axis["right"].label.set_color(drawRxPaq.get_color())
par1.axis["right"].label.set_color(drawtxPaq.get_color())
par2.axis["right2"].label.set_color(drawColls.get_color())

ethPlot.draw()
pylab.savefig( './test.png', dpi=(640/8))

Maybe I do something wrong somewhere here, but other scripts that do the
same for a single graphwork like a charm. So it's not a question of
dataType
or something. To compare with a working code, here is the first version of
the fuction that does the job on single graphs without any problem :

def drawEthGraph(filename, hdates, rxP, txP, rxB, txB, col):
  ethPlot = pyplot
  fig = ethPlot.figure()
  ax = fig.add_subplot(111)
  ax.plot_date(hdates, rxP, 'g', None, True, False)
  ax.plot_date(hdates, txP, 'b', None, True, False)
  ax.plot_date(hdates, rxB, 'g', None, True, False)
  ax.plot_date(hdates, txB, 'b', None, True, False)
  ax.plot_date(hdates, col, 'r', None, True, False)
  ax.axis([ hdates[0], ( hdates[0] + 0.042 ), -7000, 7000])
  ax.grid(True)
  fig.autofmt_xdate()
  pylab.savefig( filename, dpi=(640/8))

I don't think I understand the whole process of generation, but I thought
at
least at the beginnig I was having a good feeling with this API.
Now I wonder how to go around this. Maybe you'll have an idea :-o

Best regards

DvD

from matplotlib.dates import date2num
from matplotlib import pyplot
from matplotlib import pylab
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
from datetime import datetime

dates = [ 733581.20833333337, 733581.20837962965, 733581.20842592593,
733581.20847222221, 733581.20851851848,
    733581.20855324075, 733581.20858796302, 733581.2086342593,
733581.20866898145, 733581.20871527772]
rxB = [054L, 130L, 144L, 54L, 36L, 9L, 35L, 43L, 85L, 43L]
txB = [4L, 9L, 9L, 5L, 4L, 4L, 4L, 5L, 6L, 5L]
rxP = [77, 228, 251, 112, 77, 42, 75, 97, 147, 91]
txP = [61, 177, 188, 90, 61, 40, 64, 76, 113, 77]
col = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0]

ethPlot = pyplot
fig = ethPlot.figure()
host = SubplotHost(fig, 111)

host.set_ylabel("kB/s")
host.set_xlabel("Time")

par1 = host.twinx()
par2 = host.twinx()

par1.set_ylabel("Packets/s")

par2.axis["right"].set_visible(False)

offset = 60, 0
new_axisline = par2.get_grid_helper().new_fixed_axis
par2.axis["right2"] = new_axisline(loc="right",
            axes=par2,
            offset=offset)

par2.axis["right2"].label.set_visible(True)
par2.axis["right2"].set_label("Collisions")

par1.set_ylim(0, 6000)
par2.set_ylim(0, 7000)

host.axis([ dates[0], ( dates[0] + 0.041 ), -7000, 7000])
par1.axis([ dates[0], ( dates[0] + 0.041 ), -10000, 10000])
par2.axis([ dates[0], ( dates[0] + 0.041 ), -700, 700])

fig.add_axes(host)
ethPlot.subplots_adjust(right=0.75)

drawRxByt, = host.plot_date(dates, rxB, 'g', tz=None, xdate=True,
ydate=False, label="kB/s in")
drawTxByt, = host.plot_date(dates, txB, 'b', tz=None, xdate=True,
ydate=False, label="kB/s out")
drawRxPaq, = par1.plot_date(dates, rxP, 'm', tz=None, xdate=True,
ydate=False, label="packets/s in")
drawTxPaq, = par1.plot_date(dates, txP, 'y', tz=None, xdate=True,
ydate=False, label="packets/s out")
drawColls, = par2.plot_date(dates, col, 'r', tz=None, xdate=True,
ydate=False, label="collisions")

fig.autofmt_xdate()

host.set_xlabel("Time")
host.set_ylabel("kB/s")
par1.set_ylabel("Packets/s")

host.legend()

host.axis["left"].label.set_color(drawRxByt.get_color())
host.axis["left"].label.set_color(drawTxByt.get_color())
par1.axis["right"].label.set_color(drawRxPaq.get_color())
par1.axis["right"].label.set_color(drawtxPaq.get_color())
par2.axis["right2"].label.set_color(drawColls.get_color())

ethPlot.draw()
pylab.savefig( './test.png', dpi=(640/8))

------------------------------------------------------------------------------

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Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
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--
View this message in context: http://old.nabble.com/"Ordinal-must-be->%3D-1"-with-SuplotHost-and-dates-tp24305444p27144728.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

The workarounds suggested in this thread does not work?
To me, the ordinal thing is not actually a bug, but you need some
extra caution to avoid this error happening.

The issue with the label roration is a different matter though.

Regards,

-JJ

···

On Wed, Jan 13, 2010 at 8:16 AM, Rodribat <rodribat@...287...> wrote:

Hi matplotlib users!

Did someone solve the problem of use fig.autofmt_xdate() function with
SubplotHost object?
I googled for it and I found this question only here, without solution. Is
there a bug? Anyone knows
someway to solve this?

Thank you,

[]'s

Rodrigo Batista

David GUERINEAU wrote:

Hi matplotlib_users !

I'm David from Berlin, and believe I'm experiencing some problem with the
SubplotHost module:

I'm generating graphs from hudge databases of cpu and ethernet statistics,
and I wanted to mix several graphs concerning ethernet statistics in the
same figure,
with time as x axis, and bytes-in, bytes-out, packets-in, packets-out and
number of
collisions as three different y axes, with three different scale.

I took the inspiration from

for the x axes and from

http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes2.html
for the y axes

The following code is a synthetic reproduction of the problem I'm
experiencing (it is also attached):

from matplotlib.dates import date2num
from matplotlib import pyplot
from matplotlib import pylab
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
from datetime import datetime

dates = [ 733581.20833333337, 733581.20837962965, 733581.20842592593,
733581.20847222221, 733581.20851851848,
733581.20855324075, 733581.20858796302, 733581.2086342593,
733581.20866898145, 733581.20871527772]
rxB = [054L, 130L, 144L, 54L, 36L, 9L, 35L, 43L, 85L, 43L]
txB = [4L, 9L, 9L, 5L, 4L, 4L, 4L, 5L, 6L, 5L]
rxP = [77, 228, 251, 112, 77, 42, 75, 97, 147, 91]
txP = [61, 177, 188, 90, 61, 40, 64, 76, 113, 77]
col = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0]

ethPlot = pyplot
fig = ethPlot.figure()
host = SubplotHost(fig, 111)

host.set_ylabel("kB/s")
host.set_xlabel("Time")

par1 = host.twinx()
par2 = host.twinx()

par1.set_ylabel("Packets/s")

par2.axis["right"].set_visible(False)

offset = 60, 0
new_axisline = par2.get_grid_helper().new_fixed_axis
par2.axis["right2"] = new_axisline(loc="right",
axes=par2,
offset=offset)

par2.axis["right2"].label.set_visible(True)
par2.axis["right2"].set_label("Collisions")

par1.set_ylim(0, 6000)
par2.set_ylim(0, 7000)

host.axis([ dates[0], ( dates[0] + 0.041 ), -7000, 7000])
par1.axis([ dates[0], ( dates[0] + 0.041 ), -10000, 10000])
par2.axis([ dates[0], ( dates[0] + 0.041 ), -700, 700])

fig.add_axes(host)
ethPlot.subplots_adjust(right=0.75)

drawRxByt, = host.plot_date(dates, rxB, 'g', tz=None, xdate=True,
ydate=False, label="kB/s in")
drawTxByt, = host.plot_date(dates, txB, 'b', tz=None, xdate=True,
ydate=False, label="kB/s out")
drawRxPaq, = par1.plot_date(dates, rxP, 'm', tz=None, xdate=True,
ydate=False, label="packets/s in")
drawTxPaq, = par1.plot_date(dates, txP, 'y', tz=None, xdate=True,
ydate=False, label="packets/s out")
drawColls, = par2.plot_date(dates, col, 'r', tz=None, xdate=True,
ydate=False, label="collisions")

fig.autofmt_xdate()

host.set_xlabel("Time")
host.set_ylabel("kB/s")
par1.set_ylabel("Packets/s")

host.legend()

host.axis["left"].label.set_color(drawRxByt.get_color())
host.axis["left"].label.set_color(drawTxByt.get_color())
par1.axis["right"].label.set_color(drawRxPaq.get_color())
par1.axis["right"].label.set_color(drawtxPaq.get_color())
par2.axis["right2"].label.set_color(drawColls.get_color())

ethPlot.draw()
pylab.savefig( './test.png', dpi=(640/8))

Maybe I do something wrong somewhere here, but other scripts that do the
same for a single graphwork like a charm. So it's not a question of
dataType
or something. To compare with a working code, here is the first version of
the fuction that does the job on single graphs without any problem :

def drawEthGraph(filename, hdates, rxP, txP, rxB, txB, col):
ethPlot = pyplot
fig = ethPlot.figure()
ax = fig.add_subplot(111)
ax.plot_date(hdates, rxP, 'g', None, True, False)
ax.plot_date(hdates, txP, 'b', None, True, False)
ax.plot_date(hdates, rxB, 'g', None, True, False)
ax.plot_date(hdates, txB, 'b', None, True, False)
ax.plot_date(hdates, col, 'r', None, True, False)
ax.axis([ hdates[0], ( hdates[0] + 0.042 ), -7000, 7000])
ax.grid(True)
fig.autofmt_xdate()
pylab.savefig( filename, dpi=(640/8))

I don't think I understand the whole process of generation, but I thought
at
least at the beginnig I was having a good feeling with this API.
Now I wonder how to go around this. Maybe you'll have an idea :-o

Best regards

DvD

from matplotlib.dates import date2num
from matplotlib import pyplot
from matplotlib import pylab
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
from datetime import datetime

dates = [ 733581.20833333337, 733581.20837962965, 733581.20842592593,
733581.20847222221, 733581.20851851848,
733581.20855324075, 733581.20858796302, 733581.2086342593,
733581.20866898145, 733581.20871527772]
rxB = [054L, 130L, 144L, 54L, 36L, 9L, 35L, 43L, 85L, 43L]
txB = [4L, 9L, 9L, 5L, 4L, 4L, 4L, 5L, 6L, 5L]
rxP = [77, 228, 251, 112, 77, 42, 75, 97, 147, 91]
txP = [61, 177, 188, 90, 61, 40, 64, 76, 113, 77]
col = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0]

ethPlot = pyplot
fig = ethPlot.figure()
host = SubplotHost(fig, 111)

host.set_ylabel("kB/s")
host.set_xlabel("Time")

par1 = host.twinx()
par2 = host.twinx()

par1.set_ylabel("Packets/s")

par2.axis["right"].set_visible(False)

offset = 60, 0
new_axisline = par2.get_grid_helper().new_fixed_axis
par2.axis["right2"] = new_axisline(loc="right",
axes=par2,
offset=offset)

par2.axis["right2"].label.set_visible(True)
par2.axis["right2"].set_label("Collisions")

par1.set_ylim(0, 6000)
par2.set_ylim(0, 7000)

host.axis([ dates[0], ( dates[0] + 0.041 ), -7000, 7000])
par1.axis([ dates[0], ( dates[0] + 0.041 ), -10000, 10000])
par2.axis([ dates[0], ( dates[0] + 0.041 ), -700, 700])

fig.add_axes(host)
ethPlot.subplots_adjust(right=0.75)

drawRxByt, = host.plot_date(dates, rxB, 'g', tz=None, xdate=True,
ydate=False, label="kB/s in")
drawTxByt, = host.plot_date(dates, txB, 'b', tz=None, xdate=True,
ydate=False, label="kB/s out")
drawRxPaq, = par1.plot_date(dates, rxP, 'm', tz=None, xdate=True,
ydate=False, label="packets/s in")
drawTxPaq, = par1.plot_date(dates, txP, 'y', tz=None, xdate=True,
ydate=False, label="packets/s out")
drawColls, = par2.plot_date(dates, col, 'r', tz=None, xdate=True,
ydate=False, label="collisions")

fig.autofmt_xdate()

host.set_xlabel("Time")
host.set_ylabel("kB/s")
par1.set_ylabel("Packets/s")

host.legend()

host.axis["left"].label.set_color(drawRxByt.get_color())
host.axis["left"].label.set_color(drawTxByt.get_color())
par1.axis["right"].label.set_color(drawRxPaq.get_color())
par1.axis["right"].label.set_color(drawtxPaq.get_color())
par2.axis["right2"].label.set_color(drawColls.get_color())

ethPlot.draw()
pylab.savefig( './test.png', dpi=(640/8))

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Hello,
I came across problem of label rotation with autofmt_xdate() in subplothost
too. Is there a new version with the bug fixed or a workaround to doing the
label rotation in subplothost?
Thanks,
Solomon

Jae-Joon Lee wrote:

···

The workarounds suggested in this thread does not work?
To me, the ordinal thing is not actually a bug, but you need some
extra caution to avoid this error happening.

The issue with the label roration is a different matter though.

Regards,

-JJ

On Wed, Jan 13, 2010 at 8:16 AM, Rodribat <rodribat@...287...> wrote:

Hi matplotlib users!

Did someone solve the problem of use fig.autofmt_xdate() function with
SubplotHost object?
I googled for it and I found this question only here, without solution.
Is
there a bug? Anyone knows
someway to solve this?

Thank you,

[]'s

Rodrigo Batista

David GUERINEAU wrote:

Hi matplotlib_users !

I'm David from Berlin, and believe I'm experiencing some problem with
the
SubplotHost module:

I'm generating graphs from hudge databases of cpu and ethernet
statistics,
and I wanted to mix several graphs concerning ethernet statistics in the
same figure,
with time as x axis, and bytes-in, bytes-out, packets-in, packets-out
and
number of
collisions as three different y axes, with three different scale.

I took the inspiration from

for the x axes and from

http://matplotlib.sourceforge.net/examples/axes_grid/demo_parasite_axes2.html
for the y axes

The following code is a synthetic reproduction of the problem I'm
experiencing (it is also attached):

from matplotlib.dates import date2num
from matplotlib import pyplot
from matplotlib import pylab
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
from datetime import datetime

dates = [ 733581.20833333337, 733581.20837962965, 733581.20842592593,
733581.20847222221, 733581.20851851848,
733581.20855324075, 733581.20858796302, 733581.2086342593,
733581.20866898145, 733581.20871527772]
rxB = [054L, 130L, 144L, 54L, 36L, 9L, 35L, 43L, 85L, 43L]
txB = [4L, 9L, 9L, 5L, 4L, 4L, 4L, 5L, 6L, 5L]
rxP = [77, 228, 251, 112, 77, 42, 75, 97, 147, 91]
txP = [61, 177, 188, 90, 61, 40, 64, 76, 113, 77]
col = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0]

ethPlot = pyplot
fig = ethPlot.figure()
host = SubplotHost(fig, 111)

host.set_ylabel("kB/s")
host.set_xlabel("Time")

par1 = host.twinx()
par2 = host.twinx()

par1.set_ylabel("Packets/s")

par2.axis["right"].set_visible(False)

offset = 60, 0
new_axisline = par2.get_grid_helper().new_fixed_axis
par2.axis["right2"] = new_axisline(loc="right",
axes=par2,
offset=offset)

par2.axis["right2"].label.set_visible(True)
par2.axis["right2"].set_label("Collisions")

par1.set_ylim(0, 6000)
par2.set_ylim(0, 7000)

host.axis([ dates[0], ( dates[0] + 0.041 ), -7000, 7000])
par1.axis([ dates[0], ( dates[0] + 0.041 ), -10000, 10000])
par2.axis([ dates[0], ( dates[0] + 0.041 ), -700, 700])

fig.add_axes(host)
ethPlot.subplots_adjust(right=0.75)

drawRxByt, = host.plot_date(dates, rxB, 'g', tz=None, xdate=True,
ydate=False, label="kB/s in")
drawTxByt, = host.plot_date(dates, txB, 'b', tz=None, xdate=True,
ydate=False, label="kB/s out")
drawRxPaq, = par1.plot_date(dates, rxP, 'm', tz=None, xdate=True,
ydate=False, label="packets/s in")
drawTxPaq, = par1.plot_date(dates, txP, 'y', tz=None, xdate=True,
ydate=False, label="packets/s out")
drawColls, = par2.plot_date(dates, col, 'r', tz=None, xdate=True,
ydate=False, label="collisions")

fig.autofmt_xdate()

host.set_xlabel("Time")
host.set_ylabel("kB/s")
par1.set_ylabel("Packets/s")

host.legend()

host.axis["left"].label.set_color(drawRxByt.get_color())
host.axis["left"].label.set_color(drawTxByt.get_color())
par1.axis["right"].label.set_color(drawRxPaq.get_color())
par1.axis["right"].label.set_color(drawtxPaq.get_color())
par2.axis["right2"].label.set_color(drawColls.get_color())

ethPlot.draw()
pylab.savefig( './test.png', dpi=(640/8))

Maybe I do something wrong somewhere here, but other scripts that do the
same for a single graphwork like a charm. So it's not a question of
dataType
or something. To compare with a working code, here is the first version
of
the fuction that does the job on single graphs without any problem :

def drawEthGraph(filename, hdates, rxP, txP, rxB, txB, col):
ethPlot = pyplot
fig = ethPlot.figure()
ax = fig.add_subplot(111)
ax.plot_date(hdates, rxP, 'g', None, True, False)
ax.plot_date(hdates, txP, 'b', None, True, False)
ax.plot_date(hdates, rxB, 'g', None, True, False)
ax.plot_date(hdates, txB, 'b', None, True, False)
ax.plot_date(hdates, col, 'r', None, True, False)
ax.axis([ hdates[0], ( hdates[0] + 0.042 ), -7000, 7000])
ax.grid(True)
fig.autofmt_xdate()
pylab.savefig( filename, dpi=(640/8))

I don't think I understand the whole process of generation, but I
thought
at
least at the beginnig I was having a good feeling with this API.
Now I wonder how to go around this. Maybe you'll have an idea :-o

Best regards

DvD

from matplotlib.dates import date2num
from matplotlib import pyplot
from matplotlib import pylab
from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
from datetime import datetime

dates = [ 733581.20833333337, 733581.20837962965, 733581.20842592593,
733581.20847222221, 733581.20851851848,
733581.20855324075, 733581.20858796302, 733581.2086342593,
733581.20866898145, 733581.20871527772]
rxB = [054L, 130L, 144L, 54L, 36L, 9L, 35L, 43L, 85L, 43L]
txB = [4L, 9L, 9L, 5L, 4L, 4L, 4L, 5L, 6L, 5L]
rxP = [77, 228, 251, 112, 77, 42, 75, 97, 147, 91]
txP = [61, 177, 188, 90, 61, 40, 64, 76, 113, 77]
col = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0]

ethPlot = pyplot
fig = ethPlot.figure()
host = SubplotHost(fig, 111)

host.set_ylabel("kB/s")
host.set_xlabel("Time")

par1 = host.twinx()
par2 = host.twinx()

par1.set_ylabel("Packets/s")

par2.axis["right"].set_visible(False)

offset = 60, 0
new_axisline = par2.get_grid_helper().new_fixed_axis
par2.axis["right2"] = new_axisline(loc="right",
axes=par2,
offset=offset)

par2.axis["right2"].label.set_visible(True)
par2.axis["right2"].set_label("Collisions")

par1.set_ylim(0, 6000)
par2.set_ylim(0, 7000)

host.axis([ dates[0], ( dates[0] + 0.041 ), -7000, 7000])
par1.axis([ dates[0], ( dates[0] + 0.041 ), -10000, 10000])
par2.axis([ dates[0], ( dates[0] + 0.041 ), -700, 700])

fig.add_axes(host)
ethPlot.subplots_adjust(right=0.75)

drawRxByt, = host.plot_date(dates, rxB, 'g', tz=None, xdate=True,
ydate=False, label="kB/s in")
drawTxByt, = host.plot_date(dates, txB, 'b', tz=None, xdate=True,
ydate=False, label="kB/s out")
drawRxPaq, = par1.plot_date(dates, rxP, 'm', tz=None, xdate=True,
ydate=False, label="packets/s in")
drawTxPaq, = par1.plot_date(dates, txP, 'y', tz=None, xdate=True,
ydate=False, label="packets/s out")
drawColls, = par2.plot_date(dates, col, 'r', tz=None, xdate=True,
ydate=False, label="collisions")

fig.autofmt_xdate()

host.set_xlabel("Time")
host.set_ylabel("kB/s")
par1.set_ylabel("Packets/s")

host.legend()

host.axis["left"].label.set_color(drawRxByt.get_color())
host.axis["left"].label.set_color(drawTxByt.get_color())
par1.axis["right"].label.set_color(drawRxPaq.get_color())
par1.axis["right"].label.set_color(drawtxPaq.get_color())
par2.axis["right2"].label.set_color(drawColls.get_color())

ethPlot.draw()
pylab.savefig( './test.png', dpi=(640/8))

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Join now and get one step closer to millions of Verizon customers
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While this is fixed in the svn, there is no release yet.
One workaround is to turn off axisline mode.

host = SubplotHost(fig, 111)
host.toggle_axisline(False)

Note that, with this change, things like

host.axis["left"].label.set_color(drawRxByt.get_color())

won't work and you have to use the methods of original matplotlib Axes.

Regards,

-JJ

···

On Wed, May 19, 2010 at 5:47 PM, Solomon M Negusse <solomon.negusse@...3115...> wrote:

Hello,
I came across problem of label rotation with autofmt_xdate() in subplothost
too. Is there a new version with the bug fixed or a workaround to doing the
label rotation in subplothost?