labels not working

[jamesafoster]

The following code does not produce labels for me. I get the plot, but without any labels.

scale, fontsize = 1, 12
import matplotlib.pyplot as pyplot
figure, ax = pyplot.subplots()
tax = ternary.TernaryAxesSubplot(ax=ax)

tax.set_title("Evolution of 6-6-3 signaler games under ambiguity", fontsize=fontsize)
tax.left_axis_label("Left label $\\alpha^2$", fontsize=fontsize)
tax.right_axis_label("Right label $\\beta^2$", fontsize=fontsize)
tax.bottom_axis_label("Bottom label $\\Gamma - \\Omega$", fontsize=fontsize)

tax.boundary(color="black", linewidth=2.0)
tax.gridlines(multiple=0.1, color="blue")

tax.plot( ((0.1,0.8,0.1),(0.8,0.1,0.1)) )

#tax.scatter( x, marker='s')
tax.legend()
tax.ticks(axis='lbr', color="black", linewidth=1, multiple=0.1)

tax.show()

[marcharper]

On the latest branch, the following (nearly identical) code works for me:

import ternary
import matplotlib.pyplot as pyplot

scale, fontsize = 1, 12
figure, ax = pyplot.subplots()
tax = ternary.TernaryAxesSubplot(ax=ax)

tax.set_title("Evolution of 6-6-3 signaler games under ambiguity", fontsize=fontsize)
tax.left_axis_label("Left label $\\alpha^2$", fontsize=fontsize)
tax.right_axis_label("Right label $\\beta^2$", fontsize=fontsize)
tax.bottom_axis_label("Bottom label $\\Gamma - \\Omega$", fontsize=fontsize)

tax.boundary(linewidth=2.0)
tax.gridlines(multiple=0.1, color="blue")

tax.plot( ((0.1,0.8,0.1),(0.8,0.1,0.1)) )

#tax.scatter( x, marker='s')
tax.legend()
tax.ticks(axis='lbr', linewidth=1, multiple=0.1)

tax.show()

: http://postimg.org/image/qmh1f7mpl/full/

Are you using an older version of matplotlib? Someone else reported something similar a while ago. I just used mpl 1.4.2 on python 2.7 and python 3.4.3 (the Ubuntu packaged versions).

[hareyakana]

Hi, I had similar issue with the label, I'm using spyder(anaconda) for mac on python 3.4

[marcharper]

I appreciate the reports but I really need more information. The matplotlib version seems to be important -- this may be an upstream issue, or something that can be worked around.

I don't have a Mac to test with.

[hareyakana]

matpotlib-1.5
ipython-4.0.1
spyder-2.3.7

by adding _redraw_labels, i manage to get the labels for the 3 axis. not sure if this is intended

d.set_title(r"source flavour composition $\nu_e,\nu_\mu,\nu_\tau$",fontsize=20)
d.left_axis_label(r"$|\nu_e|$",fontsize=15)
d.right_axis_label(r"$|\nu_\mu|$",fontsize=15)
d.bottom_axis_label(r"$|\nu_\tau|$",fontsize=15)
d._redraw_labels()

[marcharper]

That is helpful -- the labels have to be redrawn on resizing and other operations so that the angles are right. I can add more rendering hooks.

If you show the image and resize the window do the labels appear? Perhaps there is a difference in rendering or event handling based on the backend or mpl version.

[hareyakana]

figure, d=t.figure(scale=1)

d.boundary(linewidth=2.0)
d.gridlines(multiple=0.1,color="blue",linewidth=0.8)
d.gridlines(multiple=0.02,color="green",linewidth=0.4)

d.set_title(r"source flavour composition $\nu_e,\nu_\mu,\nu_\tau$",fontsize=20)
d.left_axis_label(r"$|\nu_e|$",fontsize=15)
d.right_axis_label(r"$|\nu_\mu|$",fontsize=15)
d.bottom_axis_label(r"$|\nu_\tau|$",fontsize=15)
#d._redraw_labels()

d.ticks(axis='rlb',multiple=0.1,axes_colors={'l': 'g', 'r':'b', 'b': 'r'},clockwise=False,label=ticks)
p.axis('off')
point=[(1/3,1/3,1/3)]
d.scatter(point, marker='D', color='green', label="Green Diamonds",)
d.resize_drawing_canvas(scale=1.05)
d.legend
d.show()

after i uncomment _redraw_labels() line, I was able to get the label shown

[hareyakana]

my ipython console renders the image in a separate interactive window, I could do it inline but would prefer a separate window to check on the plots. I have try tinker with the offset with various value but it just does not show the label without the _redraw_labels line.

while my code i pasted here, is there any way I could change the orientation of the ticks? with the clockwise=True but maintaining the same orientation as clockwise=False. I have check some of the past closed issues but can't get my head around it.

[marcharper]

I added the label draw callback to the "draw_event" of mpl -- hopefully that causes the labels to be drawn initially as expected. The label positioning does not take much into account: there's no easy way to predict what the latex will render to as far as I know, what all the font-sizes are, etc., so you'll have to adjust the offsets as needed.

I'm not sure what you are asking regarding the tick orientation -- the library implements the two standard choices. Can you be more specific?

[hareyakana]

something similar to issue#31

I am trying to produce something similar to this https://inspirehep.net/record/1343979/files/flav_scan-eps-converted-to.png

but I can't seem to get for example the bottom axis to go 0 to 1 instead of 1 to 0. When I try to add clockwise=True to ticks. It does go 0 to 1 but the orientation changes.

from issue #31,`I can't seem to understand the phrase u mentioned "You can pass clockwise=True to ticks to reverse the orientation (which changes the tick angles)." right after the second plot image. would you elaborate on that?

[jamesafoster]

Resizing didn’t help, but…adding _redraw_labels() DID!

I haven’t pulled the latest github version, so this is using the version I had with my original comment.

j

On Nov 29, 2015, at 2:16 PM, Marc Harper, PhD notifications@github.com wrote:

I added the label draw callback to the "draw_event" of mpl -- hopefully that causes the labels to be drawn initially as expected. The label positioning does not take much into account: there's no easy way to predict what the latex will render to as far as I know, what all the font-sizes are, etc., so you'll have to adjust the offsets as needed.

I'm not sure what you are asking regarding the tick orientation -- the library implements the two standard choices. Can you be more specific?

—
Reply to this email directly or view it on GitHub #36 (comment).

[marcharper]

@hareyakana You can manually give the tick labels as an argument to tax.ticks(ticks=[]) to change the default labeling order. If you need something other than the two orientations for some reason them you'll have to transform the data before plotting.

[marcharper]

@jamesafoster that's bizarre. I'm glad there is a workaround for now. My guess is that various combinations of mpl backend and version trigger events differently, and so sometimes label drawing doesn't occur.

[marcharper]

If either of you can check the github master branch that would be most appreciated. If it's fixed I'll push a new pypi version.

[jamesafoster]

I still don’t get labels unless I re-size (yes, that works now…I think I may not have tested it correctly before), or redraw the axes.

I get the following message: /Users/jamesafoster/anaconda/lib/python3.4/site-packages/matplotlib/axes/_axes.py:475: UserWarning: No labelled objects found. Use label='...' kwarg on individual plots.
warnings.warn("No labelled objects found. "

To be honest, I’m not sure I downloaded the correct build. On gitgub, I think I’m looking at teh master branch, and I downloaded and installed that.

Thanks for looking into this!

j

James A. Foster
Professor, University of Idaho
Institute for Bioinformatics & Evolutionary STudies (IBEST)


> On Nov 30, 2015, at 12:19 PM, Marc Harper, PhD <notifications@github.com> wrote:
> 
> If either of you can check the github master branch that would be most appreciated. If it's fixed I'll push a new pypi version.
> 
> —
> Reply to this email directly or view it on GitHub <https://github.com/marcharper/python-ternary/issues/36#issuecomment-160749250>.
> 

[hareyakana]

I have tried with the latest master branch and it does not show the axis label without _redraw_labels()