Hi, I think you need to do a bit of hackery to make this work. The x and y axes are governed by the variables ds.coordinates.x_axis and ds.coordinates.y_axis. These are dictionaries keyed by the axis along which a slice is made. You can possibly change the orientation by modifying those, but the change will have to be made before making the plot. On Tue, Jul 2, 2019 at 5:00 PM Sushilkumar wrote:

Dear yt: I am trying to plot streamlines using SlicePlot(x axis) and annotate_streamlines (script below). The resulting image (google drive link below) gives the orientation of streamlines along y axis. I would like to have the streamlines orient along z-axis. I have tried switching the variables on "SlicePlot" and "annotate_streamlines" but the streamlines stays the same.

Can you give me any suggestions?

Thank you in advance ----------------------------------- Image link https://drive.google.com/open?id=0B4g8shg4DL7oak5PLWVVdG5UMHc ----------------------------------- script

import yt import numpy as np import matplotlib.pylab as pl import matplotlib

from yt.visualization.api import Streamlines from yt.units import km from mpl_toolkits.mplot3d import Axes3D

ms = 24000000 vector_max=ms-(ms/3) ms1=ms-vector_max dims = (200,200,200)

x = np.genfromtxt("/work/jbi157/MODEL3/UPDATE_B/yo_n_t005.mtx",skip_header=2,usecols=1, dtype="f8") x = x.reshape((8000000, 3), order="F")

field1 = x[:,2].reshape(dims, order="F") field2 = x[:,1].reshape(dims, order="F") field3 = x[:,0].reshape(dims, order="F")

data = dict(field_x = field1, field_y = field2, field_z = field3)

bbox = np.array([[-100, 99], [-100, 99], [-100, 99]])

pf = yt.load_uniform_grid(data, dims, km, bbox=bbox, nprocs=1)

slc = yt.SlicePlot(pf, 0, ["field_z"], width=(200,'km'))

slc.set_cmap('field_z','B-W LINEAR_r') #slc.set_log('field_z', True, linthresh=0.001)

slc.annotate_streamlines('field_z', 'field_y',factor=16,density=4,plot_args={'color':'blue'}) #slc.annotate_streamlines('field_y', 'field_z',factor=16,density=4)

slc.annotate_line((0.36, 0), (0.36, 1), coord_system='axis',plot_args={'color':'white'}) slc.annotate_line((0.64, 0), (0.64, 1), coord_system='axis',plot_args={'color':'white'})

# larger the value of factor lesser the quiver #slc.annotate_quiver('field_y', 'field_z', factor=20, normalize=True)

#slc.annotate_line_integral_convolution('field_y', 'field_z', lim=(0.30,0.70),cmap="YlGnBu",alpha=1,const_alpha=True)

slc.annotate_sphere([0.5, 0.5, 0.5], radius=(9, 'km'),circle_args={'color':'black'}) #slc.annotate_text((50,50),'t=0',coord_system='plot',text_args={'color':'black'}) slc.annotate_title("t=005, psi=30")

slc.hide_colorbar()

slc.save('plane_x_t_0005.png') #slc.save('plane_x_t_0000.png', mpl_kwargs={'facecolor':'gray'})

On Thu, Jan 10, 2019 at 11:00 AM wrote:

...

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1. ANN: yt dev workshop, March 4-6 (Matthew Turk)

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Date: Thu, 10 Jan 2019 09:58:14 -0600 From: Matthew Turk Subject: [yt-users] ANN: yt dev workshop, March 4-6 To: yt-dev@python.org, Discussion of the yt analysis package Cc: "Campbell, Mary Terese" , Samantha Walkow , Madicken Munk Message-ID: Content-Type: text/plain; charset="UTF-8"

Hi everyone!

We are delighted to invite you to a yt development workshop at the University of Illinois Urbana-Champaign, March 4-6 of 2019. Please feel encouraged to pass this information on to others that may find it interesting!

Information on logistics and registration may be found at the workshop website:

http://yt-project.org/workshops/spring2019/

This workshop will be focused on extending existing functionality, building collaborations with other software projects, and ingestion of new types and classes of data into yt.

The workshop will take place at the National Center for Supercomputing Applications building on the north end of the UIUC campus. The NCSA building is about a block away from the conference hotel and is next door to a parking structure that offers metered all-day parking. There are a number of food trucks nearby, a university-run cafeteria about 2 blocks away, and a university business district with many good lunch restaurants about a half a mile away.

We are planning to offer funding for hotel and travel for those requesting support. If you request funding, you will be notified of available funds by February 16. Travel awards will be made in the form of arranged lodging and airfare, with reservations being made by the conference organizers.

Best regards, The Organizing Committee

MT Campbell Nathan Goldbaum Madicken Munk Matt Turk Samantha Walkow

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