How do you save the images TrackPy creates for reports

[Rory235]

I have tried the following

plt.figure("1")
tp.plot_traj(t1, superimpose=frame[1000])
plt.imsave("C:/Users/Rory/Downloads", arr="MxN")

[nkeim]

Have you tried not calling plt.figure() beforehand?

If you want to remove all ambiguity, you can get or create axes in the current figure and make sure that plot_traj uses them. Something like (not sure if it's 100% correct):

fig = plt.figure()
ax = fig.get_axes()
tp.plot_traj(..., ax=ax)
fig.savefig(...)

[Rory235]

EDIT: Spelling
So trackpy still creates the plot without the plt.figure()

I tried this

fig1=tp.plot_traj(t1, superimpose=frame[1000]) fig1.savefig(r'C:\Users\Rory\Downloads\1.png')

but get the error

`AttributeError Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_24356/3548345737.py in
1 fig1=tp.plot_traj(t1, superimpose=frame[1000])
----> 2 fig1.savefig(r'C:\Users\Rory\Downloads\1.png')

AttributeError: 'AxesSubplot' object has no attribute 'savefig'`

[nkeim]

That's right. plot_traj returns an Axes object, not a figure. So if you are being explicit about it, you should first get the figure, then tell plot_traj to use axes within it, and then save the figure.

I'll admit I'm a bit surprised that tp.plot_traj(...); plt.savefig(filename) doesn't work. I had thought that it was that simple.

[Rory235]

Ahhhh I see. I gave this a try

fig1 = plt.figure() ax = fig1.get_axes() tp.plot_traj(t1, ax=ax) fig1.savefig(r'C:\Users\Rory\Downloads\1.png')

getting

AttributeError: 'list' object has no attribute 'set_xlabel'

[nkeim]

You're asking the wrong person for matplotlib help, but you could do this instead.

fig = plt.figure()
ax = plt.gca()
tp.plot_traj(..., ax=ax)
fig.savefig(...)

or

ax = tp.plot_traj(...)
ax.figure.savefig(...)