Simple script to plot worm movement. A move to using an animation module would probably be more appropriate.

plotWormMovement.py

import matplotlib.pyplot as plt
import h5py
import numpy as np

#SPEED_UP = 4
#DT = 0.05

file_path = u'F:/worm_data/segworm_data/features/798 JU258 on food R_2010_11_25__16_34_17___1___9_features.mat'

h = h5py.File(file_path, 'r')
x = h["worm"]["posture"]["skeleton"]["x"].value
y = h["worm"]["posture"]["skeleton"]["y"].value
h.close()

#NOTE: Dropped frames show up as NaN
x_min = np.nanmin(x) #Why is this not a method of the object?
x_max = np.nanmax(x)
y_min = np.nanmin(y)
y_max = np.nanmax(y)

n_frames = x.shape[0]

fig, ax = plt.subplots()

points, = ax.plot(x[0,:], y[0,:]) #marker='o', linestyle='None'
ax.set_xlim(x_min, x_max) 
ax.set_ylim(y_min, y_max) 

for iFrame in range(n_frames):
    points.set_data(x[iFrame,:], y[iFrame,:])
    #I just wanted it to plot fast, not sure if 0 would be better
    plt.pause(0.001)

note:
x_min = np.nanmax(x)
x_max = np.nanmin(x)

Thanks! The code has been changed.