[Matplotlib-users] Plot

[Scott Lasley]

This should do what you want.   It works in a jupyter notebook but not in jupyterlab.  It also works as a standalone python script if you comment out the %matplotlib notebook line.

Best regards,
Scott



# based on https://matplotlib.org/gallery/animation/animate_decay.html#sphx-glr-gallery-animation-animate-decay-py
# but uses a zip iterator for the frames variable in FuncAnimation instead of the data_gen generator function
# used in the example

# comment out this line if you are not running this in a jupyter notebook
%matplotlib notebook
# %matplotlib nbagg

import numpy as np
from matplotlib import pyplot as plt
from matplotlib.animation import FuncAnimation


def init_plot():
    # if you know the data ranges you can set fixed 
    # xlim and ylim limits here, otherwise uncomment 
    # the ax.relim and ax.autoscale_view calls in 
    # draw_pts to rescale the axes based on the 
    # last data point plotted
    ax.set(xlim=[0, 11], ylim=[0, 120])
    return []


def update_pts(data):
    x.append(data[0])
    y.append(data[1])
    pts.set_data(x, y)
#     ax.relim()
#     ax.autoscale_view(scaley=True)
    return [pts]


# data to plot.  replace with your data values
xvals = np.arange(1, 11)
yvals = np.array([1, 4, 9, 16, 25, 36, 49, 64, 81, 100])

# zip xvals[1:] and yvals[1:] since we are plotting
# xvals[0], yvals[0] at time 0 after we create the figure
xy_points = zip(xvals[1:], yvals[1:])

# create x and y lists containing the first point to be plotted.
# update_pts will append the next x and y values from the iterator xy_points 
# to x and y every 5000ms and update the pts being plotted 
x = [xvals[0]]
y = [yvals[0]]

# create a figure and plot the first x, y point at time 0
fig, ax = plt.subplots()
pts = ax.plot(x, y, 'o')[0]

# loop through the remaining points and update the plot every 
# 5000ms
anim = FuncAnimation(fig=fig, 
                    func=update_pts, 
                    frames=xy_points, 
                    init_func=init_plot,
                    interval=5000, 
                    blit=False,
                    repeat=False)

plt.show()



> On Aug 3, 2019, at 1:04 AM, Partha Sinha <pnsinha68 at gmail.com> wrote:
> 
> I want to plot a list of 10 numbers. I want to plot each point after 5 secs (first point in o sec and 2nd point after 5 sec anf so on) and want to plot them in same graph.
> How to do?
> Regards
> Parth
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