trainplot 0.3.1

Dynamically updating plots in Jupyter notebooks, e.g. for visualizing training progress.

trainplot

Dynamically updating plots in Jupyter notebooks, e.g. for visualizing training progress. Inspired by livelossplot, and aims to be easier to use with better jupyter notebook support.

Installation

pip install trainplot

Usage

This is a simple example (example notebook):

from trainplot import plot
from time import sleep

for i in range(50):
    plot(loss = 1/(i+1), acc = 1-1/(.01*i**2+1))
    sleep(.1)

---

Example for the tf/keras callback (example notebook):

from trainplot import TrainPlotKeras

model = ...
model.fit(x_train, y_train, validation_data=(x_test, y_test), epochs=10, callbacks=[TrainPlotKeras()])

---

It also works together with e.g. tqdm.notebook and printing (example notebook):

from trainplot import plot
from tqdm.notebook import trange
from time import sleep

for i in trange(50):
    plot(i=i, root=i**.5)
    if i % 10 == 0:
        print(f'currently at {i} iterations')
    sleep(0.1)

---

You can make use of a TrainPlot object to add a bunch of custumizations (example notebook):

from trainplot import TrainPlot
from time import sleep

tp = TrainPlot(
    update_period=.2,
    fig_args=dict(nrows=2, ncols=2, figsize=(10, 8), gridspec_kw={'height_ratios': [1, 1], 'width_ratios': [1, 1]}),
    plot_pos={'loss': (0, 0, 0), 'accuracy': (0, 1, 0), 'val_loss': (1, 0, 0), 'val_accuracy': (1, 1, 0)},
    plot_args={'loss': {'color': 'orange'}, 'accuracy': {'color': 'green'}, 'val_loss': {'color': 'orange', 'label': 'validation loss'}, 'val_accuracy': {'color': 'green', 'label': 'validation accuracy'}},
)

for i in range(100, 200):
    tp(step=i, loss=(i/100-2)**4, accuracy=i/2, val_loss=(i/100-2.1)**4, val_accuracy=i/2.1)
    sleep(0.1)

---

More:

• When using a Trainplot object, you can also put the plot into a separate cell than the training loop: example notebook
• Support for threading to improve runtime performance by parallelization
• Experimental plotly support (from trainplot.trainplot import TrainPlotPlotlyExperimental): example notebook

How it works

Trainplot outputs the matplotlib figure to an ipywidgets.Output widget, so it doesn't interfere with other outputs like tqdm or print statements. To avoid wasting resources and flickering, the figure is only updated with a given update_period. This can also be done from a separate threading.Thread, to not block the main thread. A post_run_cell callback is added to the IPython instance, so that all updated TrainPlot figures include all new data when a cell execution is finished. When using trainplot.plot, a TrainPlot object is created for the current cell and cell-execution-count.