matplotlab 0.1.7

Extended plotting and ML utilities library

Matplotlab

Extended plotting and machine learning utilities library for educational purposes.

A comprehensive Python library providing:

• Reinforcement Learning (RL) - Monte Carlo, TD Learning, Policy/Value Iteration, Dynamic Programming
• Artificial Neural Networks (ANN) - Deep Learning implementations with PyTorch and TensorFlow
• Speech Processing (SP) - Audio analysis, MFCC extraction, vowel synthesis, formant analysis, dataset loading
• Visualization Tools - Enhanced plotting capabilities for ML workflows

Installation

# Install from PyPI
pip install matplotlab

# Or install from source
git clone https://github.com/Sohail-Creates/matplotlab.git
cd matplotlab
pip install -e .

Quick Start

Reinforcement Learning

from matplotlab import rl

# Create environment and find optimal policy
env = rl.create_frozenlake_env()
policy, V, iterations = rl.policy_iteration(env, gamma=0.99)
print(f"Converged in {iterations} iterations")

# Visualize results
rl.plot_value_heatmap(V)
rl.plot_grid_policy(policy)

# NEW: See complete lab workflow (Lab 1-6 + OEL)
rl.flowlab3()  # Shows complete Lab 3 code from import to visualization
rl.flowlab5()  # Shows complete Lab 5 (Policy Iteration) workflow

Artificial Neural Networks

from matplotlab import ann
import torch.nn as nn

# Create simple MLP model
model = ann.create_mlp_model(input_size=10, hidden_sizes=[16, 8], output_size=1)

# Or create CNN
cnn_model = ann.create_fashion_cnn()

# Training is straightforward
for epoch in range(50):
    y_pred = model(X_train)
    loss = loss_fn(y_pred, y_train)
    optimizer.zero_grad()
    loss.backward()
    optimizer.step()

Speech Processing (NEW in v0.1.6!)

from matplotlab import sp

# Synthesize vowel sounds
audio, sr = sp.synthesize_vowel('A', f0=150, duration=1.0)
sp.play_audio(audio, sr)

# Analyze formants (OEL - important for teacher questions!)
formants = sp.identify_formants(audio, sr)
# Shows: Waveform + Spectrum + Spectrogram with F1, F2, F3 marked

# Extract MFCC features
mfcc = sp.extract_mfcc(audio, sr, n_mfcc=13)
# Or show manual implementation
mfcc_manual = sp.extract_mfcc_from_scratch(audio, sr)

# Load datasets with automatic preview
dataset = sp.load_audio_dataset('vowels.zip', sr=16000)
# Automatically shows: structure, waveforms, sample info, audio players

# Generate synthetic datasets
dataset = sp.generate_vowel_dataset(n_samples_per_vowel=100)

# Plot spectrograms and analyze pitch
sp.plot_mel_spectrogram(audio, sr)
sp.plot_pitch_histogram(audio, sr)

# Complete OEL workflow
sp.flowoel()  # Shows complete vowel synthesis code

Features

✅ Reinforcement Learning Module (44 functions)

• Environments: FrozenLake, Custom GridWorld
• Algorithms: Monte Carlo, TD Learning, Policy Iteration, Value Iteration
• MDP Utilities: State transitions, reward functions, probability computations
• Visualization: Heatmaps, policy arrows, convergence plots
• Lab Workflows (NEW): Complete code references for Labs 1-6 and OEL
  • flowlab1() through flowlab6() - Show full lab code workflows
  • flowoel() - Complete OEL implementation reference
  • Perfect for when you forget the sequence of steps!

✅ Artificial Neural Networks Module (85 functions)

• Tensor Operations: PyTorch basics, autograd
• Perceptron: sklearn implementation
• ADALINE: Manual and PyTorch versions
• MLP: Multi-layer perceptron for classification and regression
• CNN: Convolutional neural networks (simple nn.Sequential style)
• Filters: Custom CNN filters with TensorFlow
• Transfer Learning: Pre-trained model fine-tuning

✅ Speech Processing Module (42 functions) - NEW in v0.1.6!

• Audio Loading: Load, play, save, resample audio files
• Spectrograms: Linear, Mel, Narrowband, Wideband spectrograms
• MFCC: Extract MFCC features (librosa + manual implementation)
• Vowel Synthesis: Generate vowel sounds with formant frequencies (OEL)
• Formant Analysis: Identify F1, F2, F3 formants automatically
• Pitch Analysis: Extract and visualize pitch histograms
• Dataset Utilities: Load datasets from ZIP/Drive with auto-preview
• Dataset Generation: Create synthetic vowel datasets
• Lab Workflows: Complete code for Labs 1, 2, 4, 6, OEL, Quiz
• OEL Functions: Perfect for teacher questions about vowel synthesis and analysis!

Requirements

Core (always installed)

• Python >= 3.7
• NumPy >= 1.21.0

Optional (install what you need)

# For Reinforcement Learning
pip install matplotlab[rl]

# For Artificial Neural Networks
pip install matplotlab[ann]

# For Speech Processing (NEW!)
pip install matplotlab[sp]

# Install everything
pip install matplotlab[all]

Individual module dependencies:

• RL: matplotlib, gymnasium, google-generativeai
• ANN: matplotlib, pytorch, tensorflow, scikit-learn
• SP: matplotlib, librosa, soundfile, scipy, ipython, google-generativeai

Key Design Philosophy

Simple, Beginner-Friendly Code:

• Uses nn.Sequential() for neural networks (no complex classes)
• Clear variable names: X_train, y_train, model, loss_fn
• Simple for loops and if-else statements
• No lambda functions or advanced Python features
• Easy to understand and modify

Documentation

• 171 total functions (44 RL + 85 ANN + 42 SP)
• Complete docstrings for every function
• Usage examples included
• All functions have .show() method to view source code
• See SP_MODULE_FUNCTIONS.md for complete SP function guide
• See DATASET_LOADING_GUIDE.md for dataset utilities

Quick Tips

# View source code of any function
sp.synthesize_vowel.show()
rl.policy_iteration.show()
ann.create_mlp_model.show()

# Get AI help
sp.query("How do I extract MFCC features?")
rl.query("Explain policy iteration")

License

MIT License - Free for educational use

Links

• PyPI: https://pypi.org/project/matplotlab/
• GitHub: https://github.com/Sohail-Creates/matplotlab/

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For educational purposes | ML/RL implementations made simple