Add user documentation and example notebook

[Copilot]

Adds comprehensive documentation for directional wave spectrum analysis toolkit.

Documentation

README.md

• Installation requirements and quick start
• API reference for main functions (dirspec, infospec, plotspec)
• Data structure specifications (ID, SM, EP dictionaries)
• Estimation method comparison (IMLM, EMEP only - accurately reflects implemented methods)
• Note about additional methods from original MATLAB toolbox not yet implemented

examples/pyDIWASP_example.ipynb

• End-to-end workflow: synthetic wave generation → spectrum computation → visualization
• Demonstrates both IMLM and EMEP methods with comparative analysis
• Includes 1D/2D/3D plotting techniques
• Robust import path handling with clear usage instructions

Bug Fix

Fixed TypeError in dirspec.py when EP['nfft'] not provided:

# Before: crashes when check_data() sets EP['nfft'] = []
if 'nfft' not in EP:
    nfft = int(2 ** (8 + np.round(np.log2(ID['fs']))))

# After: handles both missing and empty values
if 'nfft' not in EP or not EP['nfft']:
    nfft = int(2 ** (8 + np.round(np.log2(ID['fs']))))

The check_data() validation function initializes EP['nfft'] to empty list when absent, which then fails int conversion.

Housekeeping

• Added .gitignore for Python cache files and IDE artifacts

Documentation Accuracy

Based on code review feedback, the documentation has been corrected to only list estimation methods that are actually implemented (IMLM and EMEP). References to unimplemented methods (EMLM, DFTM, BDM) have been removed or clarified with notes that these exist in the original MATLAB toolbox but are not yet available in this Python version.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>develop new user material</issue_title>
<issue_description>develop jupyter notebooks with example use cases. readme documentation</issue_description>

<agent_instructions>create documentation includeing a README and an example jupyter notebook </agent_instructions>

Comments on the Issue (you are @copilot in this section)

@SBFRF @cmbaker94 might have something that would be helpful @SBFRF Cool! I can help if you have questions.

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Spicer Bak
Research Coastal Engineer
Field Research Facility, Duck NC
Sent from my personal phone

On Nov 4, 2021, at 3:59 PM, Christine M. Baker @.***> wrote:


@SBFRF Yes, I can work on putting together a Jupyter Notebook.

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You are receiving this because you were mentioned.
Reply to this email directly, view it on GitHub, or unsubscribe.</comment_new>

• Fixes develop new user material #6

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[Copilot]

Pull request overview

Adds user-facing documentation and an end-to-end example notebook for the pyDIWASP directional wave spectrum toolkit, plus a small robustness fix for EP['nfft'] handling in dirspec().

Changes:

• Expanded README.md with installation, quick start, API/data-structure docs, and method descriptions.
• Added examples/pyDIWASP_example.ipynb demonstrating synthetic data generation, spectrum computation, stats, and plotting.
• Fixed dirspec.py handling when EP['nfft'] is missing/empty; added repo .gitignore.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 4 comments.

File	Description
examples/pyDIWASP_example.ipynb	Adds a full workflow notebook demonstrating generating data, running dirspec, and plotting results.
dirspec.py	Fixes EP['nfft'] default/empty handling to avoid TypeError.
README.md	Replaces minimal README with comprehensive usage and reference documentation.
.gitignore	Adds standard Python/Jupyter/IDE ignores.

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[SBFRF]

update inline changes

[Copilot]

update inline changes

All inline suggestions have been applied:

• Line 12: Updated to "Supports IMLM and EMEP methods" (commit 86c7afa)
• Lines 125-126, 156, and 175-179: Removed references to unimplemented methods and clarified with note (commit 80c9a2e)
• Notebook import handling improved (commits 80c9a2e, 772058f)