Seismic Data Waveform Plotting Program

Seismic waveform plotting is a common requirement in seismology and geological engineering. This MATLAB-developed seismic waveform plotting program efficiently displays trends in seismic signals, enabling researchers to analyze seismic wave characteristics.

First, the program reads seismic data, typically stored as time-series data in formats like SEED or other standard seismic data formats. MATLAB provides powerful data import functions( such as `readtable` or `seismic` format-specific loaders) to load such data seamlessly. After loading, the program preprocesses data by applying noise removal, filtering (e.g., using `filter` or `designfilt` functions), or normalization to enhance waveform clarity and signal quality.

Waveform plotting primarily utilizes MATLAB's plotting functions, such as `plot` or `line`, with the horizontal axis representing time and the vertical axis indicating amplitude or acceleration. The program supports multi-channel data visualization, enabling simultaneous plotting of P-waves, S-waves, and surface waves. For analytical convenience, the program may include zooming, panning, and peak annotation features (implemented via interactive plot tools or custom callback functions) to help users identify key data points.

Additionally, to enhance user experience, the program can integrate a GUI (Graphical User Interface)—developed using MATLAB's App Designer or GUIDE—providing interactive functionalities like file selection, waveform adjustments, and color customization for intuitive operation. The output waveforms can be saved in various formats (e.g., PNG, PDF) using `saveas` or `print` functions, facilitating use in reports or academic papers.

The program's key advantages are its user-friendly operation and applicability for seismologists and engineers, making it suitable for direct data analysis and educational demonstrations.