rampo 0.5.0

GUI application for Raman spectroscopy analysis in high-pressure experiments.

RamPo

RamPo is a desktop application for processing Raman spectroscopy data, with a workflow adapted from PeakPo and refocused for high-pressure Raman experiments.

Current Scope

RamPo is designed around Raman spectroscopy for high pressure research.

Key points:

• input data: .spe Raman files
• 2D detector view: CCD image
• reference library concept: RAPO files for pressure-dependent Raman mode shifts (under development)
• session/save model: JSON-based snapshots stored in <filename>-rampo/

Main Features

• open and navigate SPE files
• convert wavelength-calibrated SPE data to Raman shift using the excitation laser wavelength
• define CCD row ROI and extract summed spectra from the ROI
• apply despike + Savitzky-Golay smoothing
• fit Raman background with polynomial fitting using user-defined background areas
• save background, bg-subtracted, smoothed, and ROI-derived spectra
• compare spectra with Diff
• process file sets with Map and Seq
• display and manage Waterfall spectra
• perform PeakFit analysis
• save and restore numbered backup snapshots

Installation

RamPo requires Python 3.10 or newer.

pip install rampo

Running RamPo

rampo

Typical Workflow

1. Open an .spe file by clicking Open SPE button.
2. Set the excitation laser wavelength.
3. In the top toolbar, click the CCD button and the zoom-out button to rescale the spectrum display.
4. In the Spectrum > Process tab, click Select ROI and draw a rectangle in the top image to define the ROI for spectrum integration.
5. In the same tab, adjust the parameters in Smoothing if smoothing is needed.
6. In the same tab, to define the background, click Add area and draw a rectangle on the lower spectrum plot to mark a range for background data points. Repeat this for several areas, ideally including both the left and right ends of the spectrum. Once you have selected enough background points, click Fig BG to fit the background. Check the Bg show box to display the fit, and check BgSub to subtract the background.
7. For mapping, open the Map tab and click Load SPE files to select the map files. For ASU data, make sure you choose *-raw.spe files. Select Row-major for ASU data and Snake for APS data in the dropdown menu. Make sure Nx and Ny are correctly detected by RamPo. If not, update the values and then click Compute Map.
8. In the Map tab, click Select ROI to choose the spectral range where intensity mapping will be performed.
9. Use Diff, Seq, Waterfall, or PeakFit tools as needed.
10. Press Save to create a numbered snapshot in the session folder.

Save / Restore Behavior

RamPo saves analysis state into a folder named:

<filename>-rampo

Inside that folder, numbered snapshot folders are created:

0/
1/
2/
...

Each numbered backup is intended to be self-contained and stores the JSON session state together with processed outputs such as spectra and related analysis files.

Notes

• Some disabled UI elements are intentionally kept visible as placeholders for future development.

Citation

RamPo - Raman spectroscopy analysis software for high-pressure experiments.

The citation string shipped with the package is defined in rampo/rampo/citation.py.