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What's New in DashPVA

This file tracks the latest changes, features, and improvements in DashPVA.

Latest Changes (March 2026)

New Features

  • Scan Monitor gives you an option to save or write temp
  • Universal log system, all outputs go to logs/general.log
  • ROI Plot dock: added Single Frame mode with axis projection (Proj X / Proj Y) to sum ROI counts along a chosen axis for the current frame
  • Database to replace Toml configuration for PV's

Fix

  • Profile import issue

Latest Changes (February 2026)

Added

  • ROI calculated for math between specific ROI's
    • Can then be exported to an h5 file
    • Creates an image or a plot of the calculated ROI's
  • Workbench supports all image file formats (.jpeg, .png, .bmp, .tif, .tiff)
  • Conda supports hdf5plugin

Change

  • All placeholder methods raise NotImplementedError

Fixed

  • Vmin/Vmax now syncs with histogram in 2d workbench

Latest Changes (January 2026)

  • Workbench now supports loading compressed datasets for smoother analysis and smaller storage footprints. For legacy files, a converter will be provided to update the file structure so compression loads seamlessly.

  • Added data file tree to view files from folder from atree or a singular file

Latest Changes (December 2025)

Merry Christmas

The Post-Analysis Workbench is a unified workspace that turns raw HKL data into an interactive 3D volume. It keeps 1D line profiles, 2D detector slices, and 3D voxel views in sync—select a point in any view and the others update instantly. This makes it easy to confirm peaks, filter noise in real time, and explore crystal symmetry from every angle.

Latest Changes (November 2025)

New Features

  • Selective compression support for large HDF5 datasets using Blosc (LZ4), applied only where it provides clear benefits.
  • Compatible file structure for compressed data, ensuring seamless loading via utils.hdf5_loader.HDF5Loader.

Improvements

  • Faster load times and reduced disk footprint for large arrays written to /entry/data/data.
  • Graceful handling when compression plugins are unavailable (falls back to uncompressed writes).
  • Clearer loading messages and error reporting during data import.

Usage

  • Files produced by compress.py can be loaded with:
    • HDF5Loader.load_h5_to_3d(path) for points + intensities
    • HDF5Loader.load_h5_volume_3d(path) for volume workflows

Latest Changes (October 2025)

New Features

  • Launcher: Force-shutdown dialog now lists all running modules with their process IDs (PIDs) for full visibility before termination.
  • HKL Slice 3D Tool: Added a 2D viewer under Tools to quickly inspect any 3D slice in 2D.

Bug Fixes and Improvements

  • HKL Range Handling: Adjusted HKL index/range bounds and validation in HKL 3D Viewer and HKL 3D Slicer to ensure accurate limits and improved user feedback.
  • Launcher: Enhanced process tracking with clearer status text and contextual enablement of “Shutdown All”.

Latest Changes (September 2025)

New Features

Command Line Interface (CLI)

  • NEW: Introduced unified CLI interface via dashpva.py
    • python dashpva.py run - Launch dashpva
    • python dashpva.py hkl3d - Launch HKL 3D Viewer
    • python dashpva.py slice3d - Launch HKL 3D Slicer (standalone mode)
    • python dashpva.py detector - Launch Area Detector Viewer
    • python dashpva.py setup - Run PVA workflow setup (with optional --sim flag)

3D Visualization Enhancements

  • NEW: HKL 3D Slice Window for interactive 3D point cloud visualization
  • NEW: Standalone HKL 3D Slicer mode for offline data analysis
  • ENHANCED: Loading indicators for 3D parent slice window data loading
  • ENHANCED: Configurable reduction factor before loading data
  • ENHANCED: Window disabling during data loading operations

Data Loading and Processing

  • NEW: HDF5 data loading capabilities
  • NEW: Slice extraction and analysis tools
  • NEW: Interactive 3D visualization with real-time slicing
  • ENHANCED: Improved data caching and processing workflows

User Interface Improvements

  • NEW: SizeManager for automatic and clean window scaling on resize
  • ENHANCED: Area detector viewer now includes SizeManager
  • IMPROVED: Replaced old font scaling with SizeManager system

2D Slice viewing in 3d viewer

View the 3D sliced data in 2d

Bug Fixes and Improvements

Configuration and Setup

  • FIXED: PV simulator server size can now be changed through GUI
  • UPDATED: CLI setup command changed from sim to setup for setup dialog
  • IMPROVED: Path management for parent directory navigation in area detector

Performance and Stability

  • OPTIMIZED: Performance improvements for large dataset handling
  • ENHANCED: Better memory management for 3D visualization
  • IMPROVED: More responsive UI during data loading operations

Code Quality

  • CLEANUP: Commented out unused LoadDataHandler and PerformanceDialog utilities
  • REFACTORED: Improved code organization and structure
  • ADDED: Comprehensive .gitignore file for better repository management

How to Use This File

This changelog follows these conventions:

  • New Features: Major new functionality and capabilities
  • Bug Fixes and Improvements: Fixes, optimizations, and enhancements
  • Documentation: Updates to documentation and guides
  • Breaking Changes: Changes that may affect existing workflows

Getting Started with New Features

Using the New CLI

# Get help on all available commands
python dashpva.py --help

# Launch different components
python dashpva.py setup      # Configure the system
python dashpva.py detector   # Area detector viewer
python dashpva.py hkl3d      # 3D visualization
python dashpva.py slice3d    # Standalone 3D slicer

3D Visualization

The new 3D visualization tools support:

  • Interactive point cloud visualization
  • Real-time slicing and analysis
  • HDF5 file loading
  • Performance optimization for large datasets

For detailed instructions, see RUN_INSTRUCTIONS.md.

Previous Versions

This is the initial version of the What's New file. Future releases will be documented here.