streamlit-flowsheet 0.2.1

A Streamlit component for rendering process flowsheet diagrams with interactive selection

Streamlit Flowsheet Component

A Streamlit component for rendering interactive process flowsheet diagrams with node selection capabilities.

Features

• Interactive process flowsheet visualization with ReactFlow
• Node selection with detailed properties panel
• Collapsible navigation panel for easy node browsing
• Theme-aware (automatically adapts to Streamlit light/dark themes)
• Configurable display options (navigation panel, properties panel, node borders)
• Returns selected node data to Streamlit
• NEW: Support for multiple data formats (Model Revision API, legacy formats)
• NEW: Array property values with smart formatting
• NEW: Structured unit support with quantity information
• NEW: Full backward compatibility with existing flowsheet formats

Installation

pip install streamlit-flowsheet

Usage

Basic Usage

import streamlit as st
from streamlit_flowsheet import render_flowsheet
import json

# Load flowsheet data
with open("flowsheet.json", "r") as f:
    flowsheet_data = json.load(f)

# Render the flowsheet - component handles format detection automatically
selected_node = render_flowsheet(
    data=flowsheet_data,
    show_navigation_panel=True,
    show_properties=True,
    show_border=True,
    height=800
)

# Handle selection
if selected_node:
    st.write(f"Selected: {selected_node[0]['name']}")

Supported Data Formats

The component automatically detects and handles multiple data formats:

1. Model Revision Format (New)

{
  "modelRevisionExternalId": "my-model-1",
  "flowsheets": [
    {
      "simulatorObjectNodes": [...],
      "simulatorObjectEdges": [...],
      "thermodynamics": {...}
    }
  ],
  "dataSetId": 123,
  "createdTime": 1234567890,
  "lastUpdatedTime": 1234567890
}

2. Direct Flowsheet Format

{
  "simulatorObjectNodes": [...],
  "simulatorObjectEdges": [...],
  "thermodynamics": {...}
}

3. Legacy Format

{
  "items": [
    {
      "flowsheet": {
        "simulatorObjectNodes": [...],
        "simulatorObjectEdges": [...]
      }
    }
  ]
}

Property Display Features

The component now supports:

• Array Values: Automatically formats and truncates long arrays

  • [1.2, 2.3, 3.4] for short arrays
  • [1.2, ..., 9.8] (100 items) for long arrays

• Scientific Notation: Auto-formats extreme values

  • Numbers < 0.0001 or > 1,000,000 use exponential notation

• Structured Units: Supports both simple and complex unit formats

  {
    "name": "Temperature",
    "value": 363.15,
    "unit": {
      "name": "K",
      "quantity": "temperature"
    }
  }
  

Examples

See the examples/ folder for complete examples:

• iise.json - IISE format flowsheet
• dwsim.json - DWSIM format flowsheet (large, complex example)

Run the example app:

streamlit run example_app.py

Parameters

• data (dict): Flowsheet data in any supported format (automatically detected)
  • Model Revision format with modelRevisionExternalId and flowsheets[]
  • Direct flowsheet format with simulatorObjectNodes and simulatorObjectEdges
  • Legacy format with items[] array
• show_navigation_panel (bool): Show/hide the left navigation panel (default: True)
• show_properties (bool): Show/hide the properties panel on node selection (default: True)
• show_border (bool): Show/hide node borders (default: True)
• height (int): Component height in pixels (default: 800)

Data Format Details

Edges

Supports both old and new edge formats:

• New: sourceId, targetId, connectionType
• Legacy: source, target, sourcePort, targetPort

Reference Objects

Supports multiple reference object formats:

• Legacy: { "address": "TANK.001.Volume" }
• IISE: { "link": "Source.F", "components": "H2O|CO2|..." }
• DWSIM: { "objectName": "Stream1", "objectType": "Material Stream", "objectProperty": "PROP_MS_0" }

Units

Supports both simple and structured units:

• Simple: "unit": "K"
• Structured: "unit": { "name": "K", "quantity": "temperature" }

Development

Setup

cd streamlit-flowsheet
uv sync --dev
cd streamlit_flowsheet/frontend
npm install

Build Frontend

cd streamlit_flowsheet/frontend
npm run build

Build Package

uv build

License

MIT