Develop an industrial chain knowledge graph using Vue3.

Developing an Industry Chain Knowledge Graph with Vue3 and relation-graph

Example online link: https://www.relation-graph.com/#/demo/vue2?id=industry-chain

In today's business and technological environment, an industry chain knowledge graph is a powerful tool that helps businesses and researchers understand and analyze complex industry relationships and processes. This article will introduce how to develop a dynamic industry chain knowledge graph using Vue3 and the relation-graph component library. This type of graph not only showcases the hierarchical structure of an industry chain but also allows interactive exploration of the connections between different components.

Project Setup and Dependency Installation

Before getting started, ensure that your development environment has Vue3 installed. Next, install the relation-graph component library via npm:

npm install relation-graph-vue3

This library provides rich chart layout and customization features, making it ideal for building complex knowledge graphs.

Component Configuration

In a Vue component, import relation-graph and configure the basic chart options. We will use the "folder" layout to display the hierarchical structure of the industry chain:

<script lang="ts" setup>
import { ref, onMounted } from 'vue';
import RelationGraph from 'relation-graph-vue3';
import type { RGOptions, RelationGraphComponent } from 'relation-graph-vue3';

const graphRef = ref<RelationGraphComponent>();

const graphOptions: RGOptions = {
    layout: {
        layoutName: 'folder', // Hierarchical layout
        from: 'top', // Expand from top to bottom
        levelDistance: ['250'] // Level distance
    },
    defaultNodeShape: 1,
    defaultNodeWidth: 100,
    defaultLineColor: 'rgba(0, 186, 189, 1)',
    defaultNodeColor: 'rgba(0, 206, 209, 1)'
};
</script>

Data Loading and Graph Rendering

Data for an industry chain knowledge graph typically includes multiple levels of nodes and connections between these nodes. We define a set of JSON data to simulate the structure of an industry chain:

const showGraph = async () => {
    const __graph_json_data = {
        nodes: [
            { id: '1', text: 'Semiconductor Manufacturing', children: [
                { id: '2', text: 'Packaging Testing', children: [
                    { id: '3', text: 'Testing Equipment' },
                    { id: '4', text: 'Material Supply' }
                ]},
                { id: '5', text: 'Chip Design', children: [
                    { id: '6', text: 'Analog Chips' },
                    { id: '7', text: 'Digital Chips' }
                ]}
            ]}
        ],
        lines: [
            { from: '1', to: '2' },
            { from: '2', to: '3' },
            { from: '2', to: '4' },
            { from: '1', to: '5' },
            { from: '5', to: '6' },
            { from: '5', to: '7' }
        ]
    };

    const graphInstance = graphRef.value?.getInstance();
    if (graphInstance) {
        await graphInstance.setJsonData(__graph_json_data);
        await graphInstance.moveToCenter();
        await graphInstance.zoomToFit();
    }
};

Enhancing Interactivity

In a knowledge graph, click events on nodes and lines can be used to display more information or enable other interactions:

const onNodeClick = (node) => {
    console.log('Clicked node:', node.text);
    // Here, you can open a modal to display detailed information or link to related resources
};

Component Template and Styling

In the Vue template, use the RelationGraph component to render the chart and customize the appearance of nodes using slots:

<template>
  <div style="height:calc(100vh);">
    <RelationGraph ref="graphRef" :options="graphOptions">
      <template #node="{node}">
        <div :class`'my-industy-node my-industy-node-level-' + node.lot.level`">
          <div class="my-card-header">{{ node.lot.level === 0 ? 'Industry Chain Name' : node.lot.level === 1 ? 'Industry Link' : 'Subsection Link' }}</div>
          <div class="my-card-body">{{ node.text }}</div>
        </div>
      </template>
    </RelationGraph>
  </div>
</template>

Conclusion

By using Vue3 and relation-graph, we can create a feature-rich, interactive industry chain knowledge graph. This not only helps business and development professionals understand the detailed structure of an industry chain but also serves as a decision support tool to analyze key nodes and potential risks within the chain. The hierarchical structure and interactive features of this graph make it a powerful tool for understanding and analyzing complex industry relationships.

More Resources:

• GitHub Repository
• Official Website
• Online Examples
• Documentation

Explore these resources to delve deeper into the functionality of relation-graph and apply it to your projects, providing users with an intuitive and information-rich visual experience.