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Integrating Vue ECharts

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Julian Knight edited this page Mar 1, 2021 · 6 revisions

UPDATE: 2021-03-01 - There appear to be some issues with this charting library. Firstly, they have moved their current version to only work with VueJS v3. Since VueJS v3 is not yet feature complete and there are many Vue components that don't yet work with it, this would seem to be severely premature.

The last version of eCharts that works with Vue v2 is v5.0.2. More information available in this forum post.

The website gives an alternative for making later versions work which is to use the VueJS composition-api library @vue/composition-api.

In addition, it appears that ECharts doesn't work with Android Chrome at this time.

Here is a very simple example of producing a bar chart using Vue-ECharts which integrates ECHARTS with VueJS along with uibuilder v2, VueJS and bootstrap-vue.

Add an instance of uibuilder to your flows and replace the index.html and index.js files with the code below.

I'm loading the chart libraries using a CDN here, the next step would be to install the two packages using uibuilder's npm interface.

The example flow sends a random number to the app every 10 seconds which is used to update the chart.

Note that the following flow also includes 2 comment nodes containing the html and javascript.

flow

[{"id":"df81cc9e.a9171","type":"inject","z":"18cb249f.38bafb","name":"repeat every 10s","topic":"","payload":"","payloadType":"date","repeat":"10","crontab":"","once":false,"onceDelay":0.1,"x":130,"y":80,"wires":[["6ca36476.d0597c"]]},{"id":"76678044.5aaeb","type":"debug","z":"18cb249f.38bafb","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":650,"y":60,"wires":[]},{"id":"bd9b5761.fb4918","type":"debug","z":"18cb249f.38bafb","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":630,"y":100,"wires":[]},{"id":"b18a50dd.f7e5c","type":"uibuilder","z":"18cb249f.38bafb","name":"","topic":"","url":"chart","fwdInMessages":false,"allowScripts":false,"allowStyles":false,"copyIndex":true,"showfolder":false,"x":490,"y":80,"wires":[["76678044.5aaeb"],["bd9b5761.fb4918"]]},{"id":"6ca36476.d0597c","type":"change","z":"18cb249f.38bafb","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"($random()*10)+($random()*10)\t","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":320,"y":80,"wires":[["b18a50dd.f7e5c"]]},{"id":"3ebfbce9.6ccd84","type":"comment","z":"18cb249f.38bafb","name":"html","info":"copy the following and paste into `index.html`\n\n```html\n<!doctype html><html lang=\"en\"><head>\n    <meta charset=\"utf-8\">\n    <meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge\">\n    <meta name=\"viewport\" content=\"width=device-width, minimum-scale=1, initial-scale=1, user-scalable=yes\">\n\n    <title>eCharts/VueJS Example - Node-RED UI Builder</title>\n    <meta name=\"description\" content=\"Node-RED UI Builder - eCharts/VueJS Example\">\n\n    <link rel=\"icon\" href=\"./images/node-blue.ico\">\n\n    <link type=\"text/css\" rel=\"stylesheet\" href=\"../uibuilder/vendor/bootstrap/dist/css/bootstrap.min.css\" />\n    <link type=\"text/css\" rel=\"stylesheet\" href=\"../uibuilder/vendor/bootstrap-vue/dist/bootstrap-vue.css\" />\n\n    <link rel=\"stylesheet\" href=\"./index.css\" media=\"all\">\n</head><body>\n    <div id=\"app\">\n        <b-container id=\"app_container\">\n\n            <h1>\n                Example of using <a href=\"https://github.com/ecomfe/vue-echarts?ref=madewithvuejs.com\" target=\"_blank\">Vue-ECharts</a>\n                with uibuilder, VueJS and bootstrap-vue\n            </h1>\n\n            <b-row>\n                <b-card header=\"Bar Chart\" border-variant=\"primary\" header-bg-variant=\"primary\" header-text-variant=\"white\" align=\"center\">\n                        <v-chart :options=\"ecOptionsBar\"/>\n                </b-card>\n\n            </b-row>\n\n        </b-container>\n    </div>\n\n    <script src=\"../uibuilder/vendor/socket.io/socket.io.js\"></script>\n    <script src=\"../uibuilder/vendor/vue/dist/vue.min.js\"></script>\n    <script src=\"../uibuilder/vendor/bootstrap-vue/dist/bootstrap-vue.js\"></script>\n\n    <!-- Loading from CDN, use uibuilder to install packages and change to vendor links -->\n    <script src=\"https://cdn.jsdelivr.net/npm/[email protected]/dist/echarts.js\"></script>\n    <script src=\"https://cdn.jsdelivr.net/npm/[email protected]\"></script>\n\n    <script src=\"./uibuilderfe.min.js\"></script> <!--    //prod version -->\n    <script src=\"./index.js\"></script>\n\n</body></html>\n```","x":370,"y":40,"wires":[]},{"id":"7254bbb9.903ce4","type":"comment","z":"18cb249f.38bafb","name":"JavaScript","info":"Copy the following and paste into `index.js`\n\n```javascript\n/* jshint browser: true, esversion: 5 */\n/* globals document,Vue,window,uibuilder,VueECharts */\n// @ts-nocheck\n/*\n  Copyright (c) 2019 Julian Knight (Totally Information)\n\n  Licensed under the Apache License, Version 2.0 (the \"License\");\n  you may not use this file except in compliance with the License.\n  You may obtain a copy of the License at\n\n  http://www.apache.org/licenses/LICENSE-2.0\n\n  Unless required by applicable law or agreed to in writing, software\n  distributed under the License is distributed on an \"AS IS\" BASIS,\n  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n  See the License for the specific language governing permissions and\n  limitations under the License.\n*/\n'use strict'\n\n/** @see https://github.com/TotallyInformation/node-red-contrib-uibuilder/wiki/Front-End-Library---available-properties-and-methods */\n\n/** Reference the component (removes need for a build step with import) */\nVue.component('v-chart', VueECharts)\n\n// eslint-disable-next-line no-unused-vars\nvar app1 = new Vue({\n    el: '#app',\n    data: {\n        // Data for bar chart\n        ecOptionsBar: {\n            title: {\n                text: 'ECharts entry example',\n            },\n            tooltip: {},\n            legend: {\n                data:['Sales'],\n            },\n            xAxis: {\n                data: ['shirt','cardign','chiffon shirt','pants','heels','socks'],\n            },\n            yAxis: {},\n            series: [{\n                name: 'Sales',\n                type: 'bar',\n                data: [5, 20, 36, 10, 10, 20],\n            }],\n        },\n\n    }, // --- End of data --- //\n    computed: {\n    }, // --- End of computed --- //\n    methods: {\n    }, // --- End of methods --- //\n\n    // Available hooks: init,mounted,updated,destroyed\n    mounted: function(){\n        /** **REQUIRED** Start uibuilder comms with Node-RED @since v2.0.0-dev3\n         * Pass the namespace and ioPath variables if hosting page is not in the instance root folder\n         * e.g. If you get continual `uibuilderfe:ioSetup: SOCKET CONNECT ERROR` error messages.\n         * e.g. uibuilder.start('/nr/uib', '/nr/uibuilder/vendor/socket.io') // change to use your paths/names\n         */\n        uibuilder.start()\n\n        var vueApp = this\n\n        // Process new messages from Node-RED\n        uibuilder.onChange('msg', function (newVal) {\n            if ( typeof newVal.payload === 'number' ){\n                // Add new element\n                vueApp.ecOptionsBar.series[0].data.push(newVal.payload)\n                // Lose the first element\n                vueApp.ecOptionsBar.series[0].data.shift()\n                //console.log(vueApp.ecOptionsBar.series[0].data)\n            }\n        })\n\n    } // --- End of mounted hook --- //\n\n}) // --- End of app1 --- //\n\n// EOF\n```\n","x":480,"y":40,"wires":[]}]

html

<!doctype html><html lang="en"><head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, minimum-scale=1, initial-scale=1, user-scalable=yes">

    <title>eCharts/VueJS Example - Node-RED UI Builder</title>
    <meta name="description" content="Node-RED UI Builder - eCharts/VueJS Example">

    <link rel="icon" href="./images/node-blue.ico">

    <link type="text/css" rel="stylesheet" href="../uibuilder/vendor/bootstrap/dist/css/bootstrap.min.css" />
    <link type="text/css" rel="stylesheet" href="../uibuilder/vendor/bootstrap-vue/dist/bootstrap-vue.css" />

    <link rel="stylesheet" href="./index.css" media="all">
</head><body>
    <div id="app">
        <b-container id="app_container">

            <h1>
                Example of using <a href="https://github.com/ecomfe/vue-echarts?ref=madewithvuejs.com" target="_blank">Vue-ECharts</a>
                with uibuilder, VueJS and bootstrap-vue
            </h1>

            <b-row>
                <b-card header="Bar Chart" border-variant="primary" header-bg-variant="primary" header-text-variant="white" align="center">
                        <v-chart :options="ecOptionsBar"/>
                </b-card>

            </b-row>

        </b-container>
    </div>

    <script src="../uibuilder/vendor/socket.io/socket.io.js"></script>
    <script src="../uibuilder/vendor/vue/dist/vue.min.js"></script>
    <script src="../uibuilder/vendor/bootstrap-vue/dist/bootstrap-vue.js"></script>

    <!-- Loading from CDN, use uibuilder to install packages and change to vendor links -->
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/echarts.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>

    <script src="./uibuilderfe.min.js"></script> <!--    //prod version -->
    <script src="./index.js"></script>

</body></html>

javascript

/* jshint browser: true, esversion: 5 */
/* globals document,Vue,window,uibuilder,VueECharts */
// @ts-nocheck
/*
  Copyright (c) 2019 Julian Knight (Totally Information)

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/
'use strict'

/** @see https://github.com/TotallyInformation/node-red-contrib-uibuilder/wiki/Front-End-Library---available-properties-and-methods */

/** Reference the component (removes need for a build step with import) */
Vue.component('v-chart', VueECharts)

// eslint-disable-next-line no-unused-vars
var app1 = new Vue({
    el: '#app',
    data: {
        // Data for bar chart
        ecOptionsBar: {
            title: {
                text: 'ECharts entry example',
            },
            tooltip: {},
            legend: {
                data:['Sales'],
            },
            xAxis: {
                data: ['shirt','cardign','chiffon shirt','pants','heels','socks'],
            },
            yAxis: {},
            series: [{
                name: 'Sales',
                type: 'bar',
                data: [5, 20, 36, 10, 10, 20],
            }],
        },

    }, // --- End of data --- //
    computed: {
    }, // --- End of computed --- //
    methods: {
    }, // --- End of methods --- //

    // Available hooks: init,mounted,updated,destroyed
    mounted: function(){
        /** **REQUIRED** Start uibuilder comms with Node-RED @since v2.0.0-dev3
         * Pass the namespace and ioPath variables if hosting page is not in the instance root folder
         * e.g. If you get continual `uibuilderfe:ioSetup: SOCKET CONNECT ERROR` error messages.
         * e.g. uibuilder.start('/nr/uib', '/nr/uibuilder/vendor/socket.io') // change to use your paths/names
         */
        uibuilder.start()

        var vueApp = this

        // Process new messages from Node-RED
        uibuilder.onChange('msg', function (newVal) {
            if ( typeof newVal.payload === 'number' ){
                // Add new element
                vueApp.ecOptionsBar.series[0].data.push(newVal.payload)
                // Lose the first element
                vueApp.ecOptionsBar.series[0].data.shift()
                //console.log(vueApp.ecOptionsBar.series[0].data)
            }
        })

    } // --- End of mounted hook --- //

}) // --- End of app1 --- //

// EOF

Please feel free to add comments to the page (clearly mark with your initials & please add a commit msg so we know what has changed). You can contact me in the Discourse forum, or raise an issue here in GitHub! I will make sure all comments & suggestions are represented here.

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