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iobroker.chartjs

v0.0.2

Published

chartjs

Readme

Logo

ioBroker.chartjs

NPM version Downloads Number of Installations (latest) Number of Installations (stable) Dependency Status Known Vulnerabilities

NPM

Chart.JS adapter for ioBroker

Based on https://github.com/SeanSobey/ChartjsNodeCanvas - a Node JS renderer for Chart.js using canvas.

Getting started

Example script:

const chartColors = {
    black: 'rgb(0, 0, 0)',
    white: 'rgb(255, 255, 255)', 
    red: 'rgb(255, 0, 0)',
    pink: 'rgb(255, 220, 220)',
    pink2: 'rgb(255, 150, 150)',
    orange: 'rgb(255, 159, 64)',
    yellow: 'rgb(255, 255, 0)',
    green: 'rgb(75, 192, 192)',
    blue: 'rgb(54, 162, 235)',
    purple: 'rgb(153, 102, 255)',
    grey: 'rgb(201, 203, 207)',
    violet: 'rgb(238,130,238)',
};


// переменная, куда сохраним данные
// произвольные данные, похожие на те, что хранятся в истории
var пример = [
    {"val":3,"ack":1,"ts":1539063874301},
    {"val":5,"ack":1,"ts":1539063884299},
    {"val":5.3,"ack":1,"ts":1539063894299},
    {"val":3.39,"ack":1,"ts":1539063904301},
    {"val":5.6,"ack":1,"ts":1539063914300},
    {"val":-1.3,"ack":1,"ts":1539063924300},
    {"val":-6.3,"ack":1,"ts":1539063934302},
    {"val":1.23,"ack":1,"ts":1539063944301},
];

const chartJsOptions = {
    // тип графика - линейный
    type: 'line',
    data: {
        // список наборов данных
        datasets: [
            {
                // заголовок ряда 
                label: 'тест',
                // цвет
                //backgroundColor: chartColors.white,
                backgroundColor: 'transparent',
                borderColor: chartColors.red,
                // размер точек
                pointRadius: 3,
                // ширина линии графика
                borderWidth: 3,
                // достанем данные из переменной 'пример' и оставим только значение и время изменения
                data: пример.map((item) => {
                    return {y: item.val, t: new Date(item.ts)}
                }),
                // заливка графика - нет
                fill: false,
                cubicInterpolationMode: 'monotone',
                borderCapStyle: 'round'
            }
        ]
    },
    options: {
        // настройка легенды
        legend: {
            labels: {
                // размер шрифта
                fontSize: 20,
            },
        },
        layout: {
            padding: 10,
            lineHeight: 1
        },
        linearGradientLine: true,
        // оси координат
        scales: {
            // оси X
            xAxes: [{
                // тип - временная ось
                type: 'time',  
                display: true,
                // метка оси
                scaleLabel: {
                    display: true,
                    labelString: 'Время'
                },
            }],
            // оси Y
            yAxes: [{
                // тип - линейная
                type: 'linear',
                display: true,
                // метка оси
                scaleLabel: {
                    display: true,
                    labelString: 'Температура'
                },
                position: 'left',
            }]
        }
    }
};

// вызовем функцию построения графика
// для этого отправим сообщение в инстанс адаптера
sendTo('chartjs.0', 'gen2file', {
    width: 800,                 // ширина картинки
    height: 400,                // высота картинки
    config: chartJsOptions,     // конфигурация графика
    filename: "d:\\test.png"    // файл, куда сохранить результат
}, () => {
    console.log('ok');
});

History example:

const chartColors = {
    black: 'rgb(0, 0, 0)',
    white: 'rgb(255, 255, 255)', 
    red: 'rgb(255, 0, 0)',
    pink: 'rgb(255, 220, 220)',
    pink2: 'rgb(255, 150, 150)',
    orange: 'rgb(255, 159, 64)',
    yellow: 'rgb(255, 255, 0)',
    green: 'rgb(75, 192, 192)',
    blue: 'rgb(54, 162, 235)',
    purple: 'rgb(153, 102, 255)',
    grey: 'rgb(201, 203, 207)',
    violet: 'rgb(238,130,238)',
};

const end = new Date().getTime(),
      start = end - 3600000*(1); // 1 = час назад

const chartJsOptions = {
    // тип графика - линейный
    type: 'line',
    data: {
        // список наборов данных
        datasets: [
            {
                // заголовок ряда 
                label: 'тест 2',
                // цвет
                //backgroundColor: chartColors.white,
                backgroundColor: 'transparent',
                borderColor: chartColors.red,
                // размер точек
                pointRadius: 3,
                // ширина линии графика
                borderWidth: 3,
                // достанем данные из истории
                data: {
                    type: 'history',          // тип получаемых данных
                    source: 'history.0',      // инстанс, откуда брать данные, можно указать и 'sql.0'
                    id: '0_userdata.0.test',  // идентификатор состояния
                    start: start,             // начало периода
                    end: end,                 // окончания периода
                },
                // заливка графика - нет
                fill: false,
                cubicInterpolationMode: 'monotone',
                borderCapStyle: 'round'
            }
        ]
    },
    options: {
        // настройка легенды
        legend: {
            labels: {
                // размер шрифта
                fontSize: 20,
            },
        },
        layout: {
            padding: 10,
            lineHeight: 1
        },
        linearGradientLine: true,
        // оси координат
        scales: {
            // оси X
            xAxes: [{
                // тип - временная ось
                type: 'time',  
                display: true,
                // метка оси
                scaleLabel: {
                    display: true,
                    labelString: 'Время'
                },
            }],
            // оси Y
            yAxes: [{
                // тип - линейная
                type: 'linear',
                display: true,
                // метка оси
                scaleLabel: {
                    display: true,
                    labelString: 'Температура'
                },
                position: 'left',
            }]
        }
    }
};

// вызовем функцию построения графика
// для этого отправим сообщение в инстанс адаптера
sendTo('chartjs.0', 'gen2file', {
    width: 800,                 // ширина картинки
    height: 400,                // высота картинки
    config: chartJsOptions,     // конфигурация графика
    filename: "d:\\test1.png"   // файл, куда сохранить результат
}, () => {
    console.log('ok');
});

Changelog

0.0.2

  • (kirovilya) Allow to use state's history data

0.0.1

  • (kirovilya) initial release

License

MIT License

Copyright (c) 2020 Kirov Ilya [email protected]

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.