amcharts4 не начинается с 0
У меня есть графики, которые не начинаются точно с 0.
Вот мой график с образцами данных
am4core.useTheme(am4themes_animated);
var chart = am4core.create("chartdiv", am4charts.XYChart);
chart.dataSource.url = "https://api.myjson.com/bins/109xmw";
chart.dataSource.events.on("parseended", function(ev) {
var data = ev.target.data;
data.sort(function(lhs, rhs) {
return lhs.time - rhs.time;
});
data.forEach(function(item) {
item.time *= 1000;
});
});
chart.numberFormatter.numberFormat = "#.0b";
chart.dateFormatter.inputDateFormat = "x";
var dateAxis = chart.xAxes.push(new am4charts.DateAxis());
dateAxis.dateFormats.setKey("minute", "d MMM, \nHH:mm");
dateAxis.periodChangeDateFormats.setKey("minute", "d MMM, \nHH:mm");
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
valueAxis.tooltip.disabled = true;
var series = chart.series.push(new am4charts.LineSeries());
series.dataFields.dateX = "time";
series.name = "Traffic out";
series.dataFields.valueY = "outDiffFormatted";
series.tooltipHTML = "<span style='font-size:14px; color:#000000;'><b>{valueY.value}/s</b></span>";
series.tooltipText = "[#000]{valueY.value}[/]";
series.tooltip.background.fill = am4core.color("#FFF");
series.tooltip.getStrokeFromObject = true;
series.tooltip.background.strokeWidth = 3;
series.tooltip.getFillFromObject = false;
series.fillOpacity = 0.6;
series.strokeWidth = 2;
series.stacked = false;
var series2 = chart.series.push(new am4charts.LineSeries());
series2.dataFields.dateX = "time";
series2.name = "Traffic in";
series2.dataFields.valueY = "inDiffFormatted";
series2.tooltipHTML = "<span style='font-size:14px; color:#000000;'><b>{valueY.value}/s</b></span>";
series2.tooltipText = "[#000]{valueY.value}[/]";
series2.tooltip.background.fill = am4core.color("#FFF");
series2.tooltip.getFillFromObject = false;
series2.tooltip.getStrokeFromObject = true;
series2.tooltip.background.strokeWidth = 3;
series2.sequencedInterpolation = true;
series2.fillOpacity = 0.5;
series2.stacked = false;
series2.strokeWidth = 2;
chart.cursor = new am4charts.XYCursor();
chart.cursor.xAxis = dateAxis;
chart.scrollbarX = new am4core.Scrollbar();
chart.legend = new am4charts.Legend();
chart.legend.position = "top";
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
#chartdiv {
width: 100%;
height: 500px;
}
<script src="https://www.amcharts.com/lib/4/core.js"></script>
<script src="https://www.amcharts.com/lib/4/charts.js"></script>
<script src="https://www.amcharts.com/lib/4/themes/animated.js"></script>
<div id="chartdiv"></div>
Я не понимаю, почему у меня есть этот пробел.
2 ответа
Решение
Задавать dateAxis.startLocation = 0.5;
а также dateAxis.endLocation = 0.5;
, это означает, что показывается половина первой и половина последней ячейки, благодаря чему серия проходит прямо до края области графика.
Подробнее об этом: https://www.amcharts.com/docs/v4/concepts/axes/positioning-axis-elements/
am4core.useTheme(am4themes_animated);
var chart = am4core.create("chartdiv", am4charts.XYChart);
chart.dataSource.url = "https://api.myjson.com/bins/109xmw";
chart.dataSource.events.on("parseended", function(ev) {
var data = ev.target.data;
data.sort(function(lhs, rhs) {
return lhs.time - rhs.time;
});
data.forEach(function(item) {
item.time *= 1000;
});
});
chart.numberFormatter.numberFormat = "#.0b";
chart.dateFormatter.inputDateFormat = "x";
var dateAxis = chart.xAxes.push(new am4charts.DateAxis());
dateAxis.dateFormats.setKey("minute", "d MMM, \nHH:mm");
dateAxis.periodChangeDateFormats.setKey("minute", "d MMM, \nHH:mm");
dateAxis.startLocation = 0.5;
dateAxis.endLocation = 0.5;
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
valueAxis.tooltip.disabled = true;
var series = chart.series.push(new am4charts.LineSeries());
series.dataFields.dateX = "time";
series.name = "Traffic out";
series.dataFields.valueY = "outDiffFormatted";
series.tooltipHTML = "<span style='font-size:14px; color:#000000;'><b>{valueY.value}/s</b></span>";
series.tooltipText = "[#000]{valueY.value}[/]";
series.tooltip.background.fill = am4core.color("#FFF");
series.tooltip.getStrokeFromObject = true;
series.tooltip.background.strokeWidth = 3;
series.tooltip.getFillFromObject = false;
series.fillOpacity = 0.6;
series.strokeWidth = 2;
series.stacked = false;
var series2 = chart.series.push(new am4charts.LineSeries());
series2.dataFields.dateX = "time";
series2.name = "Traffic in";
series2.dataFields.valueY = "inDiffFormatted";
series2.tooltipHTML = "<span style='font-size:14px; color:#000000;'><b>{valueY.value}/s</b></span>";
series2.tooltipText = "[#000]{valueY.value}[/]";
series2.tooltip.background.fill = am4core.color("#FFF");
series2.tooltip.getFillFromObject = false;
series2.tooltip.getStrokeFromObject = true;
series2.tooltip.background.strokeWidth = 3;
series2.sequencedInterpolation = true;
series2.fillOpacity = 0.5;
series2.stacked = false;
series2.strokeWidth = 2;
chart.cursor = new am4charts.XYCursor();
chart.cursor.xAxis = dateAxis;
chart.scrollbarX = new am4core.Scrollbar();
chart.legend = new am4charts.Legend();
chart.legend.position = "top";
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
#chartdiv {
width: 100%;
height: 320px;
}
<script src="https://www.amcharts.com/lib/4/core.js"></script>
<script src="https://www.amcharts.com/lib/4/charts.js"></script>
<script src="https://www.amcharts.com/lib/4/themes/animated.js"></script>
<div id="chartdiv"></div>
Вы можете попытаться форсировать его, установив для параметра strictMinMax значение true для каждого значения по оси, в котором вы хотите применить минимальное значение (конечно, вы должны убедиться, что вы устанавливаете минимум для каждой оси значений). http://docs.amcharts.com/3/javascriptcharts/ValueAxis