我正在尝试使用 Highchart 加载多种图表类型。
function loadChartDataMultiViz(variables, chartTypes, chartId) {
$.ajax({
url: '/datacap/site/getdatamulti',
data: { variable: variables }, // Pass comma-separated variables
success: function(response) {
if (Object.keys(response).length > 0) {
var series = [];
var categories = Object.keys(response); // Extract years for x-axis
var titles = [];
chartTypes = chartTypes.split(',').map(type => type.trim());
// Create a separate series for each chart type
chartTypes.forEach(chartType => {
if (chartType === 'pie') {
// For pie charts, format the series differently
series.push({
type: chartType,
name: 'Data', // Generic name for the pie chart
colorByPoint: true,
data: categories.map(year => {
return {
name: year, // Use year or any relevant label for each slice
y: response[year][Object.keys(response[year])[0]].value || 0 // Use value for each slice, default to 0 if missing
};
})
});
// Collect titles for pie chart
titles.push(response[categories[0]][Object.keys(response[categories[0]])[0]].title);
} else {
// For other chart types (e.g., line, bar), create a series for each variable
for (const variable of Object.keys(response[categories[0]])) {
const data = categories.map(year => {
return response[year][variable] ? response[year][variable].value : 0; // Default to 0 if not available
});
series.push({
type: chartType,
name: variable, // Use the variable name for the series
data: data,
});
// Collect titles for each variable
if (response[categories[0]][variable] && response[categories[0]][variable].title) {
titles.push(response[categories[0]][variable].title);
}
}
}
});
Highcharts.chart(chartId, {
chart: {
type: 'container' // Use a container chart to hold multiple series
},
title: {
text: titles.join(',<br>'), // Combine all variable titles with a comma
align: 'left'
},
xAxis: {
categories: categories,
title: {
text: 'Year' // Example label for x-axis
}
},
yAxis: {
title: {
text: response[categories[0]][Object.keys(response[categories[0]])[0]].unit || 'Values'
}
},
series: series, // Pass the constructed series (formatted for pie or other charts)
annotations: [],
plotOptions: {
area: {
marker: {
enabled: false,
symbol: 'circle',
radius: 2,
states: {
hover: {
enabled: true
}
}
}
},
scatter: {
tooltip: {
pointFormatter: function () {
// Customize the tooltip for scatter points
return 'Year: <b>' + this.category + '</b><br>' +
'Value: <b>' + this.y + '</b>';
}
},
lineWidth: 0, // Remove any connecting lines for the scatter plot
marker: {
radius: 5 // You can adjust the marker size here
}
}
},
}, function (chart) {
// Add annotations after the chart is created
const data = chart.series[0].data.map(point => point.y);
addAnnotations(chart, data, 'highest'); // Annotate highest value
addAnnotations(chart, data, 'latest'); // Annotate latest value
});
}
}
});
}
我的问题是，为什么 3 个变量的数据（如果我使用 3 种类型的图表类型）在这里显示 3 次？这会显示标题和其他所有内容（图例、工具提示）3 次：
loadChartDataMultiViz('4,5,8', 'area,spline,column', 'd3-chart1'); // Example for multiple series
如果我只选择一种类型的图表，代码显示良好，如下所示：
loadChartDataMultiViz('4,5,6', 'spline', 'd3-chart2'); // Example for multiple series
loadChartDataMultiViz('12,8', 'area', 'd3-chart3'); // Example for multiple series
这是我想出的方法，它对我有用：
function loadChartDataMultiViz(variables, chartTypes, chartId) {
$.ajax({
url: window.location.href + "/../../featured/getdatamulti",
data: { variable: variables }, // Pass comma-separated variables
success: function (response) {
if (Object.keys(response).length > 0) {
var series = [];
var categories = Object.keys(response); // Extract years for x-axis
var titles = [];
chartTypes = chartTypes.split(",").map((type) => type.trim());
variables = variables.split(",").map((variable) => variable.trim()); // Ensure variables are treated as an array
// Loop through variables and assign the correct chart type
for (let i = 0; i < variables.length; i++) {
const variable = variables[i];
const chartType = chartTypes[i] || "line"; // Default to 'line' if no chartType is provided
if (chartType === "pie") {
// For pie charts, format the series differently
series.push({
type: chartType,
name: "Data", // Generic name for the pie chart
colorByPoint: true,
data: categories.map((year) => {
return {
name: year, // Use year or any relevant label for each slice
y: response[year][Object.keys(response[year])[0]].value || 0, // Use value for each slice, default to 0 if missing
};
}),
});
// Collect titles for pie chart
titles.push(
response[categories[0]][Object.keys(response[categories[0]])[0]]
.title
);
} else {
// For other chart types (e.g., line, bar), create a series for each variable
// const data = categories.map(year => {
// return response[year][variable] ? response[year][variable].value : 0; // Default to 0 if not available
// });
const data = categories.map((year) => {
// If the response value is null, let it stay as null
return response[year][Object.keys(response[year])[i]].value !== null
? response[year][Object.keys(response[year])[i]].value
: null; // Leave as null if no value
});
series.push({
type: chartType,
name: response[categories[0]][
Object.keys(response[categories[0]])[i]
].title,
// name: variable, // Use the variable name for the series
data: data,
});
// Collect titles for each variable
// titles.push(response[categories[0]][Object.keys(response[categories[0]])[0]].title);
titles.push(
response[categories[0]][Object.keys(response[categories[0]])[i]]
.title
);
}
}
Highcharts.chart(
chartId,
{
chart: {
type: "container", // Use a container chart to hold multiple series
},
title: {
text: titles.join(",<br>"), // Combine all variable titles with a comma
align: "left",
},
xAxis: {
categories: categories,
title: {
text: "Year", // Example label for x-axis
},
},
yAxis: {
title: {
text:
response[categories[0]][
Object.keys(response[categories[0]])[0]
].unit || "",
},
},
series: series, // Pass the constructed series (formatted for pie or other charts)
annotations: [],
plotOptions: {
area: {
marker: {
enabled: false,
symbol: "circle",
radius: 2,
states: {
hover: {
enabled: true,
},
},
},
},
scatter: {
tooltip: {
pointFormatter: function () {
// Customize the tooltip for scatter points
return (
"Year: <b>" +
this.category +
"</b><br>" +
"Value: <b>" +
this.y +
"</b>"
);
},
},
lineWidth: 0, // Remove any connecting lines for the scatter plot
marker: {
radius: 5, // You can adjust the marker size here
},
},
},
},
function (chart) {
// Add annotations after the chart is created
const data = chart.series[0].data.map((point) => point.y);
addAnnotations(chart, data, "highest"); // Annotate highest value
addAnnotations(chart, data, "latest"); // Annotate latest value
}
);
}
},
});
}