總覽
某些 Google 圖表 (例如區域、折線和組合圖) 會以線條連結資料點。您可以使用本頁提供的技巧自訂線條的顏色、粗細和虛線。
變更顏色
您可以透過兩種細微的方式，變更 Google 圖表中連結資料點的線條顏色：使用 colors 選項變更圖表調色盤，或使用 series 選項指定特定序列的顏色。
在下圖中，我們會明確設定每個序列的顏色。
var options = {
legend: 'none',
series: {
0: { color: '#e2431e' },
1: { color: '#e7711b' },
2: { color: '#f1ca3a' },
3: { color: '#6f9654' },
4: { color: '#1c91c0' },
5: { color: '#43459d' },
}
};
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable
([['X', '1', '2', '3', '4', '5', '6'],
[1, 2, 3, 4, 5, 6, 7],
[2, 3, 4, 5, 6, 7, 8],
[3, 4, 5, 6, 7, 8, 9],
[4, 5, 6, 7, 8, 9, 10],
[5, 6, 7, 8, 9, 10, 11],
[6, 7, 8, 9, 10, 11, 12]
]);
var options = {
legend: 'none',
series: {
0: { color: '#e2431e' },
1: { color: '#e7711b' },
2: { color: '#f1ca3a' },
3: { color: '#6f9654' },
4: { color: '#1c91c0' },
5: { color: '#43459d' },
}
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
在上方，顏色是以十六進位值 (例如'#e2431e' 或 '#f00' 表示飽和紅色)，但也可以用英文名稱指定。以下範例會進行說明，並示範如何使用 colors 選項修正圖表調色盤 (而不是設定個別序列的顏色) 來控制顏色。唯一的差別在於如果您修正了調色盤，且調色盤中有多個序列多於色彩，系統會重複使用該顏色：如果調色盤包含紅色和藍色，其中一半資料會呈現紅色，其他半藍色。
var options = {
legend: 'none',
colors: ['black', 'blue', 'red', 'green', 'yellow', 'gray']
};
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable
([['X', '1', '2', '3', '4', '5', '6'],
[1, 2, 3, 4, 5, 6, 7],
[2, 3, 4, 5, 6, 7, 8],
[3, 4, 5, 6, 7, 8, 9],
[4, 5, 6, 7, 8, 9, 10],
[5, 6, 7, 8, 9, 10, 11],
[6, 7, 8, 9, 10, 11, 12]
]);
var options = {
legend: 'none',
colors: ['black', 'blue', 'red', 'green', 'yellow', 'gray']
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
變更粗細
您可以使用 lineWidth 選項控制線條的粗細：
var options = {
legend: 'none',
hAxis: { maxValue: 7 },
vAxis: { maxValue: 13 },
lineWidth: 10,
colors: ['#e2431e', '#d3362d', '#e7711b',
'#e49307', '#e49307', '#b9c246']
};
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable
([['X', '1', '2', '3', '4', '5', '6'],
[1, 2, 3, 4, 5, 6, 7],
[2, 3, 4, 5, 6, 7, 8],
[3, 4, 5, 6, 7, 8, 9],
[4, 5, 6, 7, 8, 9, 10],
[5, 6, 7, 8, 9, 10, 11],
[6, 7, 8, 9, 10, 11, 12]
]);
var options = {
legend: 'none',
hAxis: { maxValue: 7 },
vAxis: { maxValue: 13 },
lineWidth: 10,
colors: ['#e2431e', '#d3362d', '#e7711b',
'#e49307', '#e49307', '#b9c246']
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
如要控制序列的線條寬度，請使用 series 選項：
var options = {
legend: 'none',
hAxis: { maxValue: 7 },
vAxis: { maxValue: 13 },
series: {
0: { lineWidth: 1 },
1: { lineWidth: 2 },
2: { lineWidth: 4 },
3: { lineWidth: 8 },
4: { lineWidth: 16 },
5: { lineWidth: 24 }
},
colors: ['#e2431e', '#d3362d', '#e7711b',
'#e49307', '#e49307', '#b9c246']
};
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable
([['X', '1', '2', '3', '4', '5', '6'],
[1, 2, 3, 4, 5, 6, 7],
[2, 3, 4, 5, 6, 7, 8],
[3, 4, 5, 6, 7, 8, 9],
[4, 5, 6, 7, 8, 9, 10],
[5, 6, 7, 8, 9, 10, 11],
[6, 7, 8, 9, 10, 11, 12]
]);
var options = {
legend: 'none',
hAxis: { maxValue: 7 },
vAxis: { maxValue: 13 },
series: {
0: { lineWidth: 1 },
1: { lineWidth: 2 },
2: { lineWidth: 4 },
3: { lineWidth: 8 },
4: { lineWidth: 16 },
5: { lineWidth: 24 }
},
colors: ['#e2431e', '#d3362d', '#e7711b',
'#e49307', '#e49307', '#b9c246']
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
虛線
lineDashStyle 選項提供多種虛線樣式，選用數字陣列。第一個數字代表虛線的長度，第二個數字代表破折號的間隔。如果有第三個數字，那就是下一個破折號的長度，如果有第四個數字 (如果有的話)，則為下一個間隔的長度。
繪製圖表時，這些長度會重複，因此 [4,
4] 表示連續 4 個長度的破折號和 4 個長度的間隔。[5, 1, 3] 代表長度 5 個長度的破折號、1 個長度的間隔、3 個長度的破折號、5 個長度的間隔等等。以下提供一些例子：
var options = {
hAxis: { maxValue: 10 },
vAxis: { maxValue: 18 },
chartArea: { width: 380 },
lineWidth: 4,
series: {
0: { lineDashStyle: [1, 1] },
1: { lineDashStyle: [2, 2] },
2: { lineDashStyle: [4, 4] },
3: { lineDashStyle: [5, 1, 3] },
4: { lineDashStyle: [4, 1] },
5: { lineDashStyle: [10, 2] },
6: { lineDashStyle: [14, 2, 7, 2] },
7: { lineDashStyle: [14, 2, 2, 7] },
8: { lineDashStyle: [2, 2, 20, 2, 20, 2] }
},
colors: ['#e2431e', '#f1ca3a', '#6f9654', '#1c91c0',
'#4374e0', '#5c3292', '#572a1a', '#999999', '#1a1a1a'],
};
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable
([['X', 'lineDashStyle: [1, 1]', 'lineDashStyle: [2, 2]',
'lineDashStyle: [4, 4]', 'lineDashStyle: [5, 1, 3]',
'lineDashStyle: [4, 1]',
'lineDashStyle: [10, 2]', 'lineDashStyle: [14, 2, 7, 2]',
'lineDashStyle: [14, 2, 2, 7]',
'lineDashStyle: [2, 2, 20, 2, 20, 2]'],
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
[2, 3, 4, 5, 6, 7, 8, 9, 10, 11],
[3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
[4, 5, 6, 7, 8, 9, 10, 11, 12, 13],
[5, 6, 7, 8, 9, 10, 11, 12, 13, 14],
[6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
[7, 8, 9, 10, 11, 12, 13, 14, 15, 16],
[8, 9, 10, 11, 12, 13, 14, 15, 16, 17],
[9, 10, 11, 12, 13, 14, 15, 16, 17, 18]
]);
var options = {
hAxis: { maxValue: 10 },
vAxis: { maxValue: 18 },
chartArea: { width: 380 },
lineWidth: 4,
series: {
0: { lineDashStyle: [1, 1] },
1: { lineDashStyle: [2, 2] },
2: { lineDashStyle: [4, 4] },
3: { lineDashStyle: [5, 1, 3] },
4: { lineDashStyle: [4, 1] },
5: { lineDashStyle: [10, 2] },
6: { lineDashStyle: [14, 2, 7, 2] },
7: { lineDashStyle: [14, 2, 2, 7] },
8: { lineDashStyle: [2, 2, 20, 2, 20, 2] }
},
colors: ['#e2431e', '#f1ca3a', '#6f9654', '#1c91c0',
'#4374e0', '#5c3292', '#572a1a', '#999999', '#1a1a1a'],
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>