簡介
部分 Google 圖表 (例如面積圖、折線圖和組合圖) 都有連接資料點的線段。您可以使用這個頁面的技術,自訂線條的顏色、粗細和虛線。
變更色彩
您可以透過兩種方式,變更連接 Google 圖表資料點的線條顏色:使用 colors
選項來變更圖表調色盤,或使用 series
選項來指定特定係列的顏色。
在下圖中,我們明確設定了每個系列的顏色。
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>
在上方指定顏色,以十六進位值
(例如'#e2431e'
或 '#f00'
代表飽和紅色)。以下範例將說明此情況,並示範如何使用 colors
選項修正圖表調色盤,而不控制個別系列的顏色,以控制色彩。不同之處在於,如果您修正調色盤,且區塊數量超過調色盤的數量,系統會重複使用這些顏色:如果調色盤是由紅色和藍色組成,一半的系列為紅色,而另一個系列則是藍色。
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>
變更厚度
您可以使用 lineWidth
選項來控制線條粗細:
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>
如要控制系列的線條寬度,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
許多虛線樣式的樣式都可透過 lineDashStyle
選項使用,也就是使用數字陣列。第一個數字代表破折號的長度,第二個數字代表後方的間隔。如果第三個數字是下一個破折號的長度,第四個數字 (如果存在) 是下一個間隔的長度。
系統繪製圖表時,會重複這些長度,因此 [4,
4]
代表連續 4 個破折號和 4 個間距間隔。[5, 1, 3]
代表 5 長破折號、1 長間隔、3 長破折號和 5 長度間隔等等。以下列舉部分範例:
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>