charts - setonloadcallback - multi chart google chart

¿Cómo puedo adjuntar la imagen o el icono en el borde del gráfico de líneas de Google?

Question

Quiero que el gráfico de líneas se vea a continuación

o solo es posible el cuadro de secuencia de imagen?

Me gusta esto

¿Hay alguna manera posible de lograr esto?

Answer 1

usa el method getChartLayoutInterface

var layout = chart.getChartLayoutInterface();

para encontrar la ubicación (x, y) del punto

var xPos = layout.getXLocation(data.getValue(row, xColumn));
var yPos = layout.getYLocation(data.getValue(row, yColumn));

luego agregue la imagen manualmente y ajuste en consecuencia

google.charts.load(''current'', {packages: [''corechart'', ''line'']});
google.charts.setOnLoadCallback(drawBackgroundColor);
function drawBackgroundColor() {
var data = new google.visualization.DataTable();
data.addColumn(''number'', ''X'');
data.addColumn(''number'', ''Y'');
data.addRows([
[0, 0], [1, 10], [2, 23], [3, 17], [4, 18], [5, 9],
[6, 11], [7, 27], [8, 33], [9, 40], [10, 32], [11, 35],
[12, 30], [13, 40], [14, 42], [15, 47], [16, 44], [17, 48],
[18, 52], [19, 54], [20, 42], [21, 55], [22, 56], [23, 57],
[24, 60], [25, 50], [26, 52], [27, 51], [28, 49], [29, 53],
[30, 55], [31, 60], [32, 61], [33, 59], [34, 62], [35, 65],
[36, 62], [37, 58], [38, 55], [39, 61], [40, 64], [41, 65],
[42, 63], [43, 66], [44, 67], [45, 69], [46, 69], [47, 70],
[48, 72], [49, 68], [50, 66], [51, 65], [52, 67], [53, 70],
[54, 71], [55, 72], [56, 73], [57, 75], [58, 70], [59, 68],
[60, 64], [61, 60], [62, 65], [63, 67], [64, 68], [65, 69],
[66, 70], [67, 72], [68, 75], [69, 80]
]);
var options = {
colors: [''#000000''],
legend: ''none'',
lineSize: 2
};
var container = document.getElementById(''chart_div'');
var chart = new google.visualization.LineChart(container);
google.visualization.events.addListener(chart, ''ready'', function () {
var layout = chart.getChartLayoutInterface();
for (var i = 0; i < data.getNumberOfRows(); i++) {
// add image above every fifth element
if ((i % 5) === 0) {
var xPos = layout.getXLocation(data.getValue(i, 0));
var yPos = layout.getYLocation(data.getValue(i, 1));
var whiteHat = container.appendChild(document.createElement(''img''));
whiteHat.src = ''http://findicons.com/files/icons/512/star_wars/16/clone_old.png'';
whiteHat.className = ''whiteHat'';
// 16x16 (image size in this example)
whiteHat.style.top = (yPos - 16) + ''px'';
whiteHat.style.left = (xPos) + ''px'';
}
}
});
chart.draw(data, options);
}

.whiteHat {
border: none;
position: absolute;
}

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>