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Fix data in financial sample (#6244)

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This commit is contained in:
Ben McCann
2019-05-15 05:23:09 -07:00
committed by Simon Brunel
parent 196274defc
commit e5c68e2c82
1 changed files with 32 additions and 4 deletions
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36
samples/scales/time/financial.html
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@@ -17,6 +17,7 @@
<body>
<div style="width:1000px">
<p>This example demonstrates a time series scale by drawing a financial line chart using just the core library. For more specific functionality for financial charts, please see <a href="https://github.com/chartjs/chartjs-chart-financial">chartjs-chart-financial</a></p>
<canvas id="chart1"></canvas>
</div>
<br>
@@ -37,6 +38,27 @@
<button id="update">update</button>
<script>
function generateData() {
var unit = document.getElementById('unit').value;
function unitLessThanDay() {
return unit === 'second' || unit === 'minute' || unit === 'hour';
}
function beforeNineThirty(date) {
return date.hour() < 9 || (date.hour() === 9 && date.minute() < 30);
}
// Returns true if outside 9:30am-4pm on a weekday
function outsideMarketHours(date) {
if (date.isoWeekday() > 5) {
return true;
}
if (unitLessThanDay() && (beforeNineThirty(date) || date.hour() > 16)) {
return true;
}
return false;
}
function randomNumber(min, max) {
return Math.random() * (max - min) + min;
}
@@ -53,11 +75,17 @@
var date = moment('Jan 01 1990', 'MMM DD YYYY');
var now = moment();
var data = [];
var unit = document.getElementById('unit').value;
for (; data.length < 60 && date.isBefore(now); date = date.clone().add(1, unit)) {
if (date.isoWeekday() <= 5) {
data.push(randomBar(date, data.length > 0 ? data[data.length - 1].y : 30));
var lessThanDay = unitLessThanDay();
for (; data.length < 60 && date.isBefore(now); date = date.clone().add(1, unit).startOf(unit)) {
if (outsideMarketHours(date)) {
if (!lessThanDay || !beforeNineThirty(date)) {
date = date.clone().add(date.isoWeekday() >= 5 ? 8 - date.isoWeekday() : 1, 'day');
}
if (lessThanDay) {
date = date.hour(9).minute(30).second(0);
}
}
data.push(randomBar(date, data.length > 0 ? data[data.length - 1].y : 30));
}
return data;