我正在尝试从 CSV 中提取多家公司的金融股票数据,并将数据显示为 Highcharts/Highstocks 折线图中的单独系列。我已经设置了源,并且能够提取数据 + 转换为 JSON,但是我无法将数据传递给 Highcharts。我相信我没有使用最有效的方法来准备 Highcharts 使用的数据,我希望有人可以指导我做错了什么。请查看我的代码,让我了解您看到的任何低效率或明显错误。
PHP代码:
date_default_timezone_set('America/Los_Angeles');
$stocks = array('MSFT' => 'http://ichart.finance.yahoo.com/table.csv?s=MSFT', 'AAPL' => 'http://ichart.finance.yahoo.com/table.csv?s=AAPL', 'FB' => 'http://ichart.finance.yahoo.com/table.csv?s=FB');
$stocks_data = array();
foreach ($stocks as $key=>$stock) {
$fh = fopen($stock, 'r');
$header = fgetcsv($fh);
$varname = $key . '_data';
$$varname = array();
while ($line = fgetcsv($fh)) {
${$varname}[count($$varname)] = array_combine($header, $line);
}
fclose($fh);
}
foreach($MSFT_data as $val){
$MSFT[] = strtotime($val['Date']) * 1000 . ', ' . (float)$val['Close']; //sets the date as a javascript timestamp
}
$MSFT = json_encode($MSFT);
foreach($AAPL_data as $val){
$AAPL[] = strtotime($val['Date']) * 1000 . ', ' . (float)$val['Close']; //sets the date as a javascript timestamp
}
$AAPL = json_encode($AAPL);
foreach($FB_data as $val){
$FB[] = strtotime($val['Date']) * 1000 . ', ' . (float)$val['Close']; //sets the date as a javascript timestamp
}
$FB = json_encode($FB);
JS代码:
$(function () {
var seriesOptions = [],
yAxisOptions = [],
colors = Highcharts.getOptions().colors;
seriesOptions[0] = {
name: 'MSFT',
data: <? php echo $MSFT; ?>
};
seriesOptions[1] = {
name: 'AAPL',
data: <? php echo $AAPL; ?>
};
seriesOptions[2] = {
name: 'FB',
data: <? php echo $FB; ?>
};
function createChart() {
chart = new Highcharts.StockChart({
chart: {
renderTo: 'container'
},
rangeSelector: {
selected: 4
},
yAxis: {
labels: {
formatter: function () {
return (this.value > 0 ? '+' : '') + this.value + '%';
}
},
plotLines: [{
value: 0,
width: 2,
color: 'silver'
}]
},
plotOptions: {
series: {
compare: 'percent'
}
},
tooltip: {
pointFormat: '<span style="color:{series.color}">{series.name}</span>: <b>{point.y}</b> ({point.change}%)<br/>',
valueDecimals: 2
},
series: seriesOptions
});
}
});
如果您有任何问题或需要更多信息,请在评论中告诉我。
谢谢
顺便说一句:我拥有 Highcharts 工作所需的所有资产;当我用 Highcharts 网站上的示例代码替换我的 JS + PHP 时,它运行良好。所以问题显然出在我的 JS + PHP 代码上。