[英]D3.js change time format and export data into csv
Have an original CSV(cities_9_2.csv) file like this: 拥有原始的CSV(cities_9_2.csv)文件,如下所示:
date
"Wed, 01 Jul 2015 15:16:45 GMT"
"Wed, 01 Jul 2015 15:22:13 GMT"
"Wed, 01 Jul 2015 15:28:52 GMT"
"Wed, 01 Jul 2015 19:56:27 GMT"
Want to change the time format to 5/16/2016 12:00:00AM
, have this d3 code below, the export file code is according to https://github.com/agershun/alasql/wiki/How-to-export-JavaScript-array-info-to-csv-on-client-side . 想要将时间格式更改为
5/16/2016 12:00:00AM
,在下面有此d3代码,导出文件代码根据https://github.com/agershun/alasql/wiki/How-to-export -将JavaScript数组信息发送到客户端上的csv 。
But currently the downloaded csv file is empty, does anyone know why? 但是目前下载的csv文件为空,有人知道为什么吗?
var array_date = [];
var parser = d3.time.format("%Y/%m/%d %I%P");
d3.csv("cities_9_2.csv", function(data){
data.forEach(function(d) {
var theDate = parser.parse(d.date);
array_date.push(theDate);
})
});
window.exportData = function exportData() {
alasql("SELECT * INTO CSV('baba.csv') FROM ?",[array_date]);
}
For this date format in the CSV you don't need a parser, simply do the following. 对于CSV中的此日期格式,您不需要解析器,只需执行以下操作即可。
var array_date = [];
d3.csv("my.csv", function(data){
console.log(data)
data.forEach(function(d) {
var theDate = new Date(d.date);//the will get the correct date
array_date.push(theDate);
});
console.log(array_date)
});
If you want to convert it into a dateformat then do : 如果要将其转换为日期格式,请执行以下操作:
var array_date = [];
var parser = d3.time.format("%Y/%m/%d %I%P");
d3.csv("my.csv", function(data){
console.log(data)
data.forEach(function(d) {
var theDate = parser(new Date(d.date));
array_date.push(theDate);
})
console.log(array_date)
});
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