GPT答：

7i24.cn

標轉換

        // 經緯度度分秒轉成10進位
        d.lat = parseFloat(d.lat.replace("N",""))
        d.lng = parseFloat(d.lng.replace("E",""))

        var lat = d.lat/100;
        var lng = d.lng/100;

        lat = parseFloat(lat.toString().split(".")[0] + "." + parseFloat("0." + lat.toString().split(".")[1])*60);
        lng = parseFloat(lng.toString().split(".")[0] + "." + parseFloat("0." + lng.toString().split(".")[1])*60);

        d.lat = lat;
        d.lng = lng;
        
        // lat, lon
		var parseLat = d3.round(d.lat, 3);
        var parseLon = d3.round(d.lng, 3);

        return "translate(" + projection([parseLon, parseLat]) +")";

    });

function transitions() {
 
	//會用到的數字
	var hour = 25;
	var hour_no_red = 0;
	
	//make sure to reset color back to normal
	d3.selectAll('image').style('opacity', 1);
	
	//設定每小時的縮放大小
	if (hour > 0 && hour <= 6 || hour > 24 ) {
		var scale_dots = 0.8;
	} else if (hour > 6 && hour <= 12) {
		var scale_dots = 1;
	} else if (hour > 12 && hour <= 18) {
		var scale_dots = 1.25;
	} else if (hour >18 && hour <= 24) {
		var scale_dots = 1.1;
	}
	
	d3.selectAll('image').transition().duration(800)
	.attr('transform', 'scale(' + scale_dots + ')');
	
	if (hour > 24) { //25小時
		var hour_no_red = hour - 24; //轉換0-24
	} else {
		var hour_no_red = hour;
	}
	
	//移除所有黃色
	d3.selectAll('circle').style('fill', '#ecb753');
	
	// highlight all red dots
	d3.selectAll('circle').style('fill', function(d) {
		return d.hour == hour_no_red ? '#d3001f' : '#ecb753';
	});
	
	//remove all image
	d3.selectAll('image').style('opacity', 0);
	
	//highlight all images
	d3.selectAll('image').style('opacity', function(d) {
	return d.hour == hour_no_red ? 1 : 0;
	});
}

//開始接收資料
d3.csv('data.csv', function(data) {
	//不用的資料設定為空
	data.forEach(function(d) {
		d.hour = +d.hour; // make it a number
	});

	//尋找時間最多的小時
	var max_hour = 0;
	var num_hour = 0;

	d3.entries(data).forEach(function(d) {
	if (+d.value.hour>max_hour) {
		max_hour = +d.value.hour;
	}
	num_hour = Math.max( max_hour );
	});
	
	//bug fix, 24點應該是0點
	num_hour_fixed = num_hour + 1;
	
	//setup the visuals
	transitions();

	$('.sr-only').html(hour); //update the hour for screen readers
	$('#hour').text(hour); //update hour
	$('#hour_range').val(hour); //update range

	//function for the slider
	$(function() {
		$( "#hour_range" ).slider({ 
			value: hour, 
			min: 1, 
			max: 25, 
			step: 1, 
			slide: function( event, ui ) {
				hour = ui.value;       
				transitions();
				$('.sr-only').html(hour);
				$('#hour').text(hour);
			}  
		});
	}); 
});