尝试使用地图集群将具有相同坐标的标记分组

Question

我正在使用Map Cluster的leaflet.js插件来对相似且相同的坐标进行分组。我已经在脚本上手动设置了多个坐标(lat, lang)。运行后，具有相同坐标的标记似乎不会聚在一起，而只会彼此重叠。

var map = L.map('mapid', {

            fullscreenControl: {
                pseudoFullscreen: false // if true, fullscreen to page width and height
            },
            
        }).setView([-40.99497,174.50808], 10);

        map.createPane('labels');
        map.getPane('labels').style.zIndex = 650;
        map.getPane('labels').style.pointerEvents = 'none';

        var positron = L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
                noWrap: true,
                maxZoom : 15
        }).addTo(map);

        var positronLabels = L.tileLayer('http://{s}.basemaps.cartocdn.com/light_only_labels/{z}/{x}/{y}.png', {
                pane: 'labels',
                noWrap: true,
                maxZoom : 3
        }).addTo(map);

		var markers = L.markerClusterGroup({ 
            spiderfyOnMaxZoom: false, 
            showCoverageOnHover: false,
            zoomToBoundsOnClick: false 
        });

        var southWest = L.latLng(-89.98155760646617, -180),
            northEast = L.latLng(89.99346179538875, 180),
            bounds = L.latLngBounds(southWest, northEast);

            map.setMaxBounds(bounds);
            map.on('drag', function() {
                map.panInsideBounds(bounds, { animate: false });
            });

		var markers = L.markerClusterGroup({ 
            spiderfyOnMaxZoom: false, 
            showCoverageOnHover: false,
            zoomToBoundsOnClick: false 
        });

        var plot = [
            ["7C6B07",-40.99497,174.50808],
            ["7C6B38",-41.30269,173.63696],
            ["7C6CA1",-41.49413,173.5421],
            ["7C6CA2",-40.98585,174.50659],
            ["C81D9D",-40.93163,173.81726],
            ["C82009",-41.5183,174.78081],
            ["C82081",-41.42079,173.5783],
            ["C820AB",-42.08414,173.96632],
            ["C820AB",-42.08414,173.96632]
        ];


        for ( var i = 0; i < plot.length; i++ ) {
            marker = new L.marker([plot[i][1], plot[i][2]]).bindPopup(plot[i][0], {autoClose:false}).addTo(map).openPopup();
        }

        markers.on('clusterclick', function (a) {
            a.layer.spiderfy();
        });

/* required styles */

.leaflet-pane,
.leaflet-tile,
.leaflet-marker-icon,
.leaflet-marker-shadow,
.leaflet-tile-container,
.leaflet-pane > svg,
.leaflet-pane > canvas,
.leaflet-zoom-box,
.leaflet-image-layer,
.leaflet-layer {
	position: absolute;
	left: 0;
	top: 0;
	}
.leaflet-container {
	overflow: hidden;
	}
.leaflet-tile,
.leaflet-marker-icon,
.leaflet-marker-shadow {
	-webkit-user-select: none;
	   -moz-user-select: none;
	        user-select: none;
	  -webkit-user-drag: none;
	}
/* Safari renders non-retina tile on retina better with this, but Chrome is worse */
.leaflet-safari .leaflet-tile {
	image-rendering: -webkit-optimize-contrast;
	}
/* hack that prevents hw layers "stretching" when loading new tiles */
.leaflet-safari .leaflet-tile-container {
	width: 1600px;
	height: 1600px;
	-webkit-transform-origin: 0 0;
	}
.leaflet-marker-icon,
.leaflet-marker-shadow {
	display: block;
	}
/* .leaflet-container svg: reset svg max-width decleration shipped in Joomla! (joomla.org) 3.x */
/* .leaflet-container img: map is broken in FF if you have max-width: 100% on tiles */
.leaflet-container .leaflet-overlay-pane svg,
.leaflet-container .leaflet-marker-pane img,
.leaflet-container .leaflet-shadow-pane img,
.leaflet-container .leaflet-tile-pane img,
.leaflet-container img.leaflet-image-layer,
.leaflet-container .leaflet-tile {
	max-width: none !important;
	max-height: none !important;
	}

.leaflet-container.leaflet-touch-zoom {
	-ms-touch-action: pan-x pan-y;
	touch-action: pan-x pan-y;
	}
.leaflet-container.leaflet-touch-drag {
	-ms-touch-action: pinch-zoom;
	/* Fallback for FF which doesn't support pinch-zoom */
	touch-action: none;
	touch-action: pinch-zoom;
}
.leaflet-container.leaflet-touch-drag.leaflet-touch-zoom {
	-ms-touch-action: none;
	touch-action: none;
}
.leaflet-container {
	-webkit-tap-highlight-color: transparent;
}
.leaflet-container a {
	-webkit-tap-highlight-color: rgba(51, 181, 229, 0.4);
}
.leaflet-tile {
	filter: inherit;
	visibility: hidden;
	}
.leaflet-tile-loaded {
	visibility: inherit;
	}
.leaflet-zoom-box {
	width: 0;
	height: 0;
	-moz-box-sizing: border-box;
	     box-sizing: border-box;
	z-index: 800;
	}
/* workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=888319 */
.leaflet-overlay-pane svg {
	-moz-user-select: none;
	}

.leaflet-pane         { z-index: 400; }

.leaflet-tile-pane    { z-index: 200; }
.leaflet-overlay-pane { z-index: 400; }
.leaflet-shadow-pane  { z-index: 500; }
.leaflet-marker-pane  { z-index: 600; }
.leaflet-tooltip-pane   { z-index: 650; }
.leaflet-popup-pane   { z-index: 700; }

.leaflet-map-pane canvas { z-index: 100; }
.leaflet-map-pane svg    { z-index: 200; }

.leaflet-vml-shape {
	width: 1px;
	height: 1px;
	}
.lvml {
	behavior: url(#default#VML);
	display: inline-block;
	position: absolute;
	}


/* control positioning */

.leaflet-control {
	position: relative;
	z-index: 800;
	pointer-events: visiblePainted; /* IE 9-10 doesn't have auto */
	pointer-events: auto;
	}
.leaflet-top,
.leaflet-bottom {
	position: absolute;
	z-index: 1000;
	pointer-events: none;
	}
.leaflet-top {
	top: 0;
	}
.leaflet-right {
	right: 0;
	}
.leaflet-bottom {
	bottom: 0;
	}
.leaflet-left {
	left: 0;
	}
.leaflet-control {
	float: left;
	clear: both;
	}
.leaflet-right .leaflet-control {
	float: right;
	}
.leaflet-top .leaflet-control {
	margin-top: 10px;
	}
.leaflet-bottom .leaflet-control {
	margin-bottom: 10px;
	}
.leaflet-left .leaflet-control {
	margin-left: 10px;
	}
.leaflet-right .leaflet-control {
	margin-right: 10px;
	}


/* zoom and fade animations */

.leaflet-fade-anim .leaflet-tile {
	will-change: opacity;
	}
.leaflet-fade-anim .leaflet-popup {
	opacity: 0;
	-webkit-transition: opacity 0.2s linear;
	   -moz-transition: opacity 0.2s linear;
	        transition: opacity 0.2s linear;
	}
.leaflet-fade-anim .leaflet-map-pane .leaflet-popup {
	opacity: 1;
	}
.leaflet-zoom-animated {
	-webkit-transform-origin: 0 0;
	    -ms-transform-origin: 0 0;
	        transform-origin: 0 0;
	}
.leaflet-zoom-anim .leaflet-zoom-animated {
	will-change: transform;
	}
.leaflet-zoom-anim .leaflet-zoom-animated {
	-webkit-transition: -webkit-transform 0.25s cubic-bezier(0,0,0.25,1);
	   -moz-transition:    -moz-transform 0.25s cubic-bezier(0,0,0.25,1);
	        transition:         transform 0.25s cubic-bezier(0,0,0.25,1);
	}
.leaflet-zoom-anim .leaflet-tile,
.leaflet-pan-anim .leaflet-tile {
	-webkit-transition: none;
	   -moz-transition: none;
	        transition: none;
	}

.leaflet-zoom-anim .leaflet-zoom-hide {
	visibility: hidden;
	}


/* cursors */

.leaflet-interactive {
	cursor: pointer;
	}
.leaflet-grab {
	cursor: -webkit-grab;
	cursor:    -moz-grab;
	cursor:         grab;
	}
.leaflet-crosshair,
.leaflet-crosshair .leaflet-interactive {
	cursor: crosshair;
	}
.leaflet-popup-pane,
.leaflet-control {
	cursor: auto;
	}
.leaflet-dragging .leaflet-grab,
.leaflet-dragging .leaflet-grab .leaflet-interactive,
.leaflet-dragging .leaflet-marker-draggable {
	cursor: move;
	cursor: -webkit-grabbing;
	cursor:    -moz-grabbing;
	cursor:         grabbing;
	}

/* marker & overlays interactivity */
.leaflet-marker-icon,
.leaflet-marker-shadow,
.leaflet-image-layer,
.leaflet-pane > svg path,
.leaflet-tile-container {
	pointer-events: none;
	}

.leaflet-marker-icon.leaflet-interactive,
.leaflet-image-layer.leaflet-interactive,
.leaflet-pane > svg path.leaflet-interactive {
	pointer-events: visiblePainted; /* IE 9-10 doesn't have auto */
	pointer-events: auto;
	}

/* visual tweaks */

.leaflet-container {
	background: #ddd;
	outline: 0;
	}
.leaflet-container a {
	color: #0078A8;
	}
.leaflet-container a.leaflet-active {
	outline: 2px solid orange;
	}
.leaflet-zoom-box {
	border: 2px dotted #38f;
	background: rgba(255,255,255,0.5);
	}


/* general typography */
.leaflet-container {
	font: 12px/1.5 "Helvetica Neue", Arial, Helvetica, sans-serif;
	}


/* general toolbar styles */

.leaflet-bar {
	box-shadow: 0 1px 5px rgba(0,0,0,0.65);
	border-radius: 4px;
	}
.leaflet-bar a,
.leaflet-bar a:hover {
	background-color: #fff;
	border-bottom: 1px solid #ccc;
	width: 26px;
	height: 26px;
	line-height: 26px;
	display: block;
	text-align: center;
	text-decoration: none;
	color: black;
	}
.leaflet-bar a,
.leaflet-control-layers-toggle {
	background-position: 50% 50%;
	background-repeat: no-repeat;
	display: block;
	}
.leaflet-bar a:hover {
	background-color: #f4f4f4;
	}
.leaflet-bar a:first-child {
	border-top-left-radius: 4px;
	border-top-right-radius: 4px;
	}
.leaflet-bar a:last-child {
	border-bottom-left-radius: 4px;
	border-bottom-right-radius: 4px;
	border-bottom: none;
	}
.leaflet-bar a.leaflet-disabled {
	cursor: default;
	background-color: #f4f4f4;
	color: #bbb;
	}

.leaflet-touch .leaflet-bar a {
	width: 30px;
	height: 30px;
	line-height: 30px;
	}
.leaflet-touch .leaflet-bar a:first-child {
	border-top-left-radius: 2px;
	border-top-right-radius: 2px;
	}
.leaflet-touch .leaflet-bar a:last-child {
	border-bottom-left-radius: 2px;
	border-bottom-right-radius: 2px;
	}

/* zoom control */

.leaflet-control-zoom-in,
.leaflet-control-zoom-out {
	font: bold 18px 'Lucida Console', Monaco, monospace;
	text-indent: 1px;
	}

.leaflet-touch .leaflet-control-zoom-in, .leaflet-touch .leaflet-control-zoom-out  {
	font-size: 22px;
	}


/* layers control */

.leaflet-control-layers {
	box-shadow: 0 1px 5px rgba(0,0,0,0.4);
	background: #fff;
	border-radius: 5px;
	}
.leaflet-control-layers-toggle {
	background-image: url(images/layers.png);
	width: 36px;
	height: 36px;
	}
.leaflet-retina .leaflet-control-layers-toggle {
	background-image: url(images/layers-2x.png);
	background-size: 26px 26px;
	}
.leaflet-touch .leaflet-control-layers-toggle {
	width: 44px;
	height: 44px;
	}
.leaflet-control-layers .leaflet-control-layers-list,
.leaflet-control-layers-expanded .leaflet-control-layers-toggle {
	display: none;
	}
.leaflet-control-layers-expanded .leaflet-control-layers-list {
	display: block;
	position: relative;
	}
.leaflet-control-layers-expanded {
	padding: 6px 10px 6px 6px;
	color: #333;
	background: #fff;
	}
.leaflet-control-layers-scrollbar {
	overflow-y: scroll;
	overflow-x: hidden;
	padding-right: 5px;
	}
.leaflet-control-layers-selector {
	margin-top: 2px;
	position: relative;
	top: 1px;
	}
.leaflet-control-layers label {
	display: block;
	}
.leaflet-control-layers-separator {
	height: 0;
	border-top: 1px solid #ddd;
	margin: 5px -10px 5px -6px;
	}

/* Default icon URLs */
.leaflet-default-icon-path {
	background-image: url(images/marker-icon.png);
	}


/* attribution and scale controls */

.leaflet-container .leaflet-control-attribution {
	background: #fff;
	background: rgba(255, 255, 255, 0.7);
	margin: 0;
	}
.leaflet-control-attribution,
.leaflet-control-scale-line {
	padding: 0 5px;
	color: #333;
	}
.leaflet-control-attribution a {
	text-decoration: none;
	}
.leaflet-control-attribution a:hover {
	text-decoration: underline;
	}
.leaflet-container .leaflet-control-attribution,
.leaflet-container .leaflet-control-scale {
	font-size: 11px;
	}
.leaflet-left .leaflet-control-scale {
	margin-left: 5px;
	}
.leaflet-bottom .leaflet-control-scale {
	margin-bottom: 5px;
	}
.leaflet-control-scale-line {
	border: 2px solid #777;
	border-top: none;
	line-height: 1.1;
	padding: 2px 5px 1px;
	font-size: 11px;
	white-space: nowrap;
	overflow: hidden;
	-moz-box-sizing: border-box;
	     box-sizing: border-box;

	background: #fff;
	background: rgba(255, 255, 255, 0.5);
	}
.leaflet-control-scale-line:not(:first-child) {
	border-top: 2px solid #777;
	border-bottom: none;
	margin-top: -2px;
	}
.leaflet-control-scale-line:not(:first-child):not(:last-child) {
	border-bottom: 2px solid #777;
	}

.leaflet-touch .leaflet-control-attribution,
.leaflet-touch .leaflet-control-layers,
.leaflet-touch .leaflet-bar {
	box-shadow: none;
	}
.leaflet-touch .leaflet-control-layers,
.leaflet-touch .leaflet-bar {
	border: 2px solid rgba(0,0,0,0.2);
	background-clip: padding-box;
	}


/* popup */

.leaflet-popup {
	position: absolute;
	text-align: center;
	margin-bottom: 20px;
	}
.leaflet-popup-content-wrapper {
	padding: 1px;
	text-align: left;
	border-radius: 12px;
	}
.leaflet-popup-content {
	margin: 13px 19px;
	line-height: 1.4;
	}
.leaflet-popup-content p {
	margin: 18px 0;
	}
.leaflet-popup-tip-container {
	width: 40px;
	height: 20px;
	position: absolute;
	left: 50%;
	margin-left: -20px;
	overflow: hidden;
	pointer-events: none;
	}
.leaflet-popup-tip {
	width: 17px;
	height: 17px;
	padding: 1px;

	margin: -10px auto 0;

	-webkit-transform: rotate(45deg);
	   -moz-transform: rotate(45deg);
	    -ms-transform: rotate(45deg);
	        transform: rotate(45deg);
	}
.leaflet-popup-content-wrapper,
.leaflet-popup-tip {
	background: white;
	color: #333;
	box-shadow: 0 3px 14px rgba(0,0,0,0.4);
	}
.leaflet-container a.leaflet-popup-close-button {
	position: absolute;
	top: 0;
	right: 0;
	padding: 4px 4px 0 0;
	border: none;
	text-align: center;
	width: 18px;
	height: 14px;
	font: 16px/14px Tahoma, Verdana, sans-serif;
	color: #c3c3c3;
	text-decoration: none;
	font-weight: bold;
	background: transparent;
	}
.leaflet-container a.leaflet-popup-close-button:hover {
	color: #999;
	}
.leaflet-popup-scrolled {
	overflow: auto;
	border-bottom: 1px solid #ddd;
	border-top: 1px solid #ddd;
	}

.leaflet-oldie .leaflet-popup-content-wrapper {
	zoom: 1;
	}
.leaflet-oldie .leaflet-popup-tip {
	width: 24px;
	margin: 0 auto;

	-ms-filter: "progid:DXImageTransform.Microsoft.Matrix(M11=0.70710678, M12=0.70710678, M21=-0.70710678, M22=0.70710678)";
	filter: progid:DXImageTransform.Microsoft.Matrix(M11=0.70710678, M12=0.70710678, M21=-0.70710678, M22=0.70710678);
	}
.leaflet-oldie .leaflet-popup-tip-container {
	margin-top: -1px;
	}

.leaflet-oldie .leaflet-control-zoom,
.leaflet-oldie .leaflet-control-layers,
.leaflet-oldie .leaflet-popup-content-wrapper,
.leaflet-oldie .leaflet-popup-tip {
	border: 1px solid #999;
	}


/* div icon */

.leaflet-div-icon {
	background: #fff;
	border: 1px solid #666;
	}


/* Tooltip */
/* Base styles for the element that has a tooltip */
.leaflet-tooltip {
	position: absolute;
	padding: 6px;
	background-color: #fff;
	border: 1px solid #fff;
	border-radius: 3px;
	color: #222;
	white-space: nowrap;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	pointer-events: none;
	box-shadow: 0 1px 3px rgba(0,0,0,0.4);
	}
.leaflet-tooltip.leaflet-clickable {
	cursor: pointer;
	pointer-events: auto;
	}
.leaflet-tooltip-top:before,
.leaflet-tooltip-bottom:before,
.leaflet-tooltip-left:before,
.leaflet-tooltip-right:before {
	position: absolute;
	pointer-events: none;
	border: 6px solid transparent;
	background: transparent;
	content: "";
	}

/* Directions */

.leaflet-tooltip-bottom {
	margin-top: 6px;
}
.leaflet-tooltip-top {
	margin-top: -6px;
}
.leaflet-tooltip-bottom:before,
.leaflet-tooltip-top:before {
	left: 50%;
	margin-left: -6px;
	}
.leaflet-tooltip-top:before {
	bottom: 0;
	margin-bottom: -12px;
	border-top-color: #fff;
	}
.leaflet-tooltip-bottom:before {
	top: 0;
	margin-top: -12px;
	margin-left: -6px;
	border-bottom-color: #fff;
	}
.leaflet-tooltip-left {
	margin-left: -6px;
}
.leaflet-tooltip-right {
	margin-left: 6px;
}
.leaflet-tooltip-left:before,
.leaflet-tooltip-right:before {
	top: 50%;
	margin-top: -6px;
	}
.leaflet-tooltip-left:before {
	right: 0;
	margin-right: -12px;
	border-left-color: #fff;
	}
.leaflet-tooltip-right:before {
	left: 0;
	margin-left: -12px;
	border-right-color: #fff;
	}
  
  
  
  /* http://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}

<link href="https://unpkg.com/leaflet@1.3.4/dist/leaflet.css" rel="stylesheet"/>
<link href="https://unpkg.com/leaflet.markercluster@1.4.1/dist/MarkerCluster.Default.css" rel="stylesheet"/>


<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://unpkg.com/leaflet.gridlayer.googlemutant@latest/Leaflet.GoogleMutant.js"></script>
<script src="https://unpkg.com/leaflet@1.3.4/dist/leaflet.js"></script>
<script src="https://unpkg.com/leaflet.markercluster@1.4.1/dist/leaflet.markercluster-src.js"></script>


        <div class="map-container" id="mapid"></div>

        <ul class="plot">
            <li class="markers" data-lattitude="-40.99497" data-longitude="174.50808">Text 1</li>
            <li class="markers" data-lattitude="-41.30269" data-longitude="173.63696">Text 2</li>
            <li class="markers" data-lattitude="-41.49413" data-longitude="173.5421">Text 3</li>
            <li class="markers" data-lattitude="-40.98585" data-longitude="174.50659">Text 4</li>
            <li class="markers" data-lattitude="-40.93163" data-longitude="173.81726">Text 5</li>
        </ul>

Answer 1

将您的标记添加到标记群集组之一而不是地图中。

不要忘记将组本身添加到地图中。

Answer 2

嗨，我对您的代码进行了一些更改，并且可以正常运行

dfin <- 
ID    CYCLE     NUM   DIAM
1     BASELINE  1      8
1     BASLEINE  2      4
1     CYCLE 1   1      6
1     CYCLE 1   2      2
1     CYCLE 2   1      6
1     CYCLE 2   2      NE
1     CYCLE 3   1      6
1     CYCLE 3   2      NA

dfout <- 
ID    CYCLE     SUM
1     0         12
1     1         8
1     2         NA
1     3         6