var directionMap = {};
echarts.util.each(
['W', 'WSW', 'SW', 'SSW', 'S', 'SSE', 'SE', 'ESE', 'E', 'ENE', 'NE', 'NNE', 'N', 'NNW', 'NW', 'WNW'],
function (name, index) {
directionMap[name] = Math.PI / 8 * index;
}
);
var dims = {
time: 0,
windSpeed: 1,
R: 2,
waveHeight: 3,
weatherIcon: 2,
minTemp: 3,
maxTemp: 4
};
var arrowSize = 18;
var weatherIconSize = 45;
function renderArrow(param, api) {
var point = api.coord([
api.value(dims.time),
api.value(dims.windSpeed)
]);
return {
type: 'path',
shape: {
pathData: 'M31 16l-15-15v9h-26v12h26v9z',
x: -arrowSize / 2,
y: -arrowSize / 2,
width: arrowSize,
height: arrowSize
},
rotation: directionMap[api.value(dims.R)],
position: point,
style: api.style({
stroke: '#555',
lineWidth: 1
})
};
}
option = {
"title": {
"text": "天气 风向 风速 海浪 预报",
"subtext": "示例数据源于 www.seabreeze.com.au",
"left": "center"
},
tooltip: {
trigger: 'axis',
formatter: function (params) {
return [
echarts.format.formatTime('yyyy-MM-dd', params[0].value[dims.time])
+ ' ' + echarts.format.formatTime('hh:mm', params[0].value[dims.time]),
'风速：' + params[0].value[dims.windSpeed],
'风向：' + params[0].value[dims.R],
].join('<br>');
}
},
"visualMap": [{
"show": false,
"dimension": 0,
"seriesIndex": 1,
"pieces": [{
"lte": 10,
"color": "#259e72"
}, {
"gt": 10,
"color": "#51d9a7"
}]
}],
"grid": {
"top": 160,
"bottom": 125
},
"xAxis": {
"type": "time",
"maxInterval": 86400000,
"splitLine": {
"lineStyle": {
"color": "#ddd"
}
}
},
"yAxis": [{
"name": "风速（节）",
"nameLocation": "middle",
"nameGap": 35,
"axisLine": {
"lineStyle": {
"color": "#666"
}
},
"splitLine": {
"lineStyle": {
"color": "#ddd"
}
}
}],
"visualMap": {
"type": "piecewise",
"orient": "horizontal",
"left": "center",
"bottom": 10,
"pieces": [{
"gte": 17,
"color": "#18BF12",
"label": "大风（>=17节）"
}, {
"gte": 11,
"lt": 17,
"color": "#f4e9a3",
"label": "中风（11 ~ 17 节）"
}, {
"lt": 11,
"color": "#D33C3E",
"label": "微风（小于 11 节）"
}],
"seriesIndex": 0,
"dimension": 1
},
"dataZoom": [{
"type": "inside",
"xAxisIndex": 0,
"minSpan": 5
}, {
"type": "slider",
"xAxisIndex": 0,
"minSpan": 5,
"height": 20,
"bottom": 50,
"handleIcon": "M10.7,11.9H9.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4h1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z",
"handleSize": "120%"
}],
"series": [{
"type": "custom",
renderItem: renderArrow,
"encode": {
"x": 0,
"y": 1
},
"data": [
["2017-06-27T11:00:00.000Z", 9, "NNW", 2.64],
["2017-06-27T12:30:00.000Z", 10, "NNW", 2.57],
["2017-06-27T14:00:00.000Z", 12, "NNW", 2.49],
["2017-06-27T15:30:00.000Z", 12, "NNW", 2.44],
["2017-06-27T17:00:00.000Z", 11, "NNW", 2.38],
["2017-06-27T18:30:00.000Z", 10, "NNW", 2.34],
["2017-06-27T20:00:00.000Z", 10, "N", 2.3],
["2017-06-27T21:30:00.000Z", 11, "NNW", 2.26],
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["2017-06-28T00:30:00.000Z", 12, "N", 2.18],
["2017-06-28T02:00:00.000Z", 12, "N", 2.13],
["2017-06-28T03:30:00.000Z", 12, "N", 2.09],
["2017-06-28T05:00:00.000Z", 12, "NNE", 2.04],
["2017-06-28T06:30:00.000Z", 10, "N", 2.01],
["2017-06-28T08:00:00.000Z", 9, "N", 1.99],
["2017-06-28T09:30:00.000Z", 8, "NNW", 2],
["2017-06-28T11:00:00.000Z", 8, "NW", 2.01],
["2017-06-28T12:30:00.000Z", 8, "NW", 2.06],
["2017-06-28T14:00:00.000Z", 9, "WNW", 2.12],
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["2017-06-29T09:30:00.000Z", 30, "SW", 3.58],
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],
"z": 10
}, {
"type": "line",
"data": [
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],
"z": 1
}]
}