a post with echarts

This is an example post with some echarts code.

```echarts
{
  "title": {
    "text": "ECharts Getting Started Example"
  },
  "responsive": true,
  "tooltip": {},
  "legend": {
    "top": "30px",
    "data": ["sales"]
  },
  "xAxis": {
    "data": ["Shirts", "Cardigans", "Chiffons", "Pants", "Heels", "Socks"]
  },
  "yAxis": {},
  "series": [
    {
      "name": "sales",
      "type": "bar",
      "data": [5, 20, 36, 10, 10, 20]
    }
  ]
}
```

Which generates:

{
  "title": {
    "text": "Stacked Area Chart"
  },
  "responsive": true,
  "tooltip": {
    "position": "top"
  },
  "grid": {
    "height": "80%",
    "top": "10%",
    "width": "80%"
  },
  "xAxis": {
    "type": "category",
    "data": [
      "กระบี่", "กรุงเทพมหานคร", "กาญจนบุรี", "กาฬสินธุ์", "กำแพงเพชร", "ขอนแก่น", "จันทบุรี", "ฉะเชิงเทรา", "ชลบุรี", "ชัยนาท", "ชัยภูมิ", "ชุมพร", "ตรัง", "ตราด", "ตาก", "นครนายก", "นครปฐม", "นครพนม", "นครราชสีมา", "นครศรีธรรมราช", "นครสวรรค์", "นนทบุรี", "นราธิวาส", "น่าน", "บึงกาฬ", "บุรีรัมย์", "ปทุมธานี", "ประจวบคีรีขันธ์", "ปราจีนบุรี", "ปัตตานี", "พระนครศรีอยุธยา", "พะเยา", "พังงา", "พัทลุง", "พิจิตร", "พิษณุโลก", "ภูเก็ต", "มหาสารคาม", "มุกดาหาร", "ยะลา", "ยโสธร", "ระนอง", "ระยอง", "ราชบุรี", "ร้อยเอ็ด", "ลพบุรี", "ลำปาง", "ลำพูน", "ศรีสะเกษ", "สกลนคร", "สงขลา", "สตูล", "สมุทรปราการ", "สมุทรสงคราม", "สมุทรสาคร", "สระบุรี", "สระแก้ว", "สิงห์บุรี", "สุพรรณบุรี", "สุราษฎร์ธานี", "สุรินทร์", "สุโขทัย", "หนองคาย", "หนองบัวลำภู", "อำนาจเจริญ", "อุดรธานี", "อุตรดิตถ์", "อุทัยธานี", "อุบลราชธานี", "อ่างทอง", "เชียงราย", "เชียงใหม่", "เพชรบุรี", "เพชรบูรณ์", "เลย", "แพร่", "แม่ฮ่องสอน"
    ],
    "axisLabel":{
      "rotate": 45,
      "interval": 0
    },
    "splitArea": {
      "show": true
    }
  },
  "yAxis": {
    "type": "category",
    "data": [
      "กลุ่มกฎหมายและกระบวนการยุติธรรม", "กลุ่มการบริหารราชการแผ่นดินและความมั่นคง", "กลุ่มการศึกษา", "กลุ่มการสาธารณสุข", "กลุ่มประชาสังคม องค์กรสาธารณประโย์", "กลุ่มผู้ประกอบกิจการ SMEs", "กลุ่มผู้ประกอบกิจการอื่น", "กลุ่มผู้ประกอบธุรกิจหรืออาชีพด้านการท่องเที่ยว", "กลุ่มผู้ประกอบวิชาชีพ ผู้ประกอบอาชีพอิสระ", "กลุ่มผู้ประกอบอาชีพด้านวิทยาศาสตร์ เทคโนโลยี", "กลุ่มผู้ประกอบอาชีพด้านสิ่งแวดล้อม อสังหาริมทรัพย์ พลังงาน", "กลุ่มผู้ประกอบอุตสาหกรรม", "กลุ่มผู้สูงอายุ คนพิการหรือทุพพลภาพ กลุ่มชาติพันธุ์ กลุ่มอัตลักษณ์อื่น", "กลุ่มลูกจ้าง ผู้ใช้แรงงาน", "กลุ่มศิลปะ วัฒนธรรม ดนตรี การแสดงและบันเทิง นักกีฬา", "กลุ่มสตรี", "กลุ่มสื่อสารมวลชน นักเขียน", "กลุ่มอาชีพทำนา ทำไร่", "กลุ่มอาชีพทำสวน เลี้ยงสัตว์ ประมง", "กลุ่มอื่น ๆ"
    ],
    "splitArea": {
      "show": true
    }
  },
  "visualMap": {
    "min": 0,
    "max": 200,
    "calculable": true,
    "orient": "horizontal",
    "left": "center"
  },
  "series": [
    {
      "name": "จำนวนผู้สมัคร สว.",
      "type": "heatmap",
      "data":  [[0, 0, 1], [1, 0, 4], [2, 0, 2], [3, 0, 12], [4, 0, 1], [5, 0, 7], [6, 0, 4], [7, 0, 1], [8, 0, 2], [9, 0, 5], [10, 0, 0], [11, 0, 0], [12, 0, 4], [13, 0, 3], [14, 0, 3], [15, 0, 1], [16, 0, 0], [17, 0, 3], [18, 0, 0], [19, 0, 0], [20, 0, 4], [21, 0, 0], [22, 0, 7], [23, 0, 3], [24, 0, 2], [25, 0, 0], [26, 0, 0], [27, 0, 1], [28, 0, 6], [29, 0, 4], [30, 0, 3], [31, 0, 2], [32, 0, 1], [33, 0, 1], [34, 0, 1], [35, 0, 0], [36, 0, 4], [37, 0, 3], [38, 0, 2], [39, 0, 1], [40, 0, 0], [41, 0, 2], [42, 0, 0], [43, 0, 1], [44, 0, 2], [45, 0, 0], [46, 0, 2], [47, 0, 6], [48, 0, 5], [0, 1, 1], [1, 1, 1], [2, 1, 3], [3, 1, 1], [4, 1, 1], [5, 1, 6], [6, 1, 4], [7, 1, 0], [8, 1, 5], [9, 1, 2], [10, 1, 1], [11, 1, 1], [12, 1, 1], [13, 1, 0], [14, 1, 3], [15, 1, 1], [16, 1, 1], [17, 1, 1], [18, 1, 3], [19, 1, 2], [20, 1, 7], [21, 1, 2], [22, 1, 7], [23, 1, 4], [24, 1, 4], [25, 1, 0], [26, 1, 4], [27, 1, 1], [28, 1, 1], [29, 1, 2], [30, 1, 2], [31, 1, 2], [32, 1, 2], [33, 1, 2], [34, 1, 3], [35, 1, 3], [36, 1, 3], [37, 1, 1], [38, 1, 4], [39, 1, 1], [40, 1, 4], [41, 1, 3], [42, 1, 0], [43, 1, 0], [44, 1, 4], [45, 1, 0], [46, 1, 0], [47, 1, 1], [48, 1, 3], [0, 2, 3], [1, 2, 8], [2, 2, 1], [3, 2, 8], [4, 2, 3], [5, 2, 1], [6, 2, 0], [7, 2, 1], [8, 2, 3], [9, 2, 4], [10, 2, 3], [11, 2, 0], [12, 2, 3], [13, 2, 2], [14, 2, 7], [15, 2, 3], [16, 2, 1], [17, 2, 2], [18, 2, 1], [19, 2, 1], [20, 2, 2], [21, 2, 1], [22, 2, 3], [23, 2, 1], [24, 2, 6], [25, 2, 4], [26, 2, 5], [27, 2, 1], [28, 2, 3], [29, 2, 5], [30, 2, 0], [31, 2, 2], [32, 2, 2], [33, 2, 0], [34, 2, 4], [35, 2, 0], [36, 2, 0], [37, 2, 5], [38, 2, 4], [39, 2, 3], [40, 2, 2], [41, 2, 6], [42, 2, 0], [43, 2, 3], [44, 2, 5], [45, 2, 4], [46, 2, 4], [47, 2, 3], [48, 2, 4], [0, 3, 6], [1, 3, 1], [2, 3, 1], [3, 3, 5], [4, 3, 1], [5, 3, 1], [6, 3, 3], [7, 3, 5], [8, 3, 4], [9, 3, 2], [10, 3, 1], [11, 3, 2], [12, 3, 13], [13, 3, 3], [14, 3, 4], [15, 3, 1], [16, 3, 2], [17, 3, 2], [18, 3, 1], [19, 3, 1], [20, 3, 3], [21, 3, 1], [22, 3, 1], [23, 3, 3], [24, 3, 1], [25, 3, 1], [26, 3, 4], [27, 3, 0], [28, 3, 3], [29, 3, 0], [30, 3, 1], [31, 3, 1], [32, 3, 0], [33, 3, 1], [34, 3, 1], [35, 3, 1], [36, 3, 1], [37, 3, 3], [38, 3, 6], [39, 3, 2], [40, 3, 1], [41, 3, 0], [42, 3, 0], [43, 3, 1], [44, 3, 1], [45, 3, 1], [46, 3, 1], [47, 3, 3], [48, 3, 0], [0, 4, 0], [1, 4, 0], [2, 4, 0], [3, 4, 2], [4, 4, 0], [5, 4, 0], [6, 4, 0], [7, 4, 0], [8, 4, 0], [9, 4, 1], [10, 4, 0], [11, 4, 0], [12, 4, 0], [13, 4, 0], [14, 4, 1], [15, 4, 0], [16, 4, 1], [17, 4, 0], [18, 4, 0], [19, 4, 0], [20, 4, 0], [21, 4, 1], [22, 4, 0], [23, 4, 0], [24, 4, 0], [25, 4, 0], [26, 4, 0], [27, 4, 0], [28, 4, 0], [29, 4, 0], [30, 4, 1], [31, 4, 0], [32, 4, 0], [33, 4, 0], [34, 4, 0], [35, 4, 0], [36, 4, 2], [37, 4, 2], [38, 4, 2], [39, 4, 1], [40, 4, 1], [41, 4, 0], [42, 4, 1], [43, 4, 0], [44, 4, 11], [45, 4, 3], [46, 4, 1], [47, 4, 0], [48, 4, 0], [0, 5, 0], [1, 5, 0], [2, 5, 0], [3, 5, 0], [4, 5, 2], [5, 5, 1], [6, 5, 4], [7, 5, 1], [8, 5, 0], [9, 5, 2], [10, 5, 0], [11, 5, 0], [12, 5, 0], [13, 5, 0], [14, 5, 2], [15, 5, 2], [16, 5, 0], [17, 5, 0], [18, 5, 0], [19, 5, 0], [20, 5, 0], [21, 5, 1], [22, 5, 1], [23, 5, 1], [24, 5, 2], [25, 5, 1], [26, 5, 1], [27, 5, 2], [28, 5, 0], [29, 5, 1], [30, 5, 0], [31, 5, 1], [32, 5, 0], [33, 5, 0], [34, 5, 1], [35, 5, 0], [36, 5, 3], [37, 5, 0], [38, 5, 0], [39, 5, 1], [40, 5, 0], [41, 5, 1], [42, 5, 0], [43, 5, 1], [44, 5, 0], [45, 5, 1], [46, 5, 1], [47, 5, 0], [48, 5, 0], [0, 6, 6], [1, 6, 5], [2, 6, 4], [3, 6, 11], [4, 6, 0], [5, 6, 5], [6, 6, 5], [7, 6, 2], [8, 6, 4], [9, 6, 0], [10, 6, 5], [11, 6, 5], [12, 6, 2], [13, 6, 1], [14, 6, 6], [15, 6, 6], [16, 6, 1], [17, 6, 1], [18, 6, 5], [19, 6, 0], [20, 6, 3], [21, 6, 2], [22, 6, 8], [23, 6, 4], [24, 6, 5], [25, 6, 3], [26, 6, 2], [27, 6, 6], [28, 6, 2], [29, 6, 4], [30, 6, 3], [31, 6, 10], [32, 6, 6], [33, 6, 7], [34, 6, 4], [35, 6, 3], [36, 6, 5], [37, 6, 7], [38, 6, 3], [39, 6, 7], [40, 6, 5], [41, 6, 6], [42, 6, 2], [43, 6, 2], [44, 6, 10], [45, 6, 3], [46, 6, 4], [47, 6, 3], [48, 6, 7], [0, 7, 0], [1, 7, 4], [2, 7, 4], [3, 7, 7], [4, 7, 1], [5, 7, 1], [6, 7, 4], [7, 7, 4], [8, 7, 2], [9, 7, 2], [10, 7, 4], [11, 7, 1], [12, 7, 2], [13, 7, 0], [14, 7, 6], [15, 7, 1], [16, 7, 1], [17, 7, 4], [18, 7, 1], [19, 7, 1], [20, 7, 3], [21, 7, 3], [22, 7, 3], [23, 7, 1], [24, 7, 4], [25, 7, 15], [26, 7, 2], [27, 7, 2], [28, 7, 2], [29, 7, 1], [30, 7, 2], [31, 7, 2], [32, 7, 0], [33, 7, 2], [34, 7, 1], [35, 7, 0], [36, 7, 2], [37, 7, 3], [38, 7, 1], [39, 7, 6], [40, 7, 3], [41, 7, 1], [42, 7, 0], [43, 7, 3], [44, 7, 3], [45, 7, 0], [46, 7, 1], [47, 7, 2], [48, 7, 6], [0, 8, 3], [1, 8, 6], [2, 8, 1], [3, 8, 2], [4, 8, 0], [5, 8, 3], [6, 8, 3], [7, 8, 1], [8, 8, 4], [9, 8, 4], [10, 8, 1], [11, 8, 1], [12, 8, 0], [13, 8, 1], [14, 8, 7], [15, 8, 2], [16, 8, 7], [17, 8, 4], [18, 8, 2], [19, 8, 3], [20, 8, 0], [21, 8, 2], [22, 8, 7], [23, 8, 5], [24, 8, 4], [25, 8, 4], [26, 8, 8], [27, 8, 2], [28, 8, 3], [29, 8, 1], [30, 8, 4], [31, 8, 5], [32, 8, 3], [33, 8, 9], [34, 8, 3], [35, 8, 4], [36, 8, 4], [37, 8, 4], [38, 8, 9], [39, 8, 3], [40, 8, 7], [41, 8, 5], [42, 8, 2], [43, 8, 0], [44, 8, 2], [45, 8, 2], [46, 8, 3], [47, 8, 2], [48, 8, 5], [0, 9, 3], [1, 9, 3], [2, 9, 0], [3, 9, 3], [4, 9, 1], [5, 9, 0], [6, 9, 1], [7, 9, 0], [8, 9, 0], [9, 9, 0], [10, 9, 0], [11, 9, 0], [12, 9, 0], [13, 9, 0], [14, 9, 2], [15, 9, 1], [16, 9, 0], [17, 9, 1], [18, 9, 1], [19, 9, 0], [20, 9, 1], [21, 9, 0], [22, 9, 7], [23, 9, 1], [24, 9, 5], [25, 9, 1], [26, 9, 4], [27, 9, 1], [28, 9, 3], [29, 9, 2], [30, 9, 0], [31, 9, 0], [32, 9, 1], [33, 9, 3], [34, 9, 0], [35, 9, 1], [36, 9, 0], [37, 9, 1], [38, 9, 2], [39, 9, 0], [40, 9, 1], [41, 9, 1], [42, 9, 0], [43, 9, 0], [44, 9, 0], [45, 9, 1], [46, 9, 1], [47, 9, 2], [48, 9, 1], [0, 10, 1], [1, 10, 5], [2, 10, 1], [3, 10, 2], [4, 10, 0], [5, 10, 3], [6, 10, 1], [7, 10, 0], [8, 10, 0], [9, 10, 0], [10, 10, 0], [11, 10, 1], [12, 10, 0], [13, 10, 0], [14, 10, 6], [15, 10, 0], [16, 10, 1], [17, 10, 2], [18, 10, 1], [19, 10, 0], [20, 10, 2], [21, 10, 1], [22, 10, 6], [23, 10, 4], [24, 10, 1], [25, 10, 0], [26, 10, 5], [27, 10, 1], [28, 10, 5], [29, 10, 2], [30, 10, 1], [31, 10, 1], [32, 10, 0], [33, 10, 1], [34, 10, 3], [35, 10, 1], [36, 10, 2], [37, 10, 5], [38, 10, 0], [39, 10, 1], [40, 10, 2], [41, 10, 4], [42, 10, 2], [43, 10, 1], [44, 10, 2], [45, 10, 0], [46, 10, 0], [47, 10, 0], [48, 10, 1], [0, 11, 1], [1, 11, 1], [2, 11, 0], [3, 11, 1], [4, 11, 1], [5, 11, 2], [6, 11, 0], [7, 11, 0], [8, 11, 1], [9, 11, 1], [10, 11, 0], [11, 11, 1], [12, 11, 1], [13, 11, 1], [14, 11, 1], [15, 11, 0], [16, 11, 0], [17, 11, 1], [18, 11, 0], [19, 11, 1], [20, 11, 0], [21, 11, 3], [22, 11, 1], [23, 11, 0], [24, 11, 1], [25, 11, 1], [26, 11, 3], [27, 11, 1], [28, 11, 1], [29, 11, 1], [30, 11, 1], [31, 11, 0], [32, 11, 0], [33, 11, 2], [34, 11, 0], [35, 11, 3], [36, 11, 0], [37, 11, 1], [38, 11, 3], [39, 11, 0], [40, 11, 0], [41, 11, 1], [42, 11, 0], [43, 11, 0], [44, 11, 1], [45, 11, 0], [46, 11, 0], [47, 11, 1], [48, 11, 1], [0, 12, 1], [1, 12, 2], [2, 12, 1], [3, 12, 4], [4, 12, 0], [5, 12, 4], [6, 12, 4], [7, 12, 3], [8, 12, 5], [9, 12, 3], [10, 12, 3], [11, 12, 0], [12, 12, 4], [13, 12, 5], [14, 12, 11], [15, 12, 3], [16, 12, 0], [17, 12, 2], [18, 12, 4], [19, 12, 1], [20, 12, 2], [21, 12, 5], [22, 12, 5], [23, 12, 3], [24, 12, 1], [25, 12, 4], [26, 12, 6], [27, 12, 3], [28, 12, 9], [29, 12, 4], [30, 12, 4], [31, 12, 5], [32, 12, 1], [33, 12, 4], [34, 12, 2], [35, 12, 1], [36, 12, 1], [37, 12, 7], [38, 12, 5], [39, 12, 10], [40, 12, 8], [41, 12, 7], [42, 12, 2], [43, 12, 5], [44, 12, 2], [45, 12, 0], [46, 12, 3], [47, 12, 6], [48, 12, 8], [0, 13, 7], [1, 13, 10], [2, 13, 0], [3, 13, 3], [4, 13, 2], [5, 13, 2], [6, 13, 2], [7, 13, 0], [8, 13, 4], [9, 13, 0], [10, 13, 5], [11, 13, 2], [12, 13, 5], [13, 13, 2], [14, 13, 8], [15, 13, 8], [16, 13, 1], [17, 13, 7], [18, 13, 4], [19, 13, 2], [20, 13, 5], [21, 13, 4], [22, 13, 11], [23, 13, 0], [24, 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      "label": {
        "show": true
      },
      "emphasis": {
        "itemStyle": {
          "shadowBlur": 10,
          "shadowColor": "rgba(0, 0, 0, 0.5)"
        }
      }
    }
  ]
}

Note that this library offer support for both light and dark themes. You can switch between them using the theme switcher in the top right corner of the page.