### Dynamic Chart Updates using setOption (Vue.js)

Source: https://context7.com/ijry/lycharts/llms.txt

Demonstrates how to dynamically update chart data and configuration in real-time using the `setOption` method provided by the `ly-charts-line` component. This example includes methods for updating data and resizing the chart.

```vue
<template>
  <view>
    <ly-charts-line ref="lineChart" :option="chartOption" :height="400" />
    <button @click="updateData">Update Data</button>
    <button @click="resizeChart">Resize Chart</button>
  </view>
</template>

<script>
export default {
  data() {
    return {
      chartOption: {
        xAxis: { data: ['A', 'B', 'C', 'D', 'E'] },
        yAxis: {},
        series: [
          {
            type: 'line',
            data: [10, 20, 15, 30, 25]
          }
        ]
      }
    };
  },
  methods: {
    updateData() {
      const newData = [15, 25, 20, 35, 30];
      this.$refs.lineChart.setOption({
        series: [{ data: newData }]
      });
    },
    resizeChart() {
      this.$refs.lineChart.resize();
    }
  }
};
</script>
```

--------------------------------

### Advanced Chart Styling and Configuration (Vue.js)

Source: https://context7.com/ijry/lycharts/llms.txt

Showcases advanced styling options for line charts, including background color, title styles, legend configuration, axis line and label styling, smooth lines, data point symbols, area styling, and custom series colors. This example demonstrates how to create visually rich and customized charts.

```vue
<template>
  <ly-charts-line :option="advancedOption" :width="'100%'" :height="500" />
</template>

<script>
export default {
  data() {
    return {
      advancedOption: {
        backgroundColor: '#f5f5f5',
        title: {
          text: 'Advanced Chart Styling',
          textStyle: {
            color: '#333',
            fontSize: 20,
            fontWeight: 'bold'
          }
        },
        legend: {
          data: ['Sales', 'Target'],
          top: 40,
          textStyle: { color: '#666' }
        },
        xAxis: {
          data: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
          axisLine: { lineStyle: { color: '#ccc' } },
          axisLabel: {
            color: '#666',
            fontSize: 12,
            rotate: 0
          }
        },
        yAxis: {
          axisLine: { lineStyle: { color: '#ccc' } },
          splitLine: { lineStyle: { color: '#e0e0e0' } },
          axisLabel: { color: '#666' }
        },
        series: [
          {
            name: 'Sales',
            type: 'line',
            data: [
              { value: 120, itemStyle: { color: '#5470c6' } },
              { value: 200, itemStyle: { color: '#5470c6' } },
              { value: 150, itemStyle: { color: '#91cc75' } },
              { value: 180, itemStyle: { color: '#fac858' } },
              { value: 220, itemStyle: { color: '#ee6666' } },
              { value: 190, itemStyle: { color: '#73c0de' } }
            ],
            smooth: true,
            showSymbol: true,
            areaStyle: true,
            lineStyle: { width: 3 },
            label: {
              show: true,
              position: 'top',
              color: '#333',
              fontSize: 11
            }
          },
          {
            name: 'Target',
            type: 'line',
            data: [150, 150, 150, 150, 150, 150],
            lineStyle: {
              width: 2,
              type: 'dashed'
            },
            showSymbol: false,
            color: '#ff6b6b'
          }
        ],
        xAxisPadding: 20
      }
    };
  }
};
</script>
```

--------------------------------

### Create Donut Chart with Vue.js

Source: https://context7.com/ijry/lycharts/llms.txt

Renders a donut chart using the `ly-charts-pie` component. This chart type features a hollow center, allowing for additional information display or visual hierarchy. It requires a Vue.js environment and the Lycharts library.

```vue
<template>
  <ly-charts-pie :option="donutOption" :height="400" />
</template>

<script>
export default {
  data() {
    return {
      donutOption: {
        title: { text: 'Traffic Sources', left: 'center' },
        legend: {
          orient: 'vertical',
          left: 'left',
          top: 'middle',
          data: ['Direct', 'Search', 'Social', 'Email']
        },
        series: [
          {
            type: 'pie',
            radius: ['40%', '70%'],
            data: [
              { value: 1048, name: 'Direct' },
              { value: 735, name: 'Search' },
              { value: 580, name: 'Social' },
              { value: 484, name: 'Email' }
            ],
            itemStyle: {
              borderRadius: 0,
              borderColor: '#fff',
              borderWidth: 2
            }
          }
        ]
      }
    };
  }
};
</script>
```

--------------------------------

### Create Pie Chart Component with Vue.js

Source: https://context7.com/ijry/lycharts/llms.txt

Renders a pie chart using the `ly-charts-pie` component. This component supports donut charts and custom styling for displaying circular data distributions. It requires a Vue.js environment and the Lycharts library.

```vue
<template>
  <ly-charts-pie
    :option="pieOption"
    :width="'100%'"
    :height="400"
    @click="onPieClick"
  />
</template>

<script>
export default {
  data() {
    return {
      pieOption: {
        title: {
          text: 'Market Share Distribution',
          left: 'center',
          textStyle: { fontSize: 18, color: '#333' }
        },
        legend: {
          orient: 'horizontal',
          bottom: 10,
          data: ['Product A', 'Product B', 'Product C', 'Product D', 'Product E']
        },
        series: [
          {
            type: 'pie',
            radius: '65%',
            data: [
              { value: 335, name: 'Product A', color: '#5470c6' },
              { value: 310, name: 'Product B', color: '#91cc75' },
              { value: 234, name: 'Product C', color: '#fac858' },
              { value: 135, name: 'Product D', color: '#ee6666' },
              { value: 148, name: 'Product E', color: '#73c0de' }
            ],
            itemStyle: {
              borderWidth: 2,
              borderColor: '#ffffff'
            }
          }
        ]
      }
    };
  },
  methods: {
    onPieClick(params) {
      console.log('Pie slice:', params.name, params.value);
    }
  }
};
</script>
```

--------------------------------

### Chart Helper Utility Functions (JavaScript)

Source: https://context7.com/ijry/lycharts/llms.txt

Provides reusable JavaScript functions for chart data processing, including calculating data ranges, processing X-axis data, determining optimal Y-axis tick marks, and accessing default color palettes. These functions are essential for preparing data before rendering charts.

```javascript
import chartHelper from '@/uni_modules/ly-charts/libs/util/chartHelper.js';

// Calculate data range with padding
const series = [
  { type: 'line', data: [10, 20, 15, 30, 25] },
  { type: 'line', data: [15, 25, 20, 35, 30] }
];
const { minY, maxY } = chartHelper.calculateDataRange(series);
console.log('Y-axis range:', minY, maxY);

// Process X-axis data from configuration
const xAxis = { data: ['Jan', 'Feb', 'Mar', 'Apr', 'May'] };
const xAxisData = chartHelper.processXAxisData(xAxis, series);
console.log('X-axis labels:', xAxisData);

// Calculate optimal Y-axis tick marks
const tickInfo = chartHelper.calculateYAxisTicks(0, 100, 5);
console.log('Tick configuration:', tickInfo);
// Output: { min: 0, max: 100, step: 20, tickCount: 5 }

// Get default color from palette
const color1 = chartHelper.getColor(0); // '#5470c6'
const color2 = chartHelper.getColor(1); // '#91cc75'
console.log('Chart colors:', color1, color2);

// Access default color palette
console.log('Color palette:', chartHelper.defaultColors);
// ['#5470c6', '#91cc75', '#fac858', '#ee6666', '#73c0de', ...]
```

--------------------------------

### Configure Viewport Meta Tag with CSS Env Support (JavaScript)

Source: https://github.com/ijry/lycharts/blob/master/index.html

Checks for CSS 'supports' function and specific CSS environment variable support ('top: env(a)' or 'top: constant(a)'). If supported, it writes a viewport meta tag with 'viewport-fit=cover' enabled; otherwise, it omits this parameter. This is crucial for responsive design on modern devices.

```javascript
var coverSupport = 'CSS' in window && typeof CSS.supports === 'function' && (CSS.supports('top: env(a)') || CSS.supports('top: constant(a)'))
document.write( '<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0' + (coverSupport ? ', viewport-fit=cover' : '') + '" />')
```

--------------------------------

### Create Stacked Bar Chart with Vue.js

Source: https://context7.com/ijry/lycharts/llms.txt

Renders a stacked bar chart using the `ly-charts-bar` component. This chart type combines multiple data series into unified columns for comparison. It requires a Vue.js environment and the Lycharts library.

```vue
<template>
  <ly-charts-bar :option="stackedOption" :height="400" />
</template>

<script>
export default {
  data() {
    return {
      stackedOption: {
        title: { text: 'Product Category Sales' },
        legend: { data: ['Electronics', 'Clothing', 'Food'] },
        xAxis: { data: ['Store A', 'Store B', 'Store C', 'Store D'] },
        yAxis: {},
        series: [
          {
            name: 'Electronics',
            type: 'bar',
            stack: 'total',
            data: [120, 132, 101, 134],
            color: '#5470c6',
            itemStyle: { borderWidth: 2, borderColor: '#fff' }
          },
          {
            name: 'Clothing',
            type: 'bar',
            stack: 'total',
            data: [220, 182, 191, 234],
            color: '#91cc75'
          },
          {
            name: 'Food',
            type: 'bar',
            stack: 'total',
            data: [150, 232, 201, 154],
            color: '#fac858'
          }
        ]
      }
    };
  }
};
</script>
```

--------------------------------

### Create Mountain Chart with Vue.js

Source: https://context7.com/ijry/lycharts/llms.txt

Displays a mountain chart (triangle bars) using the `ly-charts-bar` component. This chart type uses triangular peaks for visual emphasis. It requires a Vue.js environment and the Lycharts library.

```vue
<template>
  <ly-charts-bar :option="mountainOption" :height="400" />
</template>

<script>
export default {
  data() {
    return {
      mountainOption: {
        title: { text: 'Peak Performance Metrics' },
        xAxis: { data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'] },
        yAxis: {},
        series: [
          {
            type: 'bar',
            symbol: 'mountain',
            data: [
              { value: 820, itemStyle: { color: '#5470c6' } },
              { value: 932, itemStyle: { color: '#91cc75' } },
              { value: 901, itemStyle: { color: '#fac858' } },
              { value: 934, itemStyle: { color: '#ee6666' } },
              { value: 1290, itemStyle: { color: '#73c0de' } },
              { value: 1330, itemStyle: { color: '#3ba272' } },
              { value: 1320, itemStyle: { color: '#fc8452' } }
            ],
            barWidth: 25,
            itemStyle: {
              borderColor: 'rgba(255,255,255,0.8)',
              borderWidth: 2
            }
          }
        ]
      }
    };
  }
};
</script>
```

--------------------------------

### Bar Chart Component using ly-charts-bar in Vue

Source: https://context7.com/ijry/lycharts/llms.txt

Renders bar charts with support for various styles like stacked and mountain. It uses the ly-charts-bar component, accepts an 'option' prop for configuration, and emits click events. Requires the ly-charts library.

```vue
<template>
  <ly-charts-bar
    :option="barOption"
    :width="'100%'"
    :height="400"
    @click="onBarClick"
  />
</template>

<script>
export default {
  data() {
    return {
      barOption: {
        title: { text: 'Quarterly Revenue Comparison' },
        legend: {
          data: ['2023', '2024'],
          bottom: 10
        },
        xAxis: {
          data: ['Q1', 'Q2', 'Q3', 'Q4'],
          axisLabel: { fontSize: 12 }
        },
        yAxis: {},
        series: [
          {
            name: '2023',
            type: 'bar',
            data: [320, 350, 380, 420],
            barWidth: 20,
            color: '#5470c6',
            itemStyle: {
              borderRadius: 4,
              borderColor: '#fff',
              borderWidth: 1
            }
          },
          {
            name: '2024',
            type: 'bar',
            data: [380, 420, 450, 500],
            barWidth: 20,
            color: '#91cc75'
          }
        ],
        xAxisPadding: 10
      }
    };
  },
  methods: {
    onBarClick(params) {
      console.log('Bar clicked:', params);
    }
  }
};
</script>
```

--------------------------------

### Line Chart Component using ly-charts-line in Vue

Source: https://context7.com/ijry/lycharts/llms.txt

Renders time-series and categorical data using the ly-charts-line component. It accepts an 'option' prop for chart configuration and handles click events. Dependencies include the ly-charts library.

```vue
<template>
  <ly-charts-line
    :option="chartOption"
    :width="'100%'"
    :height="400"
    @click="handleChartClick"
  />
</template>

<script>
export default {
  data() {
    return {
      chartOption: {
        title: {
          text: 'Monthly Sales Trend',
          textStyle: { color: '#333', fontSize: 18 }
        },
        legend: {
          data: ['Product A', 'Product B'],
          top: 10
        },
        xAxis: {
          data: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
          axisLabel: { color: '#666', fontSize: 12 }
        },
        yAxis: {
          axisLabel: { color: '#666' }
        },
        series: [
          {
            name: 'Product A',
            type: 'line',
            data: [120, 200, 150, 180, 220, 190],
            smooth: true,
            showSymbol: true,
            areaStyle: true,
            color: '#5470c6',
            lineStyle: { width: 2 },
            label: { show: true, position: 'top', color: '#666' }
          },
          {
            name: 'Product B',
            type: 'line',
            data: [80, 120, 100, 140, 160, 150],
            smooth: true,
            color: '#91cc75'
          }
        ],
        xAxisPadding: 0
      }
    };
  },
  methods: {
    handleChartClick(params) {
      console.log('Clicked:', params.seriesName, params.name, params.value);
      uni.showToast({
        title: `${params.name}: ${params.value}`,
        icon: 'none'
      });
    }
  }
};
</script>
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.