Create pie-label.md

example/pie-label.md

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+## Pie Charts with Label
+
+**Label.tsx**
+
+```tsx
+import React from 'react';
+import {G, Text as SvgText} from 'react-native-svg';
+
+interface LabelsProps {
+  slices: {
+    pieCentroid: string;
+    labelCentroid: string;
+    data: any;
+  }[];
+}
+
+const Labels = (props: Partial<LabelsProps>) => {
+  const {slices} = props as LabelsProps;
+  const length = slices.length;
+
+  //Dynamic Value
+  const FONT_SIZE = length > 7 ? 10 : 11;
+  const TEXT_Y = 2;
+  const TEXT_X = 2;
+
+  return (
+    <>
+      {slices.map((slice, index) => {
+        const {labelCentroid, data} = slice;
+        return (
+          <G key={index}>
+            <G x={labelCentroid[0]} y={labelCentroid[1]}>
+              <SvgText
+                key={index}
+                x={TEXT_X}
+                y={TEXT_Y}
+                fill={data.svg.fill}
+                textAnchor={'middle'}
+                rotation={90}
+                alignmentBaseline={'middle'}
+                fontSize={FONT_SIZE}
+                fontWeight="800">
+                {data.label}
+              </SvgText>
+            </G>
+          </G>
+        );
+      })}
+    </>
+  );
+};
+
+export default Labels;
+
+```
+
+**PieChart.tsx**
+
+```tsx
+import React from 'react';
+import Labels from './Label';
+import {PieChart} from 'react-native-chart-kit-chz';
+import {View} from 'react-native';
+
+const DataChart = () => {
+  const chartData = [
+    {
+      key: 1,
+      value: 100,
+      svg: {fill: '#000'},
+      arc: {cornerRadius: 0},
+      label: 'Cplex',
+    },
+    {
+      key: 2,
+      value: 178,
+      svg: {fill: '#902'},
+      arc: {cornerRadius: 0},
+      label: 'Jsum',
+    },
+  ];
+  return (
+    <View>
+      <PieChart
+        style={{width: 320, height: 320}}
+        items={chartData}
+        innerRadius={0}
+        outerRadius={65}
+        padAngle={0}
+        labelRadius={90}>
+        <Labels />
+      </PieChart>
+    </View>
+  );
+};
+
+export default DataChart;
+
+```