带有react-native-chart-kit的条形图中的实心条

Question

我正在使用https://www.npmjs.com/package/react-native-chart-kit并尝试制作一个图表以匹配以下设计规范：

我可以获得大多数选项来处理这个问题末尾附加的代码，但是我似乎无法弄清楚如何删除每个单独栏的不透明度，所以它最终看起来像这样：

我一直在仔细研究源代码并尝试使用道具和样式，但无济于事......任何帮助将不胜感激！

const { width: screenWidth } = Dimensions.get('window');

export type DataSet = {
  data: Array<Number>;
};

export type BarChartData = {
  labels: Array<String>;
  datasets: Array<DataSet>;
};

export interface SalesChartProps {
  data: BarChartData;
}

const chartConfig = {
  backgroundGradientFrom: '#Ffffff',
  backgroundGradientTo: '#ffffff',
  barPercentage: 1.3,
  decimalPlaces: 0, // optional, defaults to 2dp
  color: (opacity = 1) => `rgba(1, 122, 205, 1)`,
  labelColor: (opacity = 1) => `rgba(0, 0, 0, 1)`,

  style: {
    borderRadius: 16,
    fontFamily: 'Bogle-Regular',
  },
  propsForBackgroundLines: {
    strokeWidth: 1,
    stroke: '#efefef',
    strokeDasharray: '0',
  },
  propsForLabels: {
    fontFamily: 'Bogle-Regular',
  },
};

const SalesBarChart: FunctionComponent<SalesChartProps> = (
  props: SalesChartProps,
) => (
  <>
    <Text style={styles.chartTitle}> Sales </Text>
    <BarChart
      style={styles.graphStyle}
      showBarTops={false}
      showValuesOnTopOfBars={true}
      withInnerLines={true}
      segments={3}
      data={props.data}
      width={screenWidth - 15}
      height={175}
      yAxisLabel=""
      chartConfig={chartConfig}
      verticalLabelRotation={0}
    />
  </>
);

const styles = StyleSheet.create<{
  graphStyle: ViewStyle;
  chartTitle: TextStyle;
}>({
  graphStyle: {
    flex: 1,
    paddingRight: 25,
  },
  chartTitle: {
    paddingLeft: 20,
    paddingBottom: 20,
    paddingTop: 10,
    fontFamily: 'Bogle-Regular',
    fontSize: 16,
  },
})

//storybook file:
const data: BarChartData = {
  labels: ['9/19', '9/20', '9/21', '9/22', '9/23', '9/24', '9/25'],
  datasets: [
    {
      data: [5, 0, 2, 4, 6, 3, 0],
    },
  ],
};

const props = {
  data,
};

storiesOf('SalesChart', module)
  .addDecorator(withKnobs)
  .add('BarChart', () => <SalesChart {...props} />);

Answer 1

我发现了这个可怕的解决方案，如果您在图表配置中使用高度并将其设置为非常高的数字，则条形图看起来很坚固，例如：

const chartConfig = {
  backgroundGradientFrom: "#fff",
  backgroundGradientTo: "#fff",
  barPercentage: 0.7,
  height:5000,
  fillShadowGradient: `rgba(1, 122, 205, 1)`,
  fillShadowGradientOpacity: 1,
  decimalPlaces: 0, // optional, defaults to 2dp
  color: (opacity = 1) => `rgba(1, 122, 205, 1)`,
  labelColor: (opacity = 1) => `rgba(0, 0, 0, 1)`,

  style: {
    borderRadius: 16,
    fontFamily: "Bogle-Regular",
  },
  propsForBackgroundLines: {
    strokeWidth: 1,
    stroke: "#e3e3e3",
    strokeDasharray: "0",
  },
  propsForLabels: {
    fontFamily: "Bogle-Regular",
  },
};