可视化处理

toHist

Map toHist({required double start, required double end, required int counts })

转直方图
案例请参考uniform

toBar

Map toBar()

转柱状图（或者是条形图）

test

import '../flutter_matrix.dart';

main() {
  var mt = Matrix.fromList([
    [1, 2, 3, 4, 2, 1],
    [3, 4, 6, 0, 0, 3],
    [1, 5, 8, 4, 2, 3],
    [3, 4, 8, 9, 9, 5],
  ]);
  print(mt.toBar());
}

output

{1.0: 3, 2.0: 3, 3.0: 5, 4.0: 4, 6.0: 1, 0.0: 2, 5.0: 2, 8.0: 2, 9.0: 2}

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