Matlab 如何绘制随机矩阵的柱状图，以及如何知道使用hist命令的箱子数量？
我有一个1x1000大小的矩阵。如何绘制此随机数据的直方图。我无法应用Matlab 如何绘制随机矩阵的柱状图，以及如何知道使用hist命令的箱子数量？,matlab,octave,Matlab,Octave,我有一个1x1000大小的矩阵。如何绘制此随机数据的直方图。我无法应用hist命令，因为它需要数量的箱子。当输出为该矩阵时，如何确定箱子数量。它的直方图和pdf的性质是什么 m_SIR_SU = Columns 1 through 12 3.1143 12.8266 -10.4597 20.8193 1.2036 22.1917 16.6404 -2.1747 14.7870 -0.1750 17.9230 21.6503 Col
histm_SIR_SU =
Columns 1 through 12
3.1143 12.8266 -10.4597 20.8193 1.2036 22.1917 16.6404 -2.1747 14.7870 -0.1750 17.9230 21.6503
Columns 13 through 24
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Columns 25 through 36
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Columns 37 through 48
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Columns 49 through 60
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Columns 61 through 72
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Columns 73 through 84
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Columns 85 through 96
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Columns 97 through 108
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Columns 109 through 120
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Columns 121 through 132
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Columns 133 through 144
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Columns 145 through 156
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Columns 157 through 168
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Columns 169 through 180
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Columns 181 through 192
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Columns 193 through 204
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Columns 205 through 216
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Columns 217 through 228
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Columns 229 through 240
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Columns 241 through 252
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Columns 253 through 264
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Columns 265 through 276
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Columns 277 through 288
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Columns 289 through 300
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Columns 301 through 312
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Columns 313 through 324
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Columns 325 through 336
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Columns 337 through 348
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Columns 349 through 360
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Columns 361 through 372
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Columns 373 through 384
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Columns 385 through 396
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Columns 397 through 408
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Columns 409 through 420
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Columns 421 through 432
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Columns 433 through 444
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Columns 445 through 456
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Columns 457 through 468
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Columns 469 through 480
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Columns 481 through 492
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Columns 493 through 504
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Columns 505 through 516
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Columns 517 through 528
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Columns 529 through 540
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Columns 541 through 552
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Columns 553 through 564
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Columns 565 through 576
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Columns 577 through 588
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Columns 589 through 600
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Columns 601 through 612
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Columns 613 through 624
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Columns 625 through 636
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Columns 637 through 648
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Columns 649 through 660
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Columns 661 through 672
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Columns 673 through 684
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Columns 685 through 696
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Columns 697 through 708
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Columns 709 through 720
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Columns 721 through 732
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Columns 733 through 744
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Columns 745 through 756
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Columns 757 through 768
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Columns 769 through 780
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Columns 781 through 792
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Columns 793 through 804
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Columns 805 through 816
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Columns 817 through 828
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Columns 829 through 840
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Columns 841 through 852
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Columns 853 through 864
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Columns 865 through 876
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Columns 877 through 888
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Columns 889 through 900
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Columns 901 through 912
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Columns 913 through 924
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Columns 925 through 936
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Columns 937 through 948
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Columns 949 through 960
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Columns 961 through 972
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Columns 973 through 984
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Columns 985 through 996
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Columns 997 through 1000
14.5318 8.2633 8.3647 20.6225
取决于您想要的粒度。我的直方图经验来自于照片分析和从图像生成颜色和亮度直方图——所以我通常有更多的数据要处理，而且我已经知道了我的界限（上限和下限） 在1000分的情况下，100桶可能太多，但20-50桶可能就可以了。因此，搜索最小值和最大值的数据，使用该数据为每个桶创建适当的边界，然后循环通过数据，增加相关桶上的计数器 比如：
class MyHistogram
{
int[] _histogram;
public void MyHistogram(int bucketCount, double[] data)
{
double minValue = data[0];
double maxValue = data[0];
for(int i=0;i<data.Length;i++)
{
if (data[i] < minValue) minValue = data[i];
if (data[i] > maxValue) maxValue = data[i];
}
double bucketSize = (maxValue - minValue) / bucketCount;
_histogram = new int[bucketCount];
for (int i = 0; i < data.Length; i++)
{
int bucket = (int)((data[i] - minValue) / bucketSize);
_histogram[bucket]++;
}
}
public int[] Histogram { get { return _histogram } }
}
类MyHistogram
{
int[]_直方图；
公共无效MyHistogram（整数bucketCount，双[]数据）
{
双最小值=数据[0]；
double maxValue=数据[0]；
对于（int i=0；i maxValue）maxValue=data[i]；
}
双bucketSize=（maxValue-minValue）/bucketCount；
_直方图=新整数[bucketCount]；
for（int i=0；i[n x] = hist(x);
bar( x, n ); %plot
pdf = n/sum(n);
请参阅相关的只需尝试一下
hist（m_SIR_SU）histhist