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StatisticsHistogram

汇总

计算栅格的统计数据和直方图。

讨论

有关此函数工作原理的详细信息，请参阅 统计数据和直方图 栅格函数。

栅格对象所引用的栅格数据集是临时性的。 要将其设置为永久，可以调用栅格对象的 save 方法。

语法

StatisticsHistogram(raster, statistics, histogram)

参数 说明 数据类型

raster

The input raster.

Raster

statistics

List of statistical information, based on predefined statistics for each band. Statistics specified for a single-band raster are, for example: statistics = [{"min": 0, "max": 23.06, mean": 4.547517, "standardDeviation": 2.6870, "count": 10000, "median": 5, "mode": 6}].

Statistics specified for a three-band raster are, for example: statistics = [{"min": 0, "max": 23.06, "mean": 4.547517, "standardDeviation": 2.6870, "count": 10000, "median": 5, "mode": 6}, {"min":2, "max": 25, "mean": 5.32, "standardDeviation": 3.42, "count": 10000, "median": 6, "mode": 6}, {"min": 5, "max": 53.06, "mean": 35.23, "standardDeviation": 6.3270, "count": 10000, "median": 36, "mode": 6}].

List

histogram

Dictionary of histogram information, based on predefined histogram for each band.

Enter the dictionary of histogram information using the example below:

{
  "rasterFunction": "StatisticsHistogram",
  "rasterFunctionArguments": {
    "histograms": [{
      "size": 256,
      "min": 0,
      "max": 23.064547032777931,
      "counts": [559,
        172,
        217,
        # ... //256 elements for each of the bins in this example
        ]
    }
                   ]
  }
}

Dictionary

返回值

数据类型 说明

Raster

已定义统计数据和直方图的输出栅格。

代码示例

StatisticsHistogram 示例

计算栅格的统计数据和直方图。

import arcpy

StatisticsHistogram_raster = arcpy.sa.StatisticsHistogram(imagePath1, [-4.514, 4.338, 0.0043, 1.0], None)