# Statistics

## 概要

Calculates statistics for each cell of an image based on a defined focal neighborhood.

## ディスカッション

For more information about the methods and band orders used with this function, see the Statistics raster function.

The referenced raster dataset for the raster object is temporary. To make it permanent, you can call the raster object's save method.

## 構文

`Statistics (raster, kernel_columns, kernel_rows, stat_type, {fill_no_data_only})`
 パラメーター 説明 データ タイプ raster The input raster on which to perform focal statistics. Raster kernel_columns The number of pixel columns to use in your focal neighborhood dimension.(デフォルト値は次のとおりです 3) Integer kernel_rows The number of pixel rows to use in your focal neighborhood dimension.(デフォルト値は次のとおりです 3) Integer stat_type Specify the type of statistics to calculate.Max — Calculates the maximum value of the pixels within the neighborhood.Mean — Calculates the average value of the pixels within the neighborhood. This is the default.Min — Calculates the minimum value of the pixels within the neighborhood.StandardDeviation —Calculates the standard deviation value of the pixels within the neighborhood.(デフォルト値は次のとおりです Mean) String fill_no_data_only Specify whether NoData values are ignored in the analysis. True—Fills NoData pixels only. This is the default.False—NoData pixels will not be filled.(デフォルト値は次のとおりです False) Boolean

 データ タイプ 説明 Raster The output raster.

## コードのサンプル

Statistics example

Perform a neighborhood statistics calculation.

``````import arcpy
from arcpy import env
from arcpy.ia import *

# Set environment settings
env.workspace = "C:/statistics_example/data"

# Set local variables
inRaster = "elevation.tif"
kernel_columns=5
kernel_rows=5
stat_type="Mean"
fill_no_data_only = True

# for each pixel, calculate the average value of pixels within its neighborhood. the neighborhood size is 5x5
output = Statistics(imagePath1, kernel_columns, kernel_rows, stat_type, fill_no_data_only)
output.save("statistics_mean_5_by_5.tif")``````

#### 関連トピック

##### 関連トピック
1. An overview of the Spatial Analyst functions