Z 得分渲染 (空间统计)

许可等级:BasicStandardAdvanced

摘要

对某一区域的 z 得分应用从冷色(蓝色)到暖色(红色)的渲染方案。

插图

Z-score Rendering illustration

用法

语法

ZRenderer_stats (input_feature_class, field_to_render, output_layer_file)
参数说明数据类型
input_feature_class

包含一个具有标准化 z 得分的字段的要素类。

Feature Layer
field_to_render

包含 z 得分的字段的名称。

Field
output_layer_file

用于存储渲染信息的新的输出图层文件。文件名中必须包括 .lyr 扩展名。

Layer File

代码实例

Z 得分渲染示例(Python 窗口)

下面的 Python 窗口脚本演示了如何使用 Z 得分渲染工具。

import arcpy
arcpy.env.workspace = r"C:\data"
arcpy.ZRenderer_stats("hotspot_output.shp", "GiInvDst", "hotspot_output_rendered.lyr")
Z 得分渲染示例(独立 Python 脚本)

下面的独立 Python 脚本演示了如何使用 Z 得分渲染工具。

# Perform Hot Spot Analysis for assault incidents
 
# Import system modules
import arcpy
 
# Local variables...
workspace = r"C:\data"
input = "assaults.shp"
collect_output = "collect_output.shp"
collect_count_field = "Count"
hotspot_output = "hotspot_output.shp"
hotspot_output_rendered = "hotspot_output_rendered.lyr"
z_score_field_name = "GiInvDst"
 
try:
    # Set the current workspace (to avoid having to specify the full path to the feature classes each time)
    arcpy.env.workspace = workspace
 
    # Convert assault incidents into weighted point data
    # Process: Collect Events...
    arcpy.CollectEvents_stats(input, collect_output)
 
    # Calculate Getis-Ord Gi* statistic
    # Process: Hot Spot Analysis (Getis-Ord Gi*)...
    arcpy.HotSpots_stats(collect_output, collect_count_field, hotspot_output, "INVERSE_DISTANCE", "EUCLIDEAN_DISTANCE", "NONE", "#", "#", "#")
 
    # Render hot spot analysis
    # Process: ZScore Rendering...
    arcpy.ZRenderer_stats(hotspot_output, z_score_field_name, hotspot_output_rendered)
 
except:
    # If an error occurred when running the tool, print out the error message.
    print arcpy.GetMessages(2)

环境

相关主题

许可信息

ArcGIS for Desktop Basic:是
ArcGIS for Desktop Standard:是
ArcGIS for Desktop Advanced:是
9/15/2013