arcpy-字段唯一值、重复值、最值、平均值、方差、标准差、中数、众数 



插个广告，制作ArcGIS的Tool工具学习下面的教程就对了：


零基础学习Python制作ArcGIS自定义工具观看链接


《零基础学习Python制作ArcGIS自定义工具》课程简介


 1 import arcpy
 2 import numpy
 3 from arcpy import da
 4 
 5 def GetFieldUniqueValue(inTable,inField):
 6     value_list=[]
 7     rows=arcpy.da.SearchCursor(inTable,inField)
 8     for row in rows:
 9         if row[0] not in value_list:
10             value_list.append( str(row[0]).decode('utf-8') )
11     del row
12     del rows
13     return value_list
14 
15 def GetDuplicateValue(inTable,inField):
16     dic={}
17     rows=arcpy.da.SearchCursor(inTable,inField)
18     for row in rows:
19         if row[0] in dic.keys():
20             dic[row[0]]=dic[row[0]]+1
21         else:
22             dic[row[0]]=1
23     del row
24     del rows
25     for key,value in dic.items():
26         if value==1:
27             del dic[key]
28     return dic
29 
30 def GetFieldMode(inTable,inField):
31     dic=GetDuplicateValue(inTable,inField)
32     lst=[value for key,value in dic.items()]
33     num=max(lst)
34     modeList=[]
35     for key,value in dic.items():
36         if value==num:
37             modeList.append(key)
38     return modeList
39 
40 def GetFieldValueList(inTable,inField):
41     value_list=[]
42     rows=arcpy.da.SearchCursor(inTable,inField)
43     for row in rows:
44         value_list.append(row[0])
45     del row
46     del rows
47     return value_list
48 
49 def main():
50     in_fc=arcpy.GetParameterAsText(0)
51     in_fld=arcpy.GetParameterAsText(1)
52     c=arcpy.GetParameterAsText(2)
53     if c== "Unique value":
54         uniqueValue=GetFieldUniqueValue(in_fc,in_fld)
55         arcpy.AddMessage("Unique Value:")
56         for i in uniqueValue:
57             arcpy.AddMessage(str(i))
58     if c=="Duplicate value":
59         duplicateValue= GetDuplicateValue(in_fc,in_fld)
60         arcpy.AddMessage("Duplicate Value,Count:")
61         for key,value in duplicateValue.items():
62             arcpy.AddMessage("{0},{1}".format(key,value))
63     if c=="Max/Min/Sum/Average etc.":
64         valueList=GetFieldValueList(in_fc,in_fld)
65         arcpy.AddMessage("Field Name:{}".format(in_fld))
66         arcpy.AddMessage("Max:{}".format(max(valueList)))
67         arcpy.AddMessage("Min:{}".format(min(valueList)))
68         arcpy.AddMessage("Sum:{}".format(sum(valueList)))
69         arcpy.AddMessage("Average:{}".format(numpy.mean(valueList)))
70         arcpy.AddMessage("Median:{}".format(numpy.median(valueList)))
71         arcpy.AddMessage("Mode:{}".format(GetFieldMode(in_fc,in_fld)))
72         arcpy.AddMessage("Variance:{}".format(numpy.var(valueList)))
73         arcpy.AddMessage("Standard Deviation:{}".format(numpy.std(valueList)))










            

            
posted @ 
2019-09-23 20:49 
yzhyingcool 
阅读(1751) 
评论(0) 
编辑 
收藏 
举报