第7章

7.2  通用精确和模糊查询

#coding=utf8
import arcpy

import os
import sys
import math

def initProgress(hint,num):
    arcpy.SetProgressor("step", u"正在"+hint,0,num,1)
def step():
    arcpy.SetProgressorLabel(u"正在进行....")
    arcpy.SetProgressorPosition()
def freeProgress():
    arcpy.ResetProgressor()

def getCount(inFeature):
    result = arcpy.GetCount_management(inFeature)
    count= int(result.getOutput(0))
    return count
def getWorkspace(inFeature):
    desc = arcpy.Describe(inFeature)
    path=desc.path.lower()
    if path.endswith(".mdb") or path.endswith(".gdb"):
        return path
    if os.path.isdir(path):#shp
        return path
    outPath, outFC = os.path.split(path)
    return outPath

def FieldExists(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if field.Name.upper() ==FieldName:
            return True
            break
    return False
#获得字段长度
def getFieldlen(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if  field.Name.upper() ==FieldName:
            return field.length

    return -1
#获得字段类型是否为文本
def getFieldTypeIsText(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if field.Name.upper() ==FieldName:
            return field.type=="String"

    return False

def Main():
##    count=getCount(sFeature)
##    if count < 1:
##        arcpy.AddMessage(sFeature+u"没有数据")
##        return
    desc = arcpy.Describe(sFeature)
    newFieldName=FieldName #arcpy.AddFieldDelimiters(sFeature, FieldName) #对应mdb有问题，不加
    IsText=getFieldTypeIsText(sFeature, FieldName)
    dpath=getWorkspace(sFeature)
    match="%"
    if dpath.endswith(".mdb"):
        match="*"
    if IsText: #文本
        if b:
            sql="{0} like '{1}{2}{1}'".format(newFieldName,match,myvalue)
        else:

            sql="{0} = '{1}'".format(newFieldName,myvalue)
    else:
        if b:
            if dpath.endswith(".mdb"):
                sql="str({0}) like '{1}{2}{1}'".format(newFieldName,match,myvalue)
            elif dpath.endswith(".gdb"):
                sql="CAST({0} AS  varchar(20))  like '{1}{2}{1}'".format(newFieldName,match,myvalue)
            else:#shp
                sql="CAST({0} as character)  like '{1}{2}{1}'".format(newFieldName,match,myvalue)

        else:
            sql="{0} = {1}".format(newFieldName,myvalue)

    if desc.dataType=="FeatureLayer":
        try:
            arcpy.SelectLayerByAttribute_management (sFeature, "NEW_SELECTION", sql)
        except Exception as e:
            arcpy.AddError(e)
            arcpy.AddMessage(u"语法"+sql+"错误".encode('gbk')) #汉字乱码的解决

        if getCount(sFeature)<1:
            arcpy.AddWarning(u""+sql+"没有查询到记录")
    else:
        arcpy.AddMessage("不是图层")

sFeature  = arcpy.GetParameterAsText(0)
FieldName  = arcpy.GetParameterAsText(1)
myvalue=arcpy.GetParameterAsText(2)
b=arcpy.GetParameter(3)
Main()

7.3.1 数据均分

#coding=utf8
import arcpy

import os
import sys
import math

def initProgress(hint,num):
    arcpy.SetProgressor("step", u"正在"+hint,0,num,1)
def step():
    arcpy.SetProgressorLabel(u"正在进行....")
    arcpy.SetProgressorPosition()
def freeProgress():
    arcpy.ResetProgressor()

def getCount(inFeature):
    result = arcpy.GetCount_management(inFeature)
    count= int(result.getOutput(0))
    return count
def getWorkspace(inFeature):
    desc = arcpy.Describe(inFeature)
    path=desc.path.lower()
    if path.endswith(".mdb") or path.endswith(".gdb"):
        return path
    if os.path.isdir(path):#shp
        return path
    outPath, outFC = os.path.split(path)
    return outPath

def AddAllField(TableName,outFeature):
    desc = arcpy.Describe(TableName)
    plist = []
    for field in desc.fields:
        if field.type!="Geometry" and field.type!="OID":
            plist.append(field.Name)
            arcpy.AddField_management(outFeature,field.Name ,field.type,field.precision,field.scale,field.length)
    return plist

def getLayer(layername):
    layername=layername.upper()
    mxd = arcpy.mapping.MapDocument("CURRENT")
    try:
        for lyr in arcpy.mapping.ListLayers(mxd):
            if lyr.name.upper()==layername:
                return lyr
        return None
    finally:
        del mxd
def FieldExists(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if field.Name.upper() ==FieldName:
            return True
            break
    return False

#获得字段类型是否为文本
def getFieldTypeIsText(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if field.Name.upper() ==FieldName:
            return field.type=="String"

    return False

def Main():
    count=getCount(inFeature)
    if count < 1:
        arcpy.AddMessage(inFeature+u"没有数据")
        return
    outPath, outFC = os.path.split(inFeature)

    desc = arcpy.Describe(inFeature)
    isTable=desc.dataType=="TableView"
    if dividenum<2:
        if isTable==True:
            arcpy.TableSelect_analysis(inFeature, outworkspace+"/"+outFC)
        else:
            arcpy.Select_analysis(inFeature, outworkspace+"/"+outFC)
        return
    myFID="my_FID"
    if not FieldExists(inFeature,myFID):
        arcpy.AddField_management(inFeature,myFID , "LONG", "", "")
    k=1
    with arcpy.da.UpdateCursor(inFeature, myFID) as cursor:
        for row in cursor:
            row[0]=k
            k=k+1
            cursor.updateRow(row)
    num=getCount(inFeature)
    nn=num/dividenum
    initProgress(u"分割",dividenum)
    for i in range(0,dividenum):
        step()
        if i==dividenum-1:
            where=myFID+">"+str(i*nn)+" and "+myFID+"<="+str(num)
        else:
            where=myFID+">"+str(i*nn)+" and "+myFID+"<="+str((i+1)*nn)

        arcpy.AddMessage("where===="+where)
        if isTable==True:
            arcpy.TableSelect_analysis(inFeature, outworkspace+"/"+outFC+str(i),where)
        else:
            arcpy.Select_analysis(inFeature, outworkspace+"/"+outFC+str(i),where)
    freeProgress()
inFeature  = arcpy.GetParameterAsText(0)
dividenum = arcpy.GetParameter(1)
outworkspace  = arcpy.GetParameterAsText(2)

Main()

7.3.2 固定行数分割

#coding=utf8
import arcpy

import os
import sys
import math

def initProgress(hint,num):
    arcpy.SetProgressor("step", u"正在"+hint,0,num,1)
def step():
    arcpy.SetProgressorLabel(u"正在进行....")
    arcpy.SetProgressorPosition()
def freeProgress():
    arcpy.ResetProgressor()

def getCount(inFeature):
    result = arcpy.GetCount_management(inFeature)
    count= int(result.getOutput(0))
    return count
def getWorkspace(inFeature):
    desc = arcpy.Describe(inFeature)
    path=desc.path.lower()
    if path.endswith(".mdb") or path.endswith(".gdb"):
        return path
    if os.path.isdir(path):#shp
        return path
    outPath, outFC = os.path.split(path)
    return outPath

def AddAllField(TableName,outFeature):
    desc = arcpy.Describe(TableName)
    plist = []
    for field in desc.fields:
        if field.type!="Geometry" and field.type!="OID":
            plist.append(field.Name)
            arcpy.AddField_management(outFeature,field.Name ,field.type,field.precision,field.scale,field.length)
    return plist

def getLayer(layername):
    layername=layername.upper()
    mxd = arcpy.mapping.MapDocument("CURRENT")
    try:
        for lyr in arcpy.mapping.ListLayers(mxd):
            if lyr.name.upper()==layername:
                return lyr
        return None
    finally:
        del mxd
def FieldExists(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if field.Name.upper() ==FieldName:
            return True
            break
    return False

#获得字段类型是否为文本
def getFieldTypeIsText(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if field.Name.upper() ==FieldName:
            return field.type=="String"

    return False

def Main():
    count=getCount(inFeature)
    if count < 1:
        arcpy.AddMessage(inFeature+u"没有数据")
        return
    outPath, outFC = os.path.split(inFeature)

    desc = arcpy.Describe(inFeature)
    isTable=desc.dataType=="TableView"
    num=getCount(inFeature)
    if num<rownum:
        if isTable==True:
            arcpy.TableSelect_analysis(inFeature, outworkspace+"/"+outFC)
        else:
            arcpy.Select_analysis(inFeature, outworkspace+"/"+outFC)
        return
    myFID="my_FID"
    if not FieldExists(inFeature,myFID):
        arcpy.AddField_management(inFeature,myFID , "LONG", "", "")
    k=1
    with arcpy.da.UpdateCursor(inFeature, myFID) as cursor:
        for row in cursor:
            row[0]=k
            k=k+1
            cursor.updateRow(row)

    nn=num/rownum
    if nn*rownum!=num:
        nn=nn+1
    initProgress(u"分割",nn)
    for i in range(0,nn):
        step()
        if i==nn-1:
            where=myFID+">"+str(i*rownum)+" and "+myFID+"<="+str(num)
        else:
            where=myFID+">"+str(i*rownum)+" and "+myFID+"<="+str((i+1)*rownum)

        arcpy.AddMessage("where===="+where)
        if isTable==True:
            arcpy.TableSelect_analysis(inFeature, outworkspace+"/"+outFC+str(i),where)
        else:
            arcpy.Select_analysis(inFeature, outworkspace+"/"+outFC+str(i),where)
    freeProgress()

inFeature  = arcpy.GetParameterAsText(0)
rownum = arcpy.GetParameter(1)
outworkspace  = arcpy.GetParameterAsText(2)

Main()

7.4  属性查询-消除指定面积

#coding=utf8
import arcpy

import os
import sys
import math


def getCount(inFeature):
    result = arcpy.GetCount_management(inFeature)
    count= int(result.getOutput(0))
    return count

def FieldExists(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if field.Name.upper() ==FieldName:
            return True
            break
    return False

def Main():
    count=getCount(inFeature)
    if count < 1:
        arcpy.AddMessage(inFeature+u"没有数据")
        return

    desc=arcpy.Describe(inFeature)
    #清除选择对象
    datatype = desc.datatype
    areaField=""
    #arcpy.AddMessage(u"areaField="+areaField)
    if datatype=='FeatureLayer':#清除选择
        arcpy.SelectLayerByAttribute_management(inFeature, "CLEAR_SELECTION")
        arcpy.RefreshActiveView()
        areaField=desc.featureClass.areaFieldName #获得要素
    else:
        areaField=desc.areaFieldName
    if areaField=="":
        areaField="YL_Area"
    if not FieldExists(inFeature,areaField):
        arcpy.AddField_management(inFeature,areaField , "DOUBLE")
        arcpy.CalculateField_management(inFeature,areaField,"!shape.area!","PYTHON") #计算面积
    myselect="myselect"
    arcpy.MakeFeatureLayer_management(inFeature, myselect)
    count=getCount(myselect)
    if count<1:
        arcpy.AddWarning(u"没有小于指定面积")
        return
    arcpy.SelectLayerByAttribute_management(myselect, "NEW_SELECTION",areaField+"<"+str(minarea))

    arcpy.Eliminate_management(myselect,outFeature,"LENGTH")
    num=getCount(outFeature)
    arcpy.AddMessage("消除"+str(count-num)+"个")

inFeature  = arcpy.GetParameterAsText(0)
minarea=arcpy.GetParameter(1)
outFeature = arcpy.GetParameterAsText(2)
Main()

7.5  属性查询-按属性分割

#coding=utf8
import arcpy

import os
import sys
import math

def initProgress(hint,num):
    arcpy.SetProgressor("step", u"正在"+hint,0,num,1)
def step():
    arcpy.SetProgressorLabel(u"正在进行....")
    arcpy.SetProgressorPosition()
def freeProgress():
    arcpy.ResetProgressor()

def getCount(inFeature):
    result = arcpy.GetCount_management(inFeature)
    count= int(result.getOutput(0))
    return count

#获得字段类型是否为文本
def getFieldTypeIsText(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if field.Name.upper() ==FieldName:
            return field.type=="String"

    return False

def Main():
    count=getCount(inFeature)
    if count < 1:
        arcpy.AddMessage(inFeature+u"没有数据")
        return
    jfb_Select=arcpy.env.scratchWorkspace+"/yl_999888"#不能c:要c:\或则 c:/
    arcpy.Frequency_analysis(inFeature,jfb_Select,FieldName,summary_fields="#")
    num=getCount(jfb_Select)
    initProgress(u"导出数据",num)
    Fieldnum=len(Fields)
    Fieldtypes=[]
    for i in range(0,Fieldnum):
        if getFieldTypeIsText(jfb_Select,Fields[i]):
            Fieldtypes.append(1) #字符串
        else:
            Fieldtypes.append(0) #不是字符串

    desc = arcpy.Describe(inFeature)
    isTable=desc.dataType=="TableView"

    with arcpy.da.SearchCursor(jfb_Select, Fields) as cursor:
        for row in cursor:
            step()
            where=""
            Value=""
            for i in range(0,Fieldnum):
                if Fieldtypes[i]==1:
                    where=where+Fields[i]+"='"+str(row[i])+"'"
                else:
                    where=where+Fields[i]+"="+str(row[i])
                Value=Value+str(row[i])
                if i<Fieldnum-1:
                    where=where+" and "
                    Value=Value+"_"

            arcpy.AddMessage("Value==="+Value)
            arcpy.AddMessage("where==="+where)
            outFC = arcpy.ValidateTableName(Value,outworkspace)
            arcpy.AddMessage("outFC==="+outFC)
            if isTable==True:
                arcpy.TableSelect_analysis(inFeature, outworkspace+"/"+outFC, where)
            else:
                arcpy.Select_analysis(inFeature, outworkspace+"/"+outFC, where)
    freeProgress()

inFeature  = arcpy.GetParameterAsText(0)
FieldName = arcpy.GetParameterAsText(1)
outworkspace  = arcpy.GetParameterAsText(2)
Fields= FieldName.split(";")

Main()

7.6 空间查询-获得一个省有多少的城市

#coding=utf8
import arcpy

import os
import sys
import math

def initProgress(hint,num):
    arcpy.SetProgressor("step", u"正在"+hint,0,num,1)
def step():
    arcpy.SetProgressorLabel(u"正在进行....")
    arcpy.SetProgressorPosition()
def freeProgress():
    arcpy.ResetProgressor()

def getCount(inFeature):
    result = arcpy.GetCount_management(inFeature)
    count= int(result.getOutput(0))
    return count

def getallcity(pgeo):
    yllayer="yllayer"
    arcpy.MakeFeatureLayer_management(cityFeature, yllayer)
    arcpy.SelectLayerByLocation_management(yllayer, 'intersect', pgeo)
    fields = [cityFieldName]

    with arcpy.da.SearchCursor(yllayer, fields) as cursor:
        mystr=""
        for row in cursor:
            mystr=mystr+row[0]+","
        if mystr.endswith(","):
            return mystr[:-1]
        return mystr


def Main():
    count=getCount(sFeature)
    if count < 1:
        arcpy.AddMessage(sFeature+u"没有数据")
        return
    fields = ("SHAPE@", FieldName)
    initProgress(u"正在更新",count)

    with arcpy.da.UpdateCursor(sFeature, fields) as cursor:
        for row in cursor:
            step()
            pgeo=row[0]
            row[1]=getallcity(pgeo)
            cursor.updateRow(row)
    freeProgress()

sFeature  = arcpy.GetParameterAsText(0)
FieldName  = arcpy.GetParameterAsText(1)
cityFeature=arcpy.GetParameterAsText(2)
cityFieldName=arcpy.GetParameterAsText(3)

Main()

7.7  空间查询-查询一个省相邻的省份

#coding=utf8
import arcpy

import os
import sys
import math

def initProgress(hint,num):
    arcpy.SetProgressor("step", u"正在"+hint,0,num,1)
def step():
    arcpy.SetProgressorLabel(u"正在进行....")
    arcpy.SetProgressorPosition()
def freeProgress():
    arcpy.ResetProgressor()

def getCount(inFeature):
    result = arcpy.GetCount_management(inFeature)
    count= int(result.getOutput(0))
    return count
#获得字段长度
def getFieldlen(TableName,FieldName):
    desc = arcpy.Describe(TableName)
    FieldName=FieldName.upper()
    for field in desc.fields:
        if  field.Name.upper() ==FieldName:
            return field.length

    return -1
#获得相邻省份
def getxlpr(pgeo,FID):
    yllayer="yllayer"
    where_clause=OIDFieldName+"<>"+str(FID)
    arcpy.MakeFeatureLayer_management(sFeature, yllayer,where_clause)
    arcpy.SelectLayerByLocation_management(yllayer, 'intersect', pgeo)
    fields = [FieldName]

    with arcpy.da.SearchCursor(yllayer, fields) as cursor:
        mystr=""
        for row in cursor:
            mystr=mystr+row[0]+","
        if mystr.endswith(","):
            return mystr[:-1]
        return mystr

def Main():
    count=getCount(sFeature)
    if count < 1:
        arcpy.AddMessage(sFeature+u"没有数据")
        return
    Fieldlen=getFieldlen(sFeature,xlname)
    if Fieldlen<200:
        arcpy.AddMessage("Fieldlen="+str(Fieldlen)+",太短")
        return

    fields = ("SHAPE@", xlname,"OID@")
    initProgress(u"正在更新",count)

    with arcpy.da.UpdateCursor(sFeature, fields) as cursor:
        for row in cursor:
            step()
            pgeo=row[0]
            FID=row[2]
            row[1]=getxlpr(pgeo,FID)
            cursor.updateRow(row)
    freeProgress()

sFeature  = arcpy.GetParameterAsText(0)
FieldName  = arcpy.GetParameterAsText(1)
xlname=arcpy.GetParameterAsText(2) #相邻

desc = arcpy.Describe(sFeature)
OIDFieldName = desc.OIDFieldName

Main()
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原文地址：https://www.cnblogs.com/gisoracle/p/13604733.html