【Python】矢量影像批量裁剪、合并

前言

又到每日分享Python小技巧的时候了，今天给大家分享啥呢？大家要不要猜一猜，今天给大家分享矢量影像批量裁剪以及合并。

听起来有点不懂，看完你就懂了，扩展知识。

矢量批量裁剪的代码

在：chp10\python\矢量批量裁剪.tbx\矢量批量裁剪，可以直接运行，右键编辑查看代码

代码如下：

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#---------------------------------------------------------------------------
#1.py# Created on: 星期日 一月 10 2018 11:02:13 上午
#(generated by ArcGIS/ModelBuilder)
#Usage: 矢量图批量切割， by 闫磊 4个参数
#原始数据 是图层，可以多选
#切割工具是是接幅表 或者行政
#字段是输出mdb名称
#输出路径
#---------------------------------------------------------------------------
#Create Geoprocessing Object
import  sys, os, string
import arcpyfrom arcpy import env
 defaultencoding = 'utf-8'if sys.getdefaultencoding() != defaultencoding:    
 reload(sys)   
  sys.setdefaultencoding(defaultencoding)
arcpy.env.overwriteOutput = True

inworkspace  = arcpy.GetParameterAsText(0)
arcpy.AddMessage("输入数据="+inworkspace)
clipshp  = arcpy.GetParameterAsText(1)
arcpy.AddMessage("裁剪=clipshp"+clipshp)
fieldname= arcpy.GetParameterAsText(2)
arcpy.AddMessage("字段=fieldname"+fieldname)
outworkspace  = arcpy.GetParameterAsText(3)
arcpy.AddMessage("输出="+outworkspace)
mdbbool  = arcpy.GetParameterAsText(4)
arcpy.AddMessage("是否mdb="+mdbbool)
desc = arcpy.Describe(clipshp)
filepath=desc.CatalogPathp=filepath.find(".mdb")
ftype="String"for field in desc.fields:    
if field.Name ==fieldname:         
ftype=field.Type        
breakarcpy.AddMessage(u"默认地理数据库:"+arcpy.env.scratchWorkspace)jfb_
Select=arcpy.env.scratchWorkspace+"\yl999"#不能c:\要c:\\或者 c:/
rows = arcpy.SearchCursor(clipshp)
#arcpy.AddMessage(u"5=执行到这里")row = rows.next()#arcpy.AddMessage(u"6=执行到这里")while row:    #arcpy.AddMessage(u"7=执行到这里")    fieldvalue =""+ str(row.getValue(fieldname))    #arcpy.AddMessage(u"值fieldvalue="+fieldvalue)    if p>0: #mdb        Expression="["+fieldname +"]="    else:        Expression="\""+fieldname +"\"="    #arcpy.AddMessage(u"表达式Expression1="+Expression)       if ftype=="String":        
Expression=Expression+"'"+fieldvalue+"'"    
else:        
Expression=Expression+fieldvalue
    #arcpy.AddMessage(u"Expression2="+Expression)    
    arcpy.Select_analysis(clipshp, jfb_Select,Expression)   
     #arcpy.AddMessage(u"6=clipshp"+clipshp)    out_mdb=""    #arcpy.AddMessage("======================================================out_mdb"+out_mdb)    if mdbbool=="true":        
     out_mdb=outworkspace + "\\"+fieldvalue+".mdb"  #os.path.basename(dataset)         
     else:        
     out_mdb=outworkspace + "\\"+fieldvalue+".gdb"     
     arcpy.AddMessage(u"out_mdb"+out_mdb)    
     if not arcpy.Exists(out_mdb):        
     if mdbbool=="true":            arcpy.CreatePersonalGDB_management(os.path.dirname(out_mdb),os.path.basename(out_mdb))        
     else:            
     arcpy.CreateFileGDB_management(os.path.dirname(out_mdb),os.path.basename(out_mdb))
    mydatasets= string.split(inworkspace,";")

    for dataset in mydatasets:
        try:            
        mylayer=os.path.basename(dataset)            
        arcpy.AddMessage(u"clip:"+dataset+" to "+out_mdb+"\\"+ mylayer)            
        mylayer=mylayer.replace("(","")            
        mylayer=mylayer.replace(")","")            
        arcpy.Clip_analysis(dataset, jfb_Select,out_mdb+"\\"+ mylayer, "")        
        except Exception, ErrorDesc:                
        #If an error set output boolean parameter "Error" to True.           
         arcpy.AddError(str(ErrorDesc))    
         row = rows.next()if arcpy.Exists(jfb_Select):    
         arcpy.Delete_management(jfb_Select)

作用：使用一个矢量图层批量裁剪多个矢量数据，字段值是裁剪后数据库名称

批量裁剪参数设置界面

界面如下：

批量裁剪运行界面

是否mdb，勾上是mdb,不勾是gdb

◾矢量批量合并

在：chp10\python\批量合并.tbx\数据批量合并下，可以直接运行，右键编辑可以查看代码

代码如下：

import sys
##############################################
import arcpy
import string
try:    
workspace =arcpy.GetParameterAsText(0)  #'C:\Users\Administrator\Desktop\\cc'

    outdb =arcpy.GetParameterAsText(1)   #'C:\Users\Administrator\Desktop\\lutian.mdb'    
    arcpy.env.workspace = workspace    
    arcpy.AddMessage("outdb:"+outdb)    
    files = arcpy.ListWorkspaces("","")    
    for File in files:        
    arcpy.AddMessage("File:"+File)
        arcpy.env.workspace = outdb        
        fcs = arcpy.ListFeatureClasses()        
        for fc in fcs:            
        arcpy.AddMessage("fc:"+fc)            
        if arcpy.Exists(File + "\\" + fc):                
        arcpy.Append_management([ File + "\\" + fc], outdb + "\\" + fc,"NO_TEST","","")           
else:                
arcpy.AddMessage("not exists:"+File + "\\" + fc)
fcs = arcpy.ListTables()        
for fc in fcs:            
arcpy.AddMessage("fc:"+fc)            
if arcpy.Exists(File + "\\" + fc):                
arcpy.Append_management([File + "\\" + fc], outdb + "\\" + fc,"NO_TEST","","")            
else:                
arcpy.AddMessage("not exists:"+File + "\\" + fc)
dss = arcpy.ListDatasets()        
for ds in dss:            
arcpy.AddMessage("ds:"+ds)            
arcpy.env.workspace = outdb+"\\"+ds            
fcs1 = arcpy.ListFeatureClasses()            
for fc1 in fcs1:                
arcpy.AddMessage("fc1:"+fc1)                
if arcpy.Exists(File + "\\" + ds + "\\" + fc1):                    
arcpy.Append_management([File + "\\" + ds + "\\" + fc1], outdb + "\\" + ds + "\\" + fc1,"NO_TEST","","")                
else:                    
arcpy.AddMessage("not exists:"+File + "\\" + ds + "\\" + fc1)
except arcpy.ExecuteError:    
arcpy.AddWarning(arcpy.GetMessages())

参数如下，工作空间可以是地理数据库（文件地理数据或者个人地理数据），也是可以一个文件夹，这里建议是数据库

批量合并参数设置界面

运行界面如下：

批量合并运行界面

◾影像批量裁剪

在：chp10\python\影像切割.tbx\影像切割，可以直接运行，右键编辑可以查看程序源代码

源代码如下：

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import sys, os, string,types
import arcpy
from arcpy import env

arcpy.env.overwriteOutput = True

oldraster  = arcpy.GetParameterAsText(0)
arcpy.AddMessage("1oldraster="+oldraster)
clipshp  = arcpy.GetParameterAsText(1)
arcpy.AddMessage("2clipshp="+clipshp)
fieldname= arcpy.GetParameterAsText(2)
arcpy.AddMessage("3fieldname="+fieldname)
outworkspace= arcpy.GetParameterAsText(3)
arcpy.AddMessage("4="+outworkspace)

arcpy.CheckOutExtension("spatial")
rows = arcpy.SearchCursor(clipshp)

jfb_Select=outworkspace+"/temp.shp" #不能c:\要c:\\或者c:/
for row in rows:

    try:        
    b=1       
     value=row.getValue(fieldname)        
     #gp.AddMessage("value="+value)        
     if (type(value) is types.IntType):           
      fieldvalue = str(value)            
      b=2        
      elif (type(value)  is types.StringType):   
      #是否string类型            
      fieldvalue = value        
      else:            
      fieldvalue = str(value)
        arcpy.AddMessage("fieldvalue="+fieldvalue)        
        if b==2:           
         Expression="\""+fieldname +"\" ="+fieldvalue+""       
          else:            
          Expression="\""+fieldname +"\" ='"+fieldvalue+"'"        arcpy.AddMessage("Expression="+Expression+",jfb_Select="+jfb_Select+",clipshp="+clipshp)        
          arcpy.Select_analysis(clipshp, jfb_Select, Expression)
        out_raster =outworkspace+"/"+fieldvalue+".tif"       
         arcpy.gp.ExtractByMask_sa(oldraster, jfb_Select, out_raster)   
          except Exception, ErrorDesc:       
           #If an error set output boolean parameter "Error" to True.       
            arcpy.AddError(str(ErrorDesc))if arcpy.Exists(jfb_Select):arcpy.Delete_management(jfb_Select)

作用：使用一个矢量数据，批量裁剪一个影像，矢量字段值是裁剪后影像的数据名，格式为tif

参数：

影像批量裁剪参数设置界面

运行界面如下：

最后

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我。