マルチバンド→シングルバンド

#coding:cp932
#マルチバンド → シングルバンド
 
import arcpy,os
 
 
inras = arcpy.GetParameterAsText(0) #入力ラスタ データセット
outWS = arcpy.GetParameterAsText(1) #出力ラスタ データセット
 
 
desc = arcpy.Describe(inras)
inpath = desc.catalogPath
BandCount = desc.bandCount
Bands = desc.children
desc2 = arcpy.Describe(outWS)
outWS_Type = desc2.workspaceType
 
arcpy.AddMessage("\n" + inras + u" は、" + str(BandCount) + u" バンドラスタです。\n")
 
if not arcpy.Exists(inpath) or desc.format == "AFR":
    if outWS_Type == u"FileSystem":
        tmpWS = arcpy.CreateFileGDB_management(outWS,"tmp.gdb")
        tmpRas = arcpy.CopyRaster_management(inras,tmpWS.getOutput(0) + os.sep + "tmp")
    elif outWS_Type == u"LocalDatabase":
        tmpWS = outWS
        tmpRas = arcpy.CopyRaster_management(inras,tmpWS + os.sep + "tmp")
    tmp_desc = arcpy.Describe(tmpRas)
    tmp_Bands = tmp_desc.children
 
    if "." in str(arcpy.GetParameter(0)):
        rasName = str(arcpy.GetParameter(0)).split(".")[0]
    else:
        rasName = str(arcpy.GetParameter(0))
 
    i = 0
 
    for tmp_Band in tmp_Bands:
        if outWS_Type == u"FileSystem":
            inras2 = tmpRas.getOutput(0) + os.sep + tmp_Band.name
            outras = outWS + os.sep + rasName + "_" + Bands[i].name + ".tif"
        elif outWS_Type == u"LocalDatabase":
            inras2 = tmpWS + os.sep + "tmp" + os.sep + tmp_Band.name
            outras = outWS + os.sep + rasName + "_" + Bands[i].name
 
        arcpy.CopyRaster_management(inras2,outras)
 
        arcpy.AddMessage("\n" + outras + u" の出力が完了しました。" + "\n")
        i += 1
 
    if outWS_Type == u"FileSystem":
        if arcpy.Exists(tmpWS.getOutput(0)):
            arcpy.Delete_management(tmpWS.getOutput(0))
    elif outWS_Type == u"LocalDatabase":
        if arcpy.Exists(tmpWS + os.sep + "tmp"):
            arcpy.Delete_management(tmpWS + os.sep + "tmp")
 
 
elif arcpy.Exists(inpath):
    for Band in Bands:
        inras2 = inpath + os.sep + Band.name
        if outWS_Type == u"FileSystem":
          outras = outWS + os.sep + os.path.basename(inpath).split(".")[0] + "_" + Band.name + "." + os.path.basename(inpath).split(".")[1]
        elif outWS_Type == u"LocalDatabase":
          outras = outWS + os.sep + os.path.basename(inpath).split(".")[0] + "_" + Band.name
        arcpy.CopyRaster_management(inras2,outras)
 
        arcpy.AddMessage("\n" + outras + u" の出力が完了しました。" + "\n")
 
del outWS,desc2,desc