ML二:python批量修改文件名-测试KDTree

(1):#批量修改文件名

import os
import numpy as np
import string
import shutil
prefix =''#单引号,前缀!
sufix  ='txt'
renameFiles(srcdir,prefix,sufix)
def renameFiles(srcdir, prefix,sufix):     
    os.chdir(srcdir)
    srcfiles = os.listdir(srcdir)  #遍历文件   
    for srcfile in srcfiles:         
        sufixsrc = os.path.splitext( srcfile )[1][1:]
        destfile = srcfile.replace(sufixsrc,sufix)
        #destfile =  prefix + srcfile + sufix  
        #srcfile = os.path.join(srcdir, srcfile)  
        os.rename(srcfile, destfile)  

(2):#遍历特征,生成特征矩阵

import os
import fileinput
import numpy as np
import re   
#遍历特征,写入向量矩阵!   
#用于构建决策树
#无法建立索引,只能遍历查找K近邻!
path ='D:/Develope/MyVsWorks/Test2/X64_VS10_Test/pillow/ESF_TXT'    
filelist= os.listdir(path)
os.chdir(path)
vectorESF =[]

for filename in filelist:
    file = open(filename)
    linef = file.readlines(11)
    flist =linef[11].split()
    list =np.zeros((1,640))
    idx =0    
    for fvalue in flist:
        list[0,idx] =float(fvalue)
        ++idx       
    vectorESF.append(list[0])


(3):列表转化为矩阵

#列表无shape ,转化为矩阵!
lineNum = vectorESF.__len__()
dataset = np.mat(np.random.rand(lineNum,640))
for x in range(0,lineNum-1):
    for y in range(0,640 -1):
        dataset[x,y] =vectorESF[x][y]

(4):载入测试特征

#Test
testvec =np.zeros((1,640))
filename ='D:/Develope/MyVsWorks/Test2/X64_VS10_Test/pillow/ESF_TXT/ViewX_5.235987 ViewY_0.000000 ViewZ_6.141592..txt'
file = open(filename)
linef = file.readlines(11)
flist =linef[11].split()
idx =0
for fvalue in flist:
    testvec[0,idx] =float(fvalue)#载入到向量testvec[0]
    ++idx  

(5):由矩阵生成特征树 进行分类测试

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原文地址:https://www.cnblogs.com/wishchin/p/9200308.html