读取Aster库的.sli数据文件

from binascii import unhexlify
import numpy as np

dataarray = []
filename = raw_input('enter file name:')
f = open(filename, 'rb')
f.seek(0, 0)
index = 0
for i in range(0, 16):
    print "%3s" % hex(i),
print
for i in range(0, 16):
    print "%3s" % "#"
print
while True:
    temp = f.read(4)
    if len(temp) == 0:
        dataarray = np.array(dataarray)
        randomdata = np.random.randn(np.size(dataarray))
        dataarray = dataarray+randomdata
        print randomdata
        print dataarray
        break
    else:
        x = temp.encode('hex')
        x = unhexlify(x)                            # zifuchuan leixing zhuanhuan wei ASCII(b2a_hex) in binascii module
        data = list(np.frombuffer(x, np.float32))   # interpret a buffer as a 1-dimensional array
        dataarray.extend(data)
        # print "%3s" % temp.encode('hex'),
        index = index+1
    if index == 16:
        index = 0
        print
f.close()

注：
C 语言编程float型数据转化为2进制数输出–这个介绍的是一种计算转换方法

frombuffer()函数的做用是能够将上述生成的hex编码格式的字符串数据转为本身想要的数据类型，此处转化为浮点型，最终实现了二进制转为浮点型

矩阵合并：上下合并两种
http://www.cnblogs.com/catmelo/p/4292960.html

python encode和decode函数说明：常见编码方式gb2312，gbk，utf-8，
http://blog.csdn.net/moodytong/article/details/8136258

python 二进制文件读写显示：seek()，encode()，f.read(1)
http://blog.csdn.net/zfpnuc/article/details/4536309

生成随机数:random，normal，uniform等
https://www.52ml.net/4528.html

python binascii模块介绍：b2a_hex(),a2b_hex(),hexlify(),unhexlify()
http://www.2cto.com/kf/201208/145066.html