Python读写mat文件操作指南(使用scipy.io)

clear
path = 'D:\temp\mydata.mat';  % 用于存放mat文件的路径
n = 12;  % 数
s = 'Hello';  % 字符串
A = [1,2,3,4,5; 6,7,8,9,0];  % 数组
C = {'str1','str2','str3'; 'str4','str5','str6'};  % 元胞数组
save(path, 'n', 's', 'A', 'C');  % 保存上述变量

from scipy.io import loadmat
 
path = r"D:\temp\mydata.mat"  # mat文件路径
data = loadmat(path)  # 读取mat文件
print(data.keys())  # 查看mat文件中包含的变量
 
Out:
dict_keys(['__header__', '__version__', '__globals__', 'A', 'C', 'n', 's'])

from scipy.io import loadmat
 
path = r"D:\temp\mydata.mat"  # mat文件路径
data = loadmat(path)
n = data['n']  # 数
s = data['s']  # 字符串
A = data['A']  # 数组
C = data['C']  # 元胞数组
 
print(n)
print(s)
print(A)
print(C)

In:
n0 = n[0][0]  # 读取单个数
s0 = s[0]  #读取字符串
A0 = A[0][2]  # 读取数组中第1行第3个元素
C0 = C[0][1][0]  # 读取元胞数组中第1行第2个元素
print(n0)
print(s0)
print(A0)
print(C0)
Out:
12
Hello
3
str2

from numpy import array
from scipy.io import savemat
 
# 创建变量
path = r"D:\temp\mydata02.mat"  # 路径
num = 12  #  数
str = 'abcde'  # 字符串
list = array([1,2,3,4,5])  # 数组
 
# 构造字典，用于保存变量
data = {}
data.update({'num':num})
data.update({'str':str})
data.update({'list':list})
 
# 保存变量到mat文件
savemat(path, data)