将mat文件以不同的数值数据格式保存在scipy.io.savemat中 [英] Saving mat files in different numerical data formats in scipy.io.savemat

问题描述

我知道这很简单，我不敢相信我在任何地方都没有找到任何东西，但是它真的来了

I know this is very simple and I can't believe I haven't found anything on this anywhere but here it goes:

我在python中有一个大型的高维矩阵，我想以.mat格式保存(适用于Matlab). 我正在使用scipy.io.savemat方法保存此矩阵，但始终将其保存为double.我想将其保存为较低精度的内容，例如单精度或16位浮点数.

I have a large, high dimensional matrix in python that I want to save in .mat format (for matlab). I'm using the scipy.io.savemat method to save this matrix but it's always saved as double. I would like to save it as something of lower precision, like single or 16 bit float.

我在保存之前将数组转换为低精度数据类型，但始终将其保存为double.真的没有办法将Mat文件保存为较低精度的float类型吗?

I convert the array to a low-precision data type before saving but it's always saved as double. Is there really no way of saving mat files in a lower-precision float type?

.savemat似乎没有dtype参数.

.savemat does not seem to take a dtype argument.

 import scipy as sp
 sp.io.savemat('test.mat', {'test': sp.array([0.001, 1, 1.004], dtype='Float16')})

推荐答案

显然，它必须是一个或两个. scipy.io.savemat()不支持其他浮点精度，如果它不喜欢您的dtype而没有警告，它将随意默认为double.

Apparently it needs to be either single or double. scipy.io.savemat() does not support other float precisions and it'll casually default to double if it doesn't like your dtype without warning.

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