This page is intended to be a place to collect wisdom about the differences mostly for the purpose of helping proficient matlab users become proficient numpy and scipy users.
Scipy io matlab.
Dictionary in which to insert matfile variables.
Scipy io savemat scipy io savemat file name mdict appendmat true format 5 long field names false do compression false oned as row source save a dictionary of names and arrays into a matlab style mat file.
We recommend using an user install sending the user flag to pip.
Input and output scipy io scipy has many modules classes and functions available to read data from and write data to a variety of file formats.
Any matlab object can be a value of a field.
Because the repository keeps previous.
By default scipy reads matlab structs as structured numpy arrays where the dtype fields are of type object and the names correspond to the matlab struct field names.
This can be disabled by setting the optional argument struct as record false.
If we want to inspect the contents of a matlab file without reading the data into memory use the whosmat command as shown below.
Numpy and scipy were created to do numerical and scientific computing in the most natural way with python not to be matlab clones.
Working with matlab arrays.
We know that numpy provides us with methods to persist the data in readable formats for python.
Preferably do not use sudo pip as this combination can cause problems.
As for all objects in matlab structs are in fact arrays of structs where a single struct is an array of shape 1 1.
Pip accesses the python package index pypi which stores almost 200 000 projects and all previous releases of said projects.
We can see the array along with the meta information.
Import scipy io as sio mat file content sio whosmat array mat print mat file content the above program will generate the following output.
Can also pass open file like object.
Scipy provides us with the module scipy io which has functions for working with matlab arrays.
But scipy provides us with interoperability with matlab as well.
This saves the array objects in the given dictionary to a matlab style mat file.
Scipy io loadmat scipy io loadmat file name mdict none appendmat true kwargs source load matlab file.
Name of the mat file do not need mat extension if appendmat true.
Matlab structs matlab structs are a little bit like python dicts except the field names must be strings.