Concatenate Multiple Mat Files

We often encounter situations where we have data in multiple files at different frequencies and on different subsets of observations but we would like to match them to one another as completely and systematically as possible.

Concatenate multiple mat files.

I would like to import and combine the contents of 20 mat files 4 columns per file all cells are ints from the same folder into one long data array so that i can analyze each of the four columns by row line by line. The wiki examples show how to import multiple jpeg and text files and the video on here how to import files programmatically uses excel files as an example but nothing. In r the merge command is a great way to match two data frames together. Thank you 4 comments.

A mat file doesn t contain columns but variables. Show hide 1 older comment. Stephen cobeldick on 13 apr 2017 hi i m running a script currently that analyses multiple c3d files and outputs al the variables im interested in as a single array 1 row x n columns. I need to concatenate all same variables in all mat files in order to have just one mat file.

If you mean your two mat files contains a variable d for example that is nx89 then you need to load your two variables from your two mat files a1 load file1 mat. For example mat file 1 contains a 1 2 3 4 and mat file 2 contains a 6 7 8 9. Learn more about mat files file combine matlab. The size of a mat file is not exactly correlated to the size of the included data because mat files can be compressed and they have a header.

How do i combine multiple mat files into a single matrix. I have two mat files to extract features one for edge and one for surf and i want to concatenate these two mat file and generate new mat file i want to save each edge and surf features for the same image in a row how can i do that. Follow 125 views last 30 days sean byrne on 12 apr 2017. All mat files have the same content but the size of each variable in each mat file is different.