There is no MATLAB toolbox that allows you to apply FUZZY TOPSIS to excel files.
There are only a small number of routines that will deal with excel files directly (besides routines to read and write excel files.) For example it is possible to create data stores directly from xls files... but it is not possible to (for example) directly compute the sum of all of the entries in an xls file.
The key to working with excel files is to first read the data in, and then as a seperate independent step, process the data.
The key ways to read excel files are readtable() and readmatrix() (and the older xlsread())
Once you have read in the data, you run into the problem that MATLAB has no FUZZY TOPSIS available. However, https://github.com/simoG265/FuzzyTopsis has FUZZY TOPSIS matlab code.
