How to read variables of .mat in Julia?

New to Julia
,
1

I have installed MAT.jl package to read variables from .mat file.

When I use the following syntax. I got the error. How to resolve it?

using MAT

file = matopen("subject3455session6.mat")

read(file, "varname")
close(file)

Info: Precompiling MAT [23992714-dd62-5051-b70f-ba57cb901cac]
└ @ Base loading.jl:1260
WARNING: could not import HDF5.exists into MAT
File “subject3455session6.mat” does not exist and create was not specified

Stacktrace:
[1] error(::String) at ./error.jl:33
[2] matopen(::String, ::Bool, ::Bool, ::Bool, ::Bool, ::Bool, ::Bool) at /home/rakesh/.julia/packages/MAT/wBZA8/src/MAT.jl:44
[3] matopen(::String, ::String; compress::Bool) at /home/rakesh/.julia/packages/MAT/wBZA8/src/MAT.jl:88
[4] matopen at /home/rakesh/.julia/packages/MAT/wBZA8/src/MAT.jl:88 [inlined]
[5] #matopen#2 at /home/rakesh/.julia/packages/MAT/wBZA8/src/MAT.jl:97 [inlined]
[6] matopen(::String) at /home/rakesh/.julia/packages/MAT/wBZA8/src/MAT.jl:97
[7] top-level scope at In[1]:2nd_place_medal:

2

I think Julia’s current directory might be in the wrong location? Try running pwd() to see if that file path contains “subject3455session6.mat”.

3

Thanks for your response!

Sorry for the late reply. Your suggestion works but I am stuck in ploting the variables in .mat files. There are two different types of variables in the file , struct and cell arrays.

Could you help to know the syntax to plot these variables?

4

It’s very difficult to give a “one size fits all” answer, because structs and cell arrays are very general data types. If, for instance, each cell in the cell array contains a number, it would be appropriate to import it as or convert it to an Array{Float64}.

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