use function with user defined variable in GA

HI every one

I have a fuction which do some calculation on a very big matrix (42588x17)

this matrix came from an excel file which was imported by readmatrix

the fuction itself take less than 2 secound to run like this

FileContent=readmatrix("Export.xlsx")

function z=myfun(x,FileContent)

.

.

.

end

but if i include the readmatrix command inside it, it take upto 50 secound

function z=myfun(x)

FileContent=readmatrix("Export.xlsx")

.

.

end

now i want to run GA on this fuction for variable x but how can i do it without running readmatrix on each run

i tried global variable but it dosent work for me

Answer 1

[Star Strider]

I have no idea what the fitness funciton does, however if it uses data from the Excel file, read the file once and then pass the necessary variables to the fitness function as extra parameters. See the documentation on Passing Extra Parameters for details.

It is not considered good programming practice to use global variables in any event.

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