while working in GUI, I wanna create txt file which include a numeric matrix(a) but I want that user could choose directory and file name when user wants to save.

for example, a=[1,02 2,54 3,8 ;4,5 5,5 6,7 ;7,7 8,7 9,1]

when user press the button in GUI I wanna open a window to allow users to choose file name and directory to creating a txt file for the matrix a. Also I wanna see the numbers without "e-notation".

[Matt Kindig]

For the choose filename/directory, use uiputfile()

doc uiputfile

You can adjust the printing of decimals (including the "e-notation" by changing the precision in your dlmwrite() call.

doc dlmwrite