For option %1, use GUIDE or uicontrol.
For option #2:
% Have user browse for a file, from a specified "starting folder."
% For convenience in browsing, set a starting folder from which to browse.
startingFolder ='C:\Program Files\MATLAB';
if~exist(startingFolder,'dir')
% If that folder doesn't exist, just start in the current folder.
startingFolder = pwd;
end
% Get the name of the file that the user wants to use.
defaultFileName = fullfile(startingFolder,'*.*');
[baseFileName, folder] = uigetfile(defaultFileName,'Select a file');
ifbaseFileName == 0
% User clicked the Cancel button.
return;
end
fullFileName = fullfile(folder, baseFileName)
Then use dlmread, csvread, fgetl, or textscan to read in the numbers from the file.
