MATLAB: Editing a string using GUI editable text/popup within guide

guiMATLABuser input

I have a string, where I use strrep to replace a variable witha user input:

string = ('Today, I ate some (x)')
user_input = input('Enter your food: ', 's');
newstring = strrep('string', '(x)', user_input);

I want to use an editable textbox to get user_input. How would I do that?

My full script will have 3 editable textboxes, and 2 popups.

the popups will be changing a directory path, like I do here with sprintf:

user_input_food = input('enter food: ');
user_input_amount = input('enter amount: ');
root = 'C:\Users\Administrator';
% full path should look like C:\Users\Administrator\food\amount\food_amount.txt
filepath = fullfile(root, sprintf('food%s', user_input_food,), user_input_amount, sprintf('food%s_amount%s.txt', user_input_food, user_input_amount);

how do I get a popup menu to populate the user_input_experiment/user_input_squad variables?

Best Answer

user_input_food = handles.food_textbox.String;        %assuming you named the edit uicontrol food_textbox
user_input_amount = handles.amount_textbox.String;
filepath = fullfile(root, sprintf('food%s', user_input_food), user_input_amount, sprintf('food%s_amount%s.txt', user_input_food, user_input_amount));

how do I get a popup menu to populate the user_input_experiment/user_input_squad variables?

If it is to be done according to computed content, then set the String property of the popup to a cell array of character vectors, one per line. Access the Value property to determine the index of which was selected. If you want to know the selected text, then for example,

experiment_choices = handles.experiment_popup.String;
user_choice = handles.experiment_popup.Value;
user_input_experiment = experiment_choices{user_choice};

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First. you shouldn't be using addpath just to be able to load some data. addpath is intended to make code files visible, not data files. All the import functions can load data from any folder regardless of whether or not they're on the path. It's much better to pass the full path of the file to the the import function. With addpath you may end up importing a file with the same name but in a different folder than what you intended.

Secondly, why do assume that matlab is going to somehow guess that in the char vector 'EXP(user_input_exp)_SQ(user_input_squad)_Template.txt' it's supposed to replace the user_input_exp part by the variable of the same name, but not replace the Temp part by the value of a variable called Temp or even the a of Template by the value of a variable called a? Matlab doesn't yet have a mind reading toolbox, if you want to insert something from a variable into some text you have to tell it explicitly with functions such as sprintf, compose or by string concatenation and things like num2str.

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Best Answer

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