Put workspace data into menu and prompt someone to select it

Homework Question:

Prompt the user to select a day and a location based on the data provided. On the command window, output the day, location, and ice thickness [m] for that day. NOTE (avoid hardcoding): Your code should produce different results if the data for Ice changes. The options for the location or day chosen should change if the number of values in LocationID or Days changes.

load('MA2_data_2.mat');
days1= string(Days);
select_day1 = menu('Please select a day',days1(:));
ice1 = string(Ice);
select_loactionID = menu('Please select location',LocationID(:));

How do i get it to load ice based on the day and location chosen

Answer 1

[Image Analyst]

Capture their button number into a variable then use it somehow

load ('MA2_data.mat');
dayButton = menu('Please select a day',string(Days));
locationButton = menu('Please select a location',LocationID);
chosenDay = Days{dayButton};
chosenLocation = LocationID{locationButton};
Ice = 0; % whatever you do to get its value..................
fprintf('On Day %s, at location %s, the ice thickness was %0.4f [m]', chosenDay, chosenLocation,Ice)

[Alex Doan]

what does the {} do and i updated the question

[Image Analyst]

It takes the contents of the cell array, returning a string. Using () would return a cell, which is not what you want. See the FAQ What is a cell array

Write back if you still need help.

[Alex Doan]

This is the error that shows up when i use use the code, i can choose the day and location so that part is good

[Image Analyst]

Sorry - it was untested because I had not taken the time to download the mat file, but since you seem to have found a problem, I did. But I'm sure you're a smart enough engineer to have already made the corrections, but here they are anyway:

s = load ('MA2_data.mat')
Days = s.Days
Ice = s.Ice
LocationID = s.LocationID
dayButton = menu('Please select a day', string(Days));
locationButton = menu('Please select a location', LocationID);
chosenDay = Days(dayButton)
chosenLocation = LocationID{locationButton}
chosenIce = Ice(dayButton, locationButton)
fprintf('On Day %d, at Location %s, the ice thickness was %0.4f meters.\n', chosenDay, chosenLocation, chosenIce)

[Alex Doan]

Ty lol and it's my 1st year learning matlab so I'm not that smart ?

[Image Analyst]

No problem, but make sure you read that link about cell arrays. It will give you a good intuitive idea of how to work with them. Also, can you Accept the answer if we're done here? Thanks in advance.