Appdesigner Importing Numerical Data via Notepad

I thought what I was trying to do was fairly simple, but I am still having issues. I will first explain what I am trying to do, and then I will show my current code. Followed by errors

All I wanted to do is import a textfile that has 1 row of 10 numbers.

Here is my code:

% Button pushed function: InputDataButton
        function InputDataButtonPushed(app, event)
            [filename, path] = uigetfile('*.txt');
            figure(app.UIFigure);
            T = readtable(filename);
            ct = T(:, 1);
            cr = T(:, 2);
            angle_sweep_chord = T(:,3);
            angle_cant = T(:,4);
            thick_fin = T(:,5);
            span = T(:,6);
            fin_location = T(:,7);
            fin_num = T(:,8);
            mass_fin = T(:,9);
            stage_fin = T(:,10);
            
            app.ctEditField.Value = ct;
            app.crEditField.Value = cr;
            app.angle_sweep_chordEditField.Value = angle_sweep_chord;
            app.angle_cantEditField.Value = angle_cant;
            app.thick_finEditField.Value = thick_fin;
            app.spanEditField.Value = span;
            app.fin_locationEditField.Value = fin_location;
            app.fin_numnEditField.Value = fin_num;
            app.mass_finEditField.Value = mass_fin;
            app.stage_finEditField.Value = stage_fin;
            

I am opening the file, setting T equal to the content of that file, and then setting each of my variables equal to a part of T.

For this line

cr = T(:, 2); 

Variable index exceeds table dimensions.

I also tried

cr = T.Var2(:, 2);

Dot indexing is not supported for variables of this type.

I cannot use str2double or table2array.

What can I try?

[Kojiro Saito]

It seems that readtable does not parse the text file properly. How does your file look like?

[Anna H.]

It looks like there is something wrong with readtable. Can you examine the value of T after:

T = readtable(filename);

How are the numbers separated from each other?

[I]

You're right. There is is something wrong with this. Here are the contents of the textfile:

0.09 0.45 45 0 0.006 0.242 4.67 4 0.89925 1

Answer 1

[Kojiro Saito]

After putting a breakpoint, it turns out that T is empty table.

readtable tries to read the txt file with comma delimeter.

So, you just need to add options 'Delimeter', 'space' in readtable.

[filename, path] = uigetfile('*.txt');
T = readtable(filename, 'Delimiter', 'space');
ct = T(:, 1);
cr = T(:, 2);

[I]

I still had an error with the bottom part of the code that I fixed with table2array. The numbers are reading in now, thanks for your help.