using same variable for two separate button to run and show the output

i try to use two buttons in appdesigner one for table and one for plot both using the same varaibles which was loaded from excel file how ever when i try to run it and press plot button i get error as shown in another picture even thou i used the properties function

and here is my code so far

properties (Access = private)

t % table to share

end

% Callbacks that handle component events

methods (Access = private)

% Code that executes after component creation

function startupFcn(app)

end

% Button pushed function: readdataButton

function readdataButtonPushed(app, event)

app.t = readtable (['Specimen_RawData_1.csv']);

var=app.t(10:end,1:2) ; %define your variables according to columns

var.Var1(1)=99;

d= (table2array(app.t(10:end,"Var1"))).*11

nr = array2table(d) ;% cell array

app.UITable.Data = [var(:,1:1:2) nr];

app.t.Properties.VariableNames{1} = 'time (s)';

app.t.Properties.VariableNames{2} = 'Extention';

app.UITable.ColumnName = app.t.Properties.VariableNames;

x = table2array(app.t(10:end,"time (s)"));

y = table2array(app.t(10:end,"Extention"));

plot(app.UIAxes,x,y);

end

% Button pushed function: plotButton

function plotButtonPushed(app, event)

x = table2array(t(10:end,"time (s)"));

y = table2array(t(10:end,"Extention"));

plot(app.UIAxes,x,y);

Answer 1

[Steven Lord]

There's no variable named t in the workspace of the plotButtonPushed function.

If you had used app.t in that code, that would refer to the t property of the app object.

By the way, you might want to spell your second variable name as "Extension" not "Extention". I would consider defining a Hidden private property with the variable names so you could refer to those properties in each method and not risk accidentally spelling the name differently in the methods.

[Shaghayegh Ghandali]

I see

Thank you so much