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# Ajay Kumar

##### Last seen: Today
71 total contributions since 2019

Student.
MATLAB enthusiast.

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How to solve a matrix quadratic equation?
Kminusw2 = K - w^2; mymatrix = Kminusw2.*M; myfinalanswer = det(mymatrix);

3 Tage ago | 0

Plotting in App designer
x = 1:10; y = sin(x); plot(app.UIAxes,x,y);

4 Tage ago | 0

Adding a second x-axis to the top
https://uk.mathworks.com/help/matlab/creating_plots/graph-with-multiple-x-axes-and-y-axes.html

7 Tage ago | 0

Previous Value of Numeric Edit Field
Try to save the Previous value in a temporary variable. For eg: temp = app.NumericEditField.Value; if error app.NumericE...

7 Tage ago | 0

How to stop the program if an array is empty?
Handle the exception using try catch blocks signal1 = [1,2,3,4,5,6]; signal2 = [7,8,9,10,11,12]; signal3 = [13,14,15,16,17,1...

12 Tage ago | 0

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save data in for loops
Yes, You are trying to assign 2 matrices of different size. Try this: coordinate= zeros(41,1); for a=1:21 X = snakes{1,a}...

12 Tage ago | 0

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figure doesn't appear in new window
Are you sure? because Figure 2 window lies exactly on Figure 1 window. Just check the matlab windows. If you want to shift the ...

13 Tage ago | 0

How to say remove "-1" from the end of a string if exists?
play with positions. For eg: S = 'sectioned-1'; S = S(1:end-2) For an array, write this in a simple for loop.

25 Tage ago | 0

Inserting a row and moving other rows down
A = [A(1,:);[1,1,1,1];A(2,:);A(3,:)]

25 Tage ago | 1

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How to modify the text visibility in a Gui that created using App Designer
What is the exact name of the component? I would suggest you to rename it if its only Label. For example, if you rename it to C...

etwa ein Monat ago | 0

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matlab app designer ,UI axes how to disable XTick label ?
I think you want to disable Xlabel String. Search for Xlabel.String property in the property window and also make that empty.

etwa ein Monat ago | 0

The plot is exceeding the boundaries of the box in a figure.
Did you turn off the Clipping ? Try this after plot: ax = gca; % get the current axis ax.Clipping = 'on'; %...

etwa ein Monat ago | 0

In the ButtonPushed callback, you can directly assign the values of dropdown menu. For eg: Dropdown.Value = "Your Option in dro...

etwa ein Monat ago | 0

How can I change the value of some elements within a matrix
B =[0, 3, 6]; C= 1./B; C(isinf(C))=0

etwa ein Monat ago | 0

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Generation of plot using data set
T = xlsread('process.xlsx'); names = {'Memory'; 'Battery Backup'; 'Processing Capability'; 'Screen Size'; 'Camera'}; for i = 1...

etwa 2 Monate ago | 0

how to install matlab on windows 10
If you are a student, then see if your university/college has a Campus-Wide Access. For checking go to: https://uk.mathworks.com...

etwa 2 Monate ago | 0

How can I implement code online?
You can use MATLAB compiler to make your GUI/App as a standalone application or web application. Please read: https://uk.mathw...

etwa 2 Monate ago | 0

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Drag and drop images
You can use the axes component. doc uiaxes and in the startup function you could write something like this: imshow('yourpictu...

etwa 2 Monate ago | 0

writing a callback in a gui
You can use 3 editfields (2 for x and y inputs and 1 for displaying the output) and 3 buttons (NOT, OR, AND) and you can write c...

etwa 2 Monate ago | 0

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does anyone know how we enter data manually into "uitable"?
One option could be writing callback to button(Enter data) wherein we use inputdlg to get the user inputs for all values and ass...

etwa 2 Monate ago | 0

How do i assign value of a sub-cell element to a variable
{sum([7,6,4,8,7,9,1,12]), sum([9,6]), 31} Is this what you wanted?

3 Monate ago | 0

Matlab App Designer Array
doc inputdlg for eg, to get the number of inputs: prompt = {'Enter number of inputs:'}; dlgtitle = 'Input'; dims = [1 35]; ...

3 Monate ago | 2

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MATLAB app designer : .exe file extremly slow when opening and calculating
I would suggest you to break the 5000 lines of code in app designer code view to multiple function files (.m) files. As executi...

3 Monate ago | 0

3 Monate ago | 0

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Uigetfile will make app be behind another windows.
add these lines after uigetfile drawnow; figure(app.UIFigure) assuming your UIFigure's name is app.UIFigure

3 Monate ago | 0

Rename file with editfield(App designer)
You can do this. Suppose you entered 'oldname' in text editfield. i.e. your_editfield.Value = 'oldname'; now save the file usi...

3 Monate ago | 0

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Callback function on window focus?
f = figure; drawnow figure(f);

3 Monate ago | 0

Storing data in cell array using for loop
You are creating a new cell array everytime n is incrementing, which leads to loss of previous data. so, create the cell array o...

3 Monate ago | 2

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App Designer uitextarea control gives position values not in pixels when window is maximised?
When I do this: fig = uifigure; txa = uitextarea(fig); txa.position I get the Output as 100 100 150 60 which are pixels.

3 Monate ago | 1

| accepted