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Geoff Hayes


Last seen: Today
3,026 total contributions since 2014

Professional Interests: Software Engineering, Target Tracking, Video Streaming apps

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Contributions in
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Answered
Errors in Simulated Annealing (simulannealbnd) algorithm.
Giuseppe - the error message is telling you that the code in your ForexFun is NOT using positive integers or logical values when...

1 day ago | 1

Answered
The function sqlread isn't working
cief - according to the sqlread documentation, this function was introduced in R2018a. It seems that you will need to upgrade fr...

1 day ago | 1

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function inside main program
Chrys - in your function, you are referencing the variable X but it isn't been defined either within that function or passed in ...

1 day ago | 0

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plotting a multiple output function
Moussa - rather than trying to calculate and plot the results of the myrct in one like like plot(myrct(t,f,beta)) split this i...

1 day ago | 0

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How can I create the slider in my data range and how can my slider auto scroll until my data ends in app designer?
Özge - I think that all you need to do is to change the slider limits so that you can change the mininmum value (0) and the maxi...

2 days ago | 0

Answered
Nested For Loop; Combine Two for loops
Elizabeth - perhaps you can combine the two as follows sigmasub_val = 0.1:0.1:3; outputData = zeros(length(sigmasub_val), 2); ...

5 days ago | 0

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Input and Output GUI using Guide
Dina - when you create a variable like m within your callback function, it is local variable to that function and is not accessi...

5 days ago | 0

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Answered
Saving struct to excel
Deepa - you can use fieldnames to return a cell array of the field names for your structure. You can then iterate over each name...

7 days ago | 0

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Answered
Please find the error
vidushi - the problem is with this line total=[total,sum(v(ii):v(jj))]; and in particular the inputs to the sum function. Her...

7 days ago | 0

Answered
square gridlines in the figure
Ugur - it could be that your axes do not have the same data unit lengths. Try using axis equal to ensure the same spacing on e...

7 days ago | 0

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Answered
Graph handles in loops
Michael - since you have already created the handles with the code for j = 1:numObjects handles(j) = plot(stuff(1)); end ...

7 days ago | 0

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Answered
i did this but cant sure about my howemork question 2. can anyone help me?
Emre - the question is asking you to write a function called threshold that determines the number of terms required for the sum ...

8 days ago | 0

Answered
After i generate random numbers of x, how can i use this random x values to the rest of the code one by one. Because after that, I want to plot a friction factor-x number grapt with this different numbers
isilay - since x is an array then you can use element-wise power to calculate the friction factor. Just change your line of code...

8 days ago | 1

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Answered
how to write if statement for matrix ?
Ibrahim - what are you trying to do here? Just display (with disp) a message depending upon whether an element is a zero or not?...

10 days ago | 0

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How to take values from a matlab file
Max-Henri - since you are loading a mat file, perhaps you can use load instead. Something like [filename, pathname] = uigetfile...

11 days ago | 0

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HOW TO MAKİNG PASCAL TRİANGLE !!!
emre - your code needs a third loop to countdown from the middle number to 1. Just add the following code after the second loop ...

11 days ago | 0

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Answered
slider for march chart
Lev - why in your SliderValueChanged callback are you overwriting the Slider with its value? I suggest that you remove this func...

11 days ago | 1

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Answered
Update app designer field in external function
Koen - it looks like your sim_cooling_GUI is a function (since you are passing in the app.GUI_Settings so why not just pass in t...

12 days ago | 0

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Error: Index exceeds the number of array elements(1)
Tatiana - the problem is that a is initialized as a scalar but it is treated as an array at the line A= [A, x, a(x), b(x), z]; ...

12 days ago | 0

Answered
How to access a certain line or box in powerpoint via Matlab ?
farzad - from mlreportgen.ppt.Paragraph class, paragraphObj = Paragraph(text) creates a paragraph that contains a mlreportgen....

12 days ago | 1

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Answered
How to create undo and redo buttons in GUI that can be pressed multiple times?
John - without seeing your code, we can't determine why it is allowing you to undo and redo only once. You mention that you have...

12 days ago | 1

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Answered
plot a fitted curve and specified axes
Wave - from plot cfit or sfit object, try doing plot(fitdata, 'Parent', hAxes) where hAxes is the handle to your axes.

12 days ago | 0

Answered
I can't choose just names!
Depressive Mood - since this his homework, we can only give out hints. You need to extract the name from between the two asteris...

12 days ago | 0

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Answered
Reference to non-existent field 'image'. Error in Untitled2 (line 10) a80 = double(x1_image.image); -----Need help
Aris - what make you think that image is a valid field for x1_image? In your example, you save the A variable to the 80s.mat fil...

13 days ago | 0

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Answered
Error in XLS Read
Shady - perhaps you need to supply the path to the file? Is the file in the MATLAB search path? Consider using uigetfile so that...

13 days ago | 0

Answered
How to create a vector with for loop?
Hamzah - on each subsequent iteration of your loop, you are overwriting the data from the previous iteration since you are setti...

13 days ago | 0

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Answered
How can I put the results from a while loop in a matrix?
Kaicheng - you probably can remove the line syms x y since I can't see the y being used in the code, and the x is overridden b...

13 days ago | 1

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Answered
I want to repeat this code 32 times and each time stores the result to get matrix 1*32
Osama - presumably you want to store the counter value from each of the 32 iterations so you could do something like n = 32; c...

13 days ago | 0

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Answered
Legend with a variable in it
Zhen - from legend properties you need to set the Interpreter property to none to display literal characters. Try doing Name = ...

14 days ago | 0

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Answered
help with my home work plzzzz
Bader - look closely at the line for i=1;r; You have a semi-colon between the 1 and the r. Replace with a colon and it will wo...

14 days ago | 0

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