Geoff Hayes
Professional Interests: Software Engineering, Target Tracking, Video Streaming apps
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MATLAB Central Treasure Hunt finisher badge
Awarded to Geoff Hayes on 08 Dec 2020
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Awarded to Geoff Hayes on 20 Jul 2017
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Content Feed
Constants not recognized in integral
@Florian Spicher - rather than using a script, try including the above code in a function instead (see functions vs scripts fun...
23 hours ago | 0
Hello everyone, In the following code, I am trying to record V values in the matrix V_mat not just the last value. Please help me how can I do it.
@Mohammad Dawoodzada - initialize the matrix outside of your loops (rather than on each iteration of the inner loop) and keep tr...
5 days ago | 0
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How to nest callback into while loop?
@Sergey Lopatnikov - the _'event_data' in callback function is not recognized_ error message makes sense since you are trying to...
5 days ago | 1
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Understand a command line to create a matrix
@Mark Sc - this is an interesting piece of code. Given that >> x = (1:npoint) x = 1 2 3 4 5 and tha...
10 days ago | 0
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How to turn a matrix into a vector without using for loop !
@daniel adams - try using reshape.
10 days ago | 1
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gui executing input parameter
@AStro you may need to post more code as it isn't clear what you might do with the data you read. But whatever it is, you can sa...
10 days ago | 1
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The while loop for my taylor expansion will not check the condition for each iteration.
@Zachary Nies - I don't think your MAXerror ever gets below the condition. When I run your code, the minimum value assigned to i...
12 days ago | 0
How can I call a directory that has a partially variable name (variable in the middle), that precedes a variable filename?
@nailah oliver - consider using dir to get a list of files that match your pattern. The result will be an array of structs that ...
12 days ago | 0
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How do I read out a specific string/value out of one excel cell
@Benedikt Friedl - take the cell data which is the comma-separated string and then use split to split the string at the commas: ...
13 days ago | 0
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How to handle radiobutton in radiobutton group panel...
Tyann - I think the assignments in each radio button callback is incorrect pilih = 3; pilih = handles.pilih; guidata(hObject...
17 days ago | 0
Put structure data into GUIDE table
Douglas - perhaps you need to convert the struct to a table before setting the uitable. Try using struct2table to see if that he...
19 days ago | 0
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Error-check spacing of a vector
Zheng - you are trying to compare two floating point numbers using (in this case) the inequality operand. When comparing two flo...
19 days ago | 0
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Error : In an assignment A(:) = B, the number of elements in A and B must be the same, used in homework equation. Please help me figure out how to solve.
Kristin - you may be overconplicating it. You say that My thought is that m = is a fine vector, because it isn't a built-in func...
19 days ago | 0
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given a circle plot all possible tangents
Sparsh - the code from https://www.mathworks.com/matlabcentral/answers/258780-how-to-plot-tangent-line-from-specified-point-to-a...
20 days ago | 0
How to create a MATLAB code for generating audio sine wave signal of frequency ranges from 1Hz to 15kHz and plot it on real time.
Zafar - see the relevant parts of the noisy signal example on how to generate a sine wave with a particular frequency. You will ...
20 days ago | 0
Euler's method
Paul (Adam?) - I think all that you are missing is in your assignment y_values(:,i1)= y_values(i1) + dt * myode(t_values(i1),y_...
25 days ago | 0
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is it possible to know if an alert dialog box has opened in app designer app?(testing purposes)
Michaela - if your code launches the alert dialog, then you should be able to know that it has launched and so can "skip the ite...
25 days ago | 0
Possible error with dot product
William - from dot, this function returns the scalar dot product of the two input vectors. So in your case, the dot(xa+ya,xb+y...
25 days ago | 1
Push the left or right button in the mouse after generating a sound
mohadeseh - one way (and there may be another) is to create a figure and have that figure capture the mouse button events (assum...
26 days ago | 0
graph not displaying with UIaxes
Shu-An - when I run your code, I see the following error Error using ^ (line 51) Incorrect dimensions for raising a matrix t...
27 days ago | 0
Convert UIDatePicker to Default
shnrndll - try setting to the default value of NaT (from Value) as myDatePicker.Value = NaT; where myDatePicker is the uidatep...
27 days ago | 0
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Calling specific .wav files in nested subfolders
Brian - if you know the path to the file that you want to read, then include that path along with the filename in the code to re...
1 month ago | 0
Error when plot loaded .mat file in app designer
Aron - I suggest you use the MATLAB debugger to step through the code and see what the variables w_grad = load('w_gradiens_lotk...
4 months ago | 0
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How do i call the recorded audio into another push button and compress it in GUI.
Muhammad - you can either extract the data from the plot (from handles.axes1) or just save the recorded data to the handles obje...
4 months ago | 1
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How can I use the iteration to store variables? It gives error Subscript indices must either be real positive integers or logicals.
Shivanshu - presumably the error is with for i=1:itt options=odeset('RelTol',1e-3,'AbsTol',1e-6); [t,x]=ode23(@...
4 months ago | 0
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How to make a sum series using a for loop
Petch - in your code, you are assigning the kth iteration value (plus x) to s rather than summing all values. Try instead s = x...
4 months ago | 0
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creating a .txt file with values that the user inputs in Matlab app designer
Joseph - if your app has a text field that allows the user to enter the name of the file to save to, then you could do something...
4 months ago | 0
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Cutting up image into smaller blocks - how to name resulting blocks according to grid pattern?
David - ca seems to represent your cell array of blocks. The code you have (already) to write the blocks is for K = 1 : numel(c...
4 months ago | 1
Unable to image files automatically with different file names
Warid - the code error message Error in ngui>pushbutton2_Callback (line 167) imwrite(seg, filename); does not correspond exa...
4 months ago | 0
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CAN'T USE THE FUNCTION watershed in matlab for image segmentation??
Arun - is watershed a function or a script? In this case, I suspect that it is a script and does ot have a function signature. W...
5 months ago | 0
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