Geoff Hayes

Last seen: 1 day ago

3,097 total contributions since 2014

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

Geoff Hayes's Badges

Answered
Can't Stop program
ziv - I think the problem is that you are getting stuck in a loop between two functions: DrawBoard and GamePlay. DrawBoard calls...

3 days ago | 0

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bsxfun - @minus - how to divide by maximum
Ko - if you want to divide by the maximum of a, couldn't you just do out = abs(bsxfun(@minus,a,b')./max(a)) ?

26 days ago | 0

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how store multi image in on file ?
Rana - consider writing the images to a single tif file. Please see the example at Write Multiple Images to TIFF File.

26 days ago | 0

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creating new variable using for loop and if-else condition
Arturo - look closely at your conditions if age(n)==10 & age(n)<=29 The above would mean that nth element of the age array is ...

1 month ago | 1

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Converting a String to Double without str2double
Sanjin - why do you need to convert it using str2double? check=z(k); In the above check is a character so you could compare it...

1 month ago | 1

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Plotting for a range of values
Verdan - in your code, the mB and a are scalars whereas you want them to be arrays (for when you plot outside of the loop). Try ...

1 month ago | 1

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Index exceeds the number of array elements (1)
The error is here k1=p(x1_rec(i),y1_rec(i),x2_rec(i),y2_rec(i)); l1=q(x1_rec(i),y1_rec(i),x2_rec(i),y2_rec(i)); where...

2 months ago | 0

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Fix axis on plot
Benjamin - I'm not entirely sure this is what you want, but I think that you need to find the minimum and maximum across all x a...

2 months ago | 0

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I'm keep having an error 'Not enough input arguments' for this code
Muhammed - from the function signature function [y] = DivisibleTest(M) when calling this function, you need to provide an inpu...

2 months ago | 0

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Can't reach line object from callback function - 'Invalid or deleted object.'
Fredrik - I suspect the problem is here guiobj.chkbox(k) = uicontrol('Parent',guiobj.f,'Style','checkbox','String',Names(k),...

2 months ago | 0

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For - While loop output and extracting the value of computed rows from a column
Christopher - look closely at this code for qq = [1:5] while cumulative_sum <= C cumulative_sum = cumulative_sum ...

2 months ago | 1

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confusion while; break; continue.
Blazhe - I think the condition on your while loop is preventing you from entering the body (of the loop) and so preventing the c...

2 months ago | 0

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In a 'for loop' not getting difference of two consecutive iteration
feeroz - you never update your x, y, and z after their initialization, so perhaps you are intending to use X_i instead. Try the ...

2 months ago | 0

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Answered
How do I use function for a function which has a matrix with variable index?
Fidele - since your function signature is function [a,b,c] = trial_function(num) then you need to assign values to each of th...

2 months ago | 0

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Calling a function in bisect.m
Rashi - try removing (in the hw7p2.m file) the @ in front of the function handle that you are passing into the bisect function....

2 months ago | 0

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Animating a pendulum: error in code
In order to convert to a series of frames and save as an AVI, just do % open the video writer v = VideoWriter('pendulum.avi');...

2 months ago | 0

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Creating GUI for .m configuration file
Muhammed - is your m file a function or a script? How many parameters do you have? It may be easier to use an inputdlg to gather...

2 months ago | 0

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How to save wave file with arbitrary name right after recording is finished.
Dao - perhaps you want to try something like [newfile,newpath] = uiputfile('my_new_name.wav','save file name'); if isstring(ne...

2 months ago | 0

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missing/incorrect use of math operators?
Jocelyn - why should the time of flight value be increasing in value? Is it because it is dependent upon the previous value? Do ...

2 months ago | 0

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How to get answers in a matrix form
Houman - if we assume that the result of trapz is a scalar, then you could do something like trapzResults = zeros(size(yval,2),...

2 months ago | 1

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Editing Text Strings through Looping
James - you could use sprintf to create your url with the "code" for code = [587 612 876 296 137 635 591] url = sprintf('h...

2 months ago | 0

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How to Plot on UI Axes with app designer?
Cameron - from hold, try replacing your line of code hold on; with hold(app.UIAxes, 'on'); where you specify which axes you ...

2 months ago | 2

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Format long error in function
ahmed - consider using fprintf and specifiying the number of integers to the right of the decimal point that you are interested....

2 months ago | 0

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Running three different cases in my function and plotting three graphs on one plot (figure)
Asaf - try using hold to retain the current plot when adding new plots. For example, x = -2*pi:0.01:2*pi; plot(x, sin(x)); ...

3 months ago | 0

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Answered
If I have a string with both numbers and letter in it, how would I get the value at a column, and if it is a number convert it to not a string?
Jared - perhaps I'm misunderstanding, but if you have a comma-delimited string, you can split on it and then use str2double to c...

3 months ago | 0

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Redrawing an image in a UIAxes that has already been drawn
Hi Jason - from image created by imshow, the app.myData is an image object which (from the tests I did) may no longer be valid d...

3 months ago | 0

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Answered
Removing the max and min of a vector without removing multiple minimums or maximums
Logan - from max value and indices you can get the index to the maximum (or minimum) value and then use that index to remove the...

4 months ago | 0

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Using the euler method
Kelsey - there are a couple of coding mistakes with the above. Before the code can execute, there is an error Invalid expressi...

4 months ago | 0

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How do I convert a DataMatrix back to a normal matrix?
Emil - see Convert DataMatrix object to double-precision array for details on the conversion.

4 months ago | 0

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math question error with the format
Dena - I suspect the error is due to the use of exp where you are not providing any inputs to this function. The code should pro...

5 months ago | 0