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Thiago Henrique Gomes Lobato


Last seen: 1 day ago
179 total contributions since 2019

Thiago Henrique Gomes Lobato's Badges

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  • Knowledgeable Level 3
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Answered
Group array in a cell according to their size
A direct implementation could be done like this: A={[1 2 3 4] [4 5 6 9] [1 2 3] [7 8 9] [1 2] [3 4]}; sizes= []; for idx=1:...

23 hours ago | 1

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Answered
How to fit one variable data into multiple ode equations
What you mean by y(1)? That you have data only for the first variable y1? Your equations seem to be coupled, so if you optimize ...

1 day ago | 0

Answered
How write these equation in Matlab for optimization
First you don't need the variable w, your problem is to maximize corr(Q,S), which is a unconstrained problem in x. Second, by yo...

1 day ago | 0

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Answered
Evaluate Function at different data points from vectors
Use meshgrid to generate all combinations and make your function accept vector entries. Ex: f = @(x,y,z)x.*y+z; % Insert your ...

8 days ago | 0

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Answered
Fit two peak model
You can estimate a continious function from your data using ksdensity and then fit two gaussians on it. My answer for the follow...

8 days ago | 2

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Answered
Work with signals, frequency spectrum and frequency domain
This version of your code should do what you expect. After the loop I wrote an example of how to go to the frequency domain %% ...

15 days ago | 2

Answered
How can I stop fminsearch in one iteration after a specific time?
If when you say stop you mean it simply freezes and you don't get an error nor the iteration goes on than you probably have some...

15 days ago | 0

Answered
i wan to generate the random number between two number with condition
If your second column has values equal to 40% of the first, then they are not random. You can vectorize this in the following fo...

15 days ago | 1

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Answered
How to determine the value of a matrix?
What you have is an integer matrix factorization problem, which is a rather complex topic. Main points that you have to take in ...

22 days ago | 0

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Answered
matlab code for musical note recognition based on frequency
To really undestand the method, first try to define how exactly you gonna get the frequencies. Your main steps are : Define you...

22 days ago | 0

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Answered
Converting Cartesian Coordinates to Binary image
This is an general example you could use: Cartesian = [ 10,1; 15,10]; imSize=20; binaryImage= false(imSize)...

22 days ago | 0

Answered
chirp plot(i dont know what`s wrong plz help me)
Your code had some errors in respect to element-wise operator (^ instead of .^). Also you use the old time variable for the seco...

22 days ago | 0

Answered
How to Adjust x axis plot values in Matlab?
Use the xticks and xlim functions: M= [0.47 0.49 0.50 0.50 0.51 0.51 0.51 0.51 0.51 0.52 ]; Range= 5:2:23; plot(Ran...

29 days ago | 0

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Answered
Smoothed daily count of each column by applying a moving average filter of length 7
If your table has numeric values, then: c=T{:,6}; yy=smooth(c,7) If your table has string values that should represent numeri...

29 days ago | 0

Answered
7x7 arithmetic mean filter
You can colvolve the image with a filter that will perform the average. In your case it will be something like this: I = randn(...

29 days ago | 1

Answered
Finding values corresponding to row and column index of a matrix
Have a look at the sub2ind function: A = [1 12 23 19 1 13; 2 3 13 34 5 75; 5 22 45 5 1 94; 4 5 68 2 5 17; 2 4 34 1...

1 month ago | 0

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Answered
Signal audio - effect downsampling ?
What exactly do you want to achieve? You see, downsampling the signal alone doesn't increases the frequency of it. This effects ...

1 month ago | 1

Answered
how to extract variables from cell (dot operators)
You don't need to pre allocate since the best models are already in your cell array. I believe what you want may be something li...

1 month ago | 1

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Answered
I want to know how to overcome executable standalone app - image write path error?
The problem is the userpath function. As stated in the error, you can't modify a matlab path in your deployed application, regar...

1 month ago | 0

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Answered
how to manipulate Recursive function parameters ?
You didn't post the whole function, but regardless of this: It is possible to call a function without passing all the parameters...

1 month ago | 1

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Answered
Finding the point before landing
You used the function, not the calculated variables to find the index. Your point definiton was also a bit off. This version of ...

1 month ago | 0

Answered
How to produce a scatter plot with smooth line for this plot?
Those smooth lines are interpolations between the given points. For you to have a similar result, what you need to do is find an...

1 month ago | 0

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Answered
Not enough input arguments.
Your Model_Inc function is not correct written, since it always return zero for a dummy variable you created in the beggining. I...

1 month ago | 0

Answered
keep element greater than immediate previous element
This loops does what you want: x = [1 2 3 4 3 2 3 4 6 8 5 5 6 8.5 9 11 12 ]; m = length(x); keep = [x(1)]; discard =[];...

1 month ago | 0

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Answered
fmin additional variables ( are vector)
Your first attempt was right [X fval exitflag output lambda grad hessian] = fmincon(@(x) fun(x,g_14,k_4) , x0, A, b, Aeq, beq,l...

2 months ago | 1

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Answered
Store user input data into matrix
Your loop position was wrong and you should save values as strings, not cells. This version of your code works: n=2; filename=...

2 months ago | 0

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Answered
How to solve a system of equations when multiple parameters changes
A for loop work, maybe you had some trouble with the indexes w_1=[1,2]; w_2=[2,3]; w_3=[3,3]; w_4=[4,5]; w_5=[5,6]; w_6=...

2 months ago | 0

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Answered
Grouping sequence within interval
Something like this should do the trick for you V1 = [0.73 0.74 0.77 0.78 0.79 11.17 11.18 11.19 11.20 11.22 11.23];...

2 months ago | 0

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Answered
How do I round off the answer for the depth to within 2mm?
If you want to round to a specific unit (m, mm, etc), you can do this by just adding an extra parameter to the round function wi...

2 months ago | 0

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Answered
How do I make a scatter 3D plot move towards a line
It mostly depends of what points should move (only neighbours or all of them), but after you decide it you can calculate the clo...

2 months ago | 0

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