Community Profile

photo

Thiago Henrique Gomes Lobato


Last seen: Today
164 total contributions since 2019

Thiago Henrique Gomes Lobato's Badges

  • 6 Month Streak
  • Knowledgeable Level 3
  • First Answer

View details...

Contributions in
View by

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 día ago | 0

| accepted

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 día 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 día ago | 1

| accepted

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 día ago | 0

| accepted

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 día ago | 1

| accepted

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 ...

8 días 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...

8 días ago | 0

| accepted

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...

8 días 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 =[];...

8 días ago | 0

| accepted

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...

15 días ago | 1

| accepted

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=...

15 días ago | 0

| accepted

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=...

15 días ago | 0

| accepted

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];...

15 días ago | 0

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...

15 días ago | 0

| accepted

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...

22 días ago | 0

Answered
Particle size calculation from given image
The size for each particle is a task which is extremely hard to automatize, you will always get some error due to different ligh...

22 días ago | 0

Answered
Mean absolute value for ecg signal
Your code is okay with exception of the length. If you have a sampling rate of 250 Hz (or, in another way of expression, values ...

22 días ago | 0

Answered
How to work with Matrices that have a great difference in element size (e.g. 1 to 10e+15)?
I don't believe you're facing problems due to the difference of magnitudes, but rather because your problem may be very ill-cond...

29 días ago | 0

| accepted

Answered
Nonlinear multiobjective optimization - Gamultiobj - Options
If you write your optimization problem like this: x = gamultiobj(fun,nvars) You're basically telling the optimizer that you ha...

29 días ago | 0

Answered
How to generate lines between a fixed point and evenly spaced points on a line
If I understood your question right you mean something like this? clc; xlim([0, 100]); ylim([0, 100]); hold on Ax=0; Ay...

29 días ago | 1

| accepted

Answered
PLOTTING A SINE WAVE USING TRIGNOMETRIC FOURIER SERIES
You have an analytical waveform, so you can generate it for 4 cycles without using any fourier function. Then, if you use the ff...

29 días ago | 0

Answered
how to imput a matrix end outpur four arguments
The main function creation in matlab has the following form: function output = FuncName(input) output = f(input) end Input...

29 días ago | 0

Answered
Optimization of 4 variables by minimizing RMSE error as an objective function using fminsearch
Some points: Your rmse function is not returning any value You need to pass a function to the optimization function that takes...

alrededor de 1 mes ago | 0

| accepted

Answered
I'm getting an error in obtaining the optimal solution for a nonlinear equation
You have an error in your wolf loop. It should be like this: while ( ( ( fh > f + c*alpha0*gradx'*p ) || ( abs(gradk)'*p > cu*a...

alrededor de 1 mes ago | 0

| accepted

Answered
odeEueler Explicit Eurlers method
You had many syntax errors on your code. Here is a version with them fixed and it should work. Although a negative weighting is ...

alrededor de 1 mes ago | 0

| accepted

Answered
Filter time-variant data and reduce its length
Take a look at medfilt1 and/or movmean. They sould help you reduce the fluctuations. To reduce the data length you just index th...

alrededor de 1 mes ago | 0

Answered
How to use function like `min` in symfun?(I got an error)
You can't use min or max in symbolic variables in matlab. A work around can be this one: syms x1 x2 real; xlt = symfun(1/2*(x1...

alrededor de 1 mes ago | 1

| accepted

Answered
Minimum of a function
You had some typos in your constrain function and also you don't need to create a function file for your function since you alre...

alrededor de 1 mes ago | 1

| accepted

Answered
How do I fix the array error?
Look this part as example: for t = ProjectedTime HatchVec = Hatchling - (Hatchling .* 0.675) - (Hatchling .* 0.325) + (Bre...

alrededor de 1 mes ago | 0

| accepted

Answered
how to fit a Nonlinear model with multiple input and single output by using dataset in matlab
Without your data nor any code is difficult to specifically help you. Still, a general thing you may do, if you already have the...

alrededor de 1 mes ago | 0

Load more