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Artur M. G. Lourenço


Federal University of Campina Grande

Active since 2011

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Environmental Engineer, Master in Civil and Environmental Engineering. Works in the area of water resources, with emphasis on modeling water systems, environmental systems analysis and decision support systems.
Professional Interests: Environmental Engineering

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How to optimize a fuction whith SCE-UA algorithm?
Hello Guys, I'm trying to optimize a function using the SCE-UA algorithm, but I am not getting success. Could someone help me...

10 years ago | 0 answers | 0

0

answers

Answered
nntrainingtool gui for custom training algorithm
I tried doing this once, but got no success. I was told that you can edit the original file '*. M' some training function pre-ex...

10 years ago | 0

Answered
How to define constraints that result integer numbers in Linear programming?
If someone needs: http://www.mathworks.se/matlabcentral/fileexchange/25259-linear-mixed-integer-program-solver

11 years ago | 0

Question


How to define constraints that result integer numbers in Linear programming?
Hello, i need define the constraints in my linear programming problem, the constraints need to be integer numbers. e.g.: ...

11 years ago | 2 answers | 0

2

answers

Question


Excel add-in say´s "MATLAB is not running, do you want run MATLAB now?". How to solve this problem?
Hi! When I try to use exlink in excel (putmatrix, getmatrix) although MATLAB 2013a is open, excel opens new MATLAB which l...

11 years ago | 2 answers | 0

2

answers

Question


How to find x data in a interpolate curve?
Hello everybody, how can I find the data of x related to y on a curve interpolated data for x and y? wanted to find the ti...

11 years ago | 1 answer | 0

1

answer

Answered
How to update new value in next iteration?
Sorry if I misunderstood. It would be just that? S12t=6+2*1i; S01t=10+5*1i; U1=110; U2=110; R12 = 16.2+24*1i; ...

11 years ago | 0

Answered
How to save a *.fig with the legend included?
Try this, figure; A = loglog(1:50) hold on B = loglog(1:50) C = loglog(1:50) str = sprintf('3SRS - Run %d - Dir %...

11 years ago | 0

Answered
Distribution graph velocity : how to make simple paraboloid of revolution?
i can´t do it

11 years ago | 0

Answered
the command "clc" and "clear all" does not work on a script in the editor.
I was misunderstood in my question or did poorly.

11 years ago | 0

Answered
Distribution graph velocity : how to make simple paraboloid of revolution?
sorry 'u' is: u = (-a^2 - r^2) / 4 * mi

11 years ago | 0

Question


Distribution graph velocity : how to make simple paraboloid of revolution?
Hello Guys, I have a simple problem. You remember the mechanics of fluids? To calculate the velocity distribution in a circul...

11 years ago | 4 answers | 0

4

answers

Answered
How to delimit the number of decimal places in a colorbar?
OWW, thank you guys!!!

11 years ago | 0

Question


How to delimit the number of decimal places in a colorbar?
In this case, for example: contourf(peaks(60)) colormap cool colorbar('location','southoutside') i want 4 decima...

11 years ago | 3 answers | 0

3

answers

Answered
the command "clc" and "clear all" does not work on a script in the editor.
inglêsportuguêsespanhol I found that putting too many comments before or after the command "clc" and "clear all" in the scr...

12 years ago | 0

Question


the command "clc" and "clear all" does not work on a script in the editor.
The commands "clc" and "clear all" don't work in my script, somentimes yes. i have matlab 2011 a and b e 2012 a.

12 years ago | 6 answers | 0

6

answers

Answered
New Toolbox RNA: access the data divided by net.divide function
Network Object

12 years ago | 0

Question


New Toolbox RNA: access the data divided by net.divide function
I'm trying adapt me with new ANN toolbox and use the functions pre-programed usually i wore the complex lines for divide the dat...

12 years ago | 2 answers | 0

2

answers

Question


Curve Fitting Toolbox - change algorithm of fit
I'm making an adjustment, using a custom log equation, the following: y = b * log (x) + c I wanted to know how to change t...

12 years ago | 1 answer | 0

1

answer

Answered
marking points
A=[12 34 90 45]; B=[0 8 9 36]; C = [ 1 2 3 4]; plot(A,B,'b') hold on plot(A,C,'r')

12 years ago | 0

| accepted

Answered
how can i plot the difference of two different plots?
for me show this: ??? Undefined function or method 'kepler' for input arguments of type 'double'. >> help kepler keple...

12 years ago | 0

Answered
symbolic array, zero-based elements into another array
Thank you for all

12 years ago | 0

Question


symbolic array, zero-based elements into another array
if I have the following matrix: syms x11 x21 x31 x41 a = [ 1*x11 2*x21 3*x31 3*x41] b = [ 1*x11 2*x21 3...

12 years ago | 3 answers | 0

3

answers

Answered
create symbolic variables
My god, I ask my five excuses. Always read the doc before asking a question and this time I have not read. Thank you, this is no...

12 years ago | 0

Question


create symbolic variables
My problem is the following: if I have an array ij then have to create variables ij. ex.: a = [ 1 2; 3 4] then b...

12 years ago | 2 answers | 0

2

answers

Question


menu position and size
how to make set position and zise of a menu e.g.: choice = menu('Choose a color','Red','Blue','Green') i want make th...

12 years ago | 1 answer | 1

1

answer

Answered
overlay graphics
someone?

12 years ago | 0

Question


overlay graphics
how can I do to overlay two graphs having a point of overlap? the image below as an example: <http://imageshack.us/photo/...

12 years ago | 1 answer | 0

1

answer

Question


One more : Symbolic math
see: syms x1 x2 x3 x1 = 23/5 - x3/5 - (2*x2)/5 how to make this: disp('x1= ',x1) could be: disp(['x1...

12 years ago | 1 answer | 0

1

answer

Question


Symbolic variables: Isolate a variable in an equation?
I always have trouble isolating symbolic variables in equations. See this for example: 8*x1 + 2*x2 + 3*x3 - 51 = 0 want to is...

12 years ago | 2 answers | 0

2

answers

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