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Accept 20 answers given by other contributors
Awarded to ly on 18 Aug 2021
Feeds
Question
How to find the coordinate of the point on (180) contour line when y(max)?
How to find the coordinate of the point on (180) contour line when y(max)? Code of the contour line: clear x = 0:0.1:3; y = ...
10 months ago | 2 answers | 0
2
answersQuestion
How to calculate the area between X-Axis, Y-Axis and the (60) contour line?
How to calculate the area between X-Axis, Y-Axis and the (60) contour line? Code of the contour line: x = 1:0.2:2; y = 1:0....
10 months ago | 1 answer | 0
1
answerQuestion
Find maximum of function with 3 variables
How to find maximum of function with 3 variables? -1<= x1 x2 x3 <=1 function =78.4802 + 5.9976*x1 - 1.94506*x2- 1.7211*x3 - 6....
3 years ago | 1 answer | 0
1
answerQuestion
How to put "."after variables in a function for mesh command
nc=10; [D,delta_z] = meshgrid(((-1:1/nc:1)*2.5+7.5)*1.68,((-1:1/nc:1)*0.4+0.6)*1.68); y1=(7497*D)/3125 - (97253*delta_z)/20000...
3 years ago | 1 answer | 0
1
answerQuestion
Display 3D graph for a function
Display a 3D graph for a function x3 = 0; nc=10; y1 = 43.5943 - 12.5921*x1 + 4.08342*x2 + 3.6128*x3 + 14.4637* x1^2 + 9.3*x...
3 years ago | 1 answer | 0
1
answerQuestion
Define relationship between variables in an equation
An equation has two variables d and t. eqn = ((t - 21/2)*(d/2 - (20898604612049288806642049279907*t)/70957580590508366543483568...
3 years ago | 1 answer | 0
1
answerQuestion
define discrete variables in GA Matlab R2012b
Can I define discrete variables in GA in Matlab R2012b? If it is possible and how to do it?
5 years ago | 0 answers | 0
0
answersQuestion
How to define discrete variables in GA (genetic algorithm)
Hi, I need to optimize a function has four variables by GA tool (genetic algorithm). Two variables are continuous like: x1=...
5 years ago | 1 answer | 0
1
answerQuestion
How to set ytickslabel in graph version R2011b
Hi, The graph has ylim([-1 1]) in y axis. Values are displayed -1 -0.5 0 0.5 1 in y axis How to set ytickslabel in graph...
7 years ago | 1 answer | 0
1
answerQuestion
Define a variable from an equation
Hi, I have an equation with x and y are variable and a, b and d are constant. <</matlabcentral/answers/uploaded_files/6377...
8 years ago | 2 answers | 0
2
answersQuestion
Fitting an equation with x,y variables and b, d constant.
Hi, I have an equation. <</matlabcentral/answers/uploaded_files/63504/KakaoTalk_20161117_112325194.png>> x=[10,50,100...
8 years ago | 2 answers | 0
2
answersQuestion
How to define a constant velocity of second order system in a limited time in Simulink
Hi all, I want to simulate a model (Mass, Spring and Damper) which is considered a second order system. A Mass was applied...
8 years ago | 0 answers | 0
0
answersQuestion
Input string to a matrix or a cell
Hi, I have a string and want to input it to a matrix or a cell. string: name matrix: A(2,3) cell: data{2}(2,4); C...
8 years ago | 1 answer | 0
1
answerQuestion
Calculate area between y = 0 and the curve plotted by discontinuos data
Hi, I have a curve like graph. I want to calculate the area between y = 0 and the curve ploted by discontinuous data. <<...
8 years ago | 1 answer | 0
1
answerQuestion
About color of multi curve
Hi, I want to change color of curves automatically for i=1:3 plot(x,y,'color');hold on; end color=b...
8 years ago | 1 answer | 0
1
answerQuestion
How to display y=0 in figure
Hi, I want to display like the figure. <</matlabcentral/answers/uploaded_files/43879/figure.gif>> How to display ...
9 years ago | 5 answers | 0
5
answersQuestion
How to divide a matrix by a number
Hi, I have a function like: r=[0.1:0.1:10]; E=1/(r^3); How to get value E with correct command. I try several ...
9 years ago | 1 answer | 0
1
answerQuestion
Plot figure with 3 matrix 1D x y z like a surface
Three matrices are x y z coordinates for a figure. ... x=[1:10] y=[11:20] z=[21:30] ... Which command can be used ...
9 years ago | 1 answer | 0
1
answerQuestion
Insert a string in a code to export a figure
Hi, This is code: ... name='location'; options.Format = 'tiff'; hgexport(gcf, 'name.tif', options); .... ...
9 years ago | 1 answer | 0
1
answerQuestion
Insert a string into code
I want to insert a string in to code: ... name='time'; filename = 'name_v1.txt'; ... Can the 'time' be inserted ...
9 years ago | 1 answer | 0
1
answerQuestion
How to get value from cell
I have a cell like this: ... 'ITEM:' '0' 'ITEM:' '75' 'ITEM:' '-0.0001174' '2.1593e-005' '-10' 'IT...
9 years ago | 2 answers | 0
2
answersQuestion
Read file txt and input value in Matlab
Hi, I want to read txt file and input value in Matlab. I use "dlmread" but it is always error: "Error using dlmread (line ...
9 years ago | 2 answers | 1
2
answersQuestion
Solve eqn and get real part of solution in MatLab R2011b
I use MatLab R2011b and want to solve an eqn and get the real part of solution. This is the code: ... s=solve(y); ....
9 years ago | 1 answer | 0
1
answerQuestion
Solve eqn and get real solution
I want to solve an eqn and get the real solution. This is the code: ... s=solve(R_); ... And this is solution: s =...
9 years ago | 2 answers | 0
2
answersQuestion
Optimize function (find the minimun value of function of s, s is variable)
I have a function of (s): Rl_f = 1/((- (5731525556631357*s^6)/147573952589676412928 + (21989195558260875*s^5)/18446744073...
9 years ago | 1 answer | 0
1
answerQuestion
About Fit a Two-Term Exponential Model
Hi, 1. What does 'StartPoint' mean in this code: f = fit(x,y,'exp1','StartPoint',[1,2]) plot(f,x,y) 2. The blue and bla...
9 years ago | 0 answers | 0
0
answersQuestion
Run a short code in a big program
Hi! I have a big program about 250 rows. It is included 3 parts. Part 1 is from 1-60 rows, Part 2 is from 61-150, Part 3 is t...
9 years ago | 1 answer | 0
1
answerQuestion
Read data in log.lammps from LAMMPS to Matlab
I simulate by LAMMPS and have a log.lammps file. Now I want to use data from this file to Matlab. How can I read data to Matla...
9 years ago | 1 answer | 0
1
answerQuestion
Display µm not correct in figure in Matlab
I use Matlab 2011b I have code for figure like this: ... set(0,'DefaultAxesFontName', 'Times New Roman') set(0,'DefaultAxesF...
10 years ago | 3 answers | 0
3
answers
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