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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 = ...
3 maanden 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....
3 maanden 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....
meer dan 2 jaar 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...
meer dan 2 jaar 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...
meer dan 2 jaar 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...
bijna 3 jaar 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?
meer dan 4 jaar 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=...
meer dan 4 jaar 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...
bijna 7 jaar 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...
meer dan 7 jaar 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...
meer dan 7 jaar 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...
meer dan 7 jaar 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...
bijna 8 jaar 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. <<...
bijna 8 jaar 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...
ongeveer 8 jaar 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 ...
meer dan 8 jaar 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 ...
meer dan 8 jaar 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 ...
meer dan 8 jaar 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); .... ...
meer dan 8 jaar 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 ...
meer dan 8 jaar 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...
meer dan 8 jaar 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 ...
meer dan 8 jaar 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); ....
meer dan 8 jaar 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 =...
meer dan 8 jaar 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...
meer dan 8 jaar 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...
meer dan 8 jaar 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...
meer dan 8 jaar 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...
meer dan 8 jaar 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...
meer dan 9 jaar ago | 3 answers | 0
3
answers
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