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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 mois il y a | 2 réponses | 0
2
réponsesQuestion
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 mois il y a | 1 réponse | 0
1
réponseQuestion
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....
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
Define relationship between variables in an equation
An equation has two variables d and t. eqn = ((t - 21/2)*(d/2 - (20898604612049288806642049279907*t)/70957580590508366543483568...
plus de 3 ans il y a | 1 réponse | 0
1
réponseQuestion
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?
presque 5 ans il y a | 1 réponse | 0
0
réponseQuestion
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=...
presque 5 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 7 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 8 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
environ 8 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
plus de 8 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
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. <<...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
presque 9 ans il y a | 5 réponses | 0
5
réponsesQuestion
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 ...
presque 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
Insert a string in a code to export a figure
Hi, This is code: ... name='location'; options.Format = 'tiff'; hgexport(gcf, 'name.tif', options); .... ...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How to get value from cell
I have a cell like this: ... 'ITEM:' '0' 'ITEM:' '75' 'ITEM:' '-0.0001174' '2.1593e-005' '-10' 'IT...
environ 9 ans il y a | 2 réponses | 0
2
réponsesQuestion
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 ...
environ 9 ans il y a | 2 réponses | 1
2
réponsesQuestion
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); ....
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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 =...
environ 9 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 9 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 10 ans il y a | 3 réponses | 0
3
réponses
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