1.053 total contributions since 2017

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Answered

How to solve system of 2nd order differential equations using ode45

plot3(t,x(:,1),x(:,3))

How to solve system of 2nd order differential equations using ode45

plot3(t,x(:,1),x(:,3))

alrededor de 12 horas ago | 0

Answered

summing along 3rd dimension every 10 frames

If A is your matrix: B = sum(reshape(A,32,32,10,[]),3);

summing along 3rd dimension every 10 frames

If A is your matrix: B = sum(reshape(A,32,32,10,[]),3);

2 días ago | 0

Answered

wo kann ich das R2018b runter laden, eine Matlablizenz habe ich

<https://de.mathworks.com/downloads/web_downloads/select_release?mode=gwylf>

wo kann ich das R2018b runter laden, eine Matlablizenz habe ich

<https://de.mathworks.com/downloads/web_downloads/select_release?mode=gwylf>

2 días ago | 1

Answered

Why does this for loop fail?

|vpasolve| may find more than one solution. Try to save your results in a cell array: ... Vrange = cell(1, length(Trange))...

Why does this for loop fail?

|vpasolve| may find more than one solution. Try to save your results in a cell array: ... Vrange = cell(1, length(Trange))...

6 días ago | 0

| accepted

Answered

How to use fsolve with a variable parameter?

Define the values fot T21 that you want to calculate for. Then use a for loop and call your function inside the loop as often as...

How to use fsolve with a variable parameter?

Define the values fot T21 that you want to calculate for. Then use a for loop and call your function inside the loop as often as...

6 días ago | 2

| accepted

Answered

How to extract diagonal line data from image

The result for every line object contains an information about the angle of the line. This information can be used as input to <...

How to extract diagonal line data from image

The result for every line object contains an information about the angle of the line. This information can be used as input to <...

6 días ago | 0

Answered

logspace equivalent and sin(x) [solved]

x = 10.^(1:3) % x=logspace(1, 3, 3) result = sum(A>0.5) % Number of elements in A bigger than 0.5

logspace equivalent and sin(x) [solved]

x = 10.^(1:3) % x=logspace(1, 3, 3) result = sum(A>0.5) % Number of elements in A bigger than 0.5

7 días ago | 1

| accepted

Answered

coding error ode45

If possible try to avoid global variables: %define parameters %x is the number of cancer cells x0 = 1000; % c2 is the number...

coding error ode45

If possible try to avoid global variables: %define parameters %x is the number of cancer cells x0 = 1000; % c2 is the number...

7 días ago | 0

| accepted

Answered

Remove noise from screw image

Replace the medfilt2 by a gaussian blur using imgaussfilt: %% read image and find points that should lie on a straight line A ...

Remove noise from screw image

Replace the medfilt2 by a gaussian blur using imgaussfilt: %% read image and find points that should lie on a straight line A ...

7 días ago | 1

Answered

Detect orientation of screw image

Using this script lets you know which angle to rotate. Then use this information to rotate the image and check the orientation a...

Detect orientation of screw image

Using this script lets you know which angle to rotate. Then use this information to rotate the image and check the orientation a...

7 días ago | 1

| accepted

Answered

Multiple output values on an if else loop

in every run of your loop you overwrite WeightF. Use indexing to avoid this: WeightF(i) = ... also using i for loop count is n...

Multiple output values on an if else loop

in every run of your loop you overwrite WeightF. Use indexing to avoid this: WeightF(i) = ... also using i for loop count is n...

7 días ago | 0

Answered

Create a matrix that stores rows that are not from a random sample

A way smarter is using the ismember function - here is an example - all you need ist the last line, the first two lines are just...

Create a matrix that stores rows that are not from a random sample

A way smarter is using the ismember function - here is an example - all you need ist the last line, the first two lines are just...

7 días ago | 0

Answered

how to Conversion transfer function to state space ...MIMO help me

<https://de.mathworks.com/help/control/ref/ss.html?s_tid=doc_ta#f4-373013 Convert Transfer Function to State-Space Model>

how to Conversion transfer function to state space ...MIMO help me

<https://de.mathworks.com/help/control/ref/ss.html?s_tid=doc_ta#f4-373013 Convert Transfer Function to State-Space Model>

15 días ago | 0

Answered

Ode45 change of a value in the equations

Do 2 calls of ode45. The first from tspan=[0 365]. Then use the final result from this as initial condition for the second call ...

Ode45 change of a value in the equations

Do 2 calls of ode45. The first from tspan=[0 365]. Then use the final result from this as initial condition for the second call ...

18 días ago | 0

Answered

how can i code energy balance eq in matlab

There is an analytical solution found by dsolve: syms T_Co(t) T_Ho(t) M_C M_H T_Ci T_Hi rho_C rho_H V_C V_H UA_i C_Pmc C_Pmh ...

how can i code energy balance eq in matlab

There is an analytical solution found by dsolve: syms T_Co(t) T_Ho(t) M_C M_H T_Ci T_Hi rho_C rho_H V_C V_H UA_i C_Pmc C_Pmh ...

18 días ago | 1

| accepted

Answered

Reading file with pilcrow (paragraph) sign

This should help: >> A = '09.10.2019¶' A = '09.10.2019¶' >> A(end) = [] A = '09.10.2019' also maybe hel...

Reading file with pilcrow (paragraph) sign

This should help: >> A = '09.10.2019¶' A = '09.10.2019¶' >> A(end) = [] A = '09.10.2019' also maybe hel...

19 días ago | 1

| accepted

Answered

Coupled differential equation to solve fluids

syms x(t) y(t) x0_t x1_t x2_t y0_t y1_t y2_t r0 r1 r2 f1 = x0_t == (-3+0.2*sin(0.2*t)); f2 = x1_t == (3+0.1*sin(0.1*t)); f3 =...

Coupled differential equation to solve fluids

syms x(t) y(t) x0_t x1_t x2_t y0_t y1_t y2_t r0 r1 r2 f1 = x0_t == (-3+0.2*sin(0.2*t)); f2 = x1_t == (3+0.1*sin(0.1*t)); f3 =...

19 días ago | 1

| accepted

Answered

Solve overspecified equation system

If you have symbolic toolbox, use: % This part builds a system to solve with fsolve syms u1 u2 up2 l1 l2 xa ya xpa ypa ap0 x ...

Solve overspecified equation system

If you have symbolic toolbox, use: % This part builds a system to solve with fsolve syms u1 u2 up2 l1 l2 xa ya xpa ypa ap0 x ...

19 días ago | 0

| accepted

Answered

Iterate between fixed numbers in an array and store into a matrix.

I suggest to reshape the array to have 250 rows. The most Matlab functions like mean, max, min, sum... work on the columns of an...

Iterate between fixed numbers in an array and store into a matrix.

I suggest to reshape the array to have 250 rows. The most Matlab functions like mean, max, min, sum... work on the columns of an...

20 días ago | 0

Answered

Delay differential equation of glucose insulin model

Another try, after reading a little bit about dde's: [t,y] = delayed; % plot results subplot(3,1,1) plot(t,y(1,:),'LineWid...

Delay differential equation of glucose insulin model

Another try, after reading a little bit about dde's: [t,y] = delayed; % plot results subplot(3,1,1) plot(t,y(1,:),'LineWid...

20 días ago | 0

Answered

What is the version of Computer Vision Toolbox with Matlab R2019b?

MATLAB Version: 9.7.0.1216025 (R2019b) Update 1 MATLAB License Number: ********** Operating System: Microsoft Windows 10 Home ...

What is the version of Computer Vision Toolbox with Matlab R2019b?

MATLAB Version: 9.7.0.1216025 (R2019b) Update 1 MATLAB License Number: ********** Operating System: Microsoft Windows 10 Home ...

22 días ago | 1

Answered

Using Ode45 to solve differential equation with time dependent variable

% call the nested function [t,dTempdt] = my_assignment; % plot the results plot(t,dTempdt) function [t,dTempdt] = my_assig...

Using Ode45 to solve differential equation with time dependent variable

% call the nested function [t,dTempdt] = my_assignment; % plot the results plot(t,dTempdt) function [t,dTempdt] = my_assig...

22 días ago | 0

| accepted

Answered

DOUBLE cannot convert the input expression into a double array.

During the first run of your loop U=0.0, which can be converted to double in line 144 and stored in SF(1). But in the second run...

DOUBLE cannot convert the input expression into a double array.

During the first run of your loop U=0.0, which can be converted to double in line 144 and stored in SF(1). But in the second run...

23 días ago | 0

Answered

How to get double array from string

>> A = str2num('[1,2,3:6,9,12:15]') A = 1 2 3 4 5 6 9 12 13 14 15

How to get double array from string

>> A = str2num('[1,2,3:6,9,12:15]') A = 1 2 3 4 5 6 9 12 13 14 15

23 días ago | 0

| accepted

Answered

subplot of trigonometric function

A = @(x) sin(x); subplot(3,1,1) fplot(A,[1 50]) B = @(x) cos(x); subplot(3,1,2) fplot(B,[1 50]) C = @(x) tan(x); subplot(...

subplot of trigonometric function

A = @(x) sin(x); subplot(3,1,1) fplot(A,[1 50]) B = @(x) cos(x); subplot(3,1,2) fplot(B,[1 50]) C = @(x) tan(x); subplot(...

24 días ago | 0

Answered

Trouble with Nested Function - So I am trying to have 'equation1' return the outputs [G, H, K, C] but it doesn't recognize them... why? Any help is appreciated

% Variables to play with L1 = 1; L2 = 3; L3 = 4; L4 = 2.6 theta1 = 15; theta2 = 47.5; omega = 66; % Call your function...

Trouble with Nested Function - So I am trying to have 'equation1' return the outputs [G, H, K, C] but it doesn't recognize them... why? Any help is appreciated

% Variables to play with L1 = 1; L2 = 3; L3 = 4; L4 = 2.6 theta1 = 15; theta2 = 47.5; omega = 66; % Call your function...

24 días ago | 0

Answered

making a graph in matlab

doc subplot small example: A = randi(50,10,2); subplot(3,1,1) scatter(A(:,1),A(:,2),'*r') B = randn(20,60); subplot(3,1,...

making a graph in matlab

doc subplot small example: A = randi(50,10,2); subplot(3,1,1) scatter(A(:,1),A(:,2),'*r') B = randn(20,60); subplot(3,1,...

24 días ago | 0

Answered

como crear un .gif

https://de.mathworks.com/matlabcentral/fileexchange/28766-animated-gif-creator

como crear un .gif

https://de.mathworks.com/matlabcentral/fileexchange/28766-animated-gif-creator

24 días ago | 0

Answered

Error when solving symbolic equation in nested for loop

The first time your loop runs free of errors, but then your code is selfkilling, because you cast the symbolic variable b to be ...

Error when solving symbolic equation in nested for loop

The first time your loop runs free of errors, but then your code is selfkilling, because you cast the symbolic variable b to be ...

24 días ago | 0

| accepted

Answered

Error using horzcat Dimensions of matrices being concatenated are not consistent.

Do the following (i did for an example image on my computer): im = imread('*:\***\***\****.PNG'); im=double(im); m=mean(mean(...

Error using horzcat Dimensions of matrices being concatenated are not consistent.

Do the following (i did for an example image on my computer): im = imread('*:\***\***\****.PNG'); im=double(im); m=mean(mean(...

24 días ago | 0