Answered

How to construct array with certain slope ?

Look at this rotation script example: https://www.mathworks.com/matlabcentral/answers/93554-how-can-i-rotate-a-set-of-points-in...

How to construct array with certain slope ?

Look at this rotation script example: https://www.mathworks.com/matlabcentral/answers/93554-how-can-i-rotate-a-set-of-points-in...

7 days ago | 0

Answered

Problems with changing the order of a binary representation

NJ=4 for i = 1:2^NJ-1 struct(i,:) = fliplr(dec2bin(i,NJ)); end struct = 15×4 char array '1000' '0100' ...

Problems with changing the order of a binary representation

NJ=4 for i = 1:2^NJ-1 struct(i,:) = fliplr(dec2bin(i,NJ)); end struct = 15×4 char array '1000' '0100' ...

14 days ago | 0

Answered

How can I justify my matrices?

I find this form using Live Editor preferable to pretty. syms t1 t2 t3 d3 a2 J11 = [-cos(t1)*(d3*cos(t2+t3) + a2*cos(t2)), sin...

How can I justify my matrices?

I find this form using Live Editor preferable to pretty. syms t1 t2 t3 d3 a2 J11 = [-cos(t1)*(d3*cos(t2+t3) + a2*cos(t2)), sin...

17 days ago | 0

Answered

How can I insert zeros into every other index of a column vector?

@carles Martinez >> and in an horizontal array? Whether A is vertical or horizontal, use upsample. A = 1 2 3 ...

How can I insert zeros into every other index of a column vector?

@carles Martinez >> and in an horizontal array? Whether A is vertical or horizontal, use upsample. A = 1 2 3 ...

18 days ago | 0

Answered

How to write summation in matlab with two variables?

I am new to sym, so I thought I would give this a try. Please check carefully, as I did not have time to do so. I hope you are d...

How to write summation in matlab with two variables?

I am new to sym, so I thought I would give this a try. Please check carefully, as I did not have time to do so. I hope you are d...

20 days ago | 0

| accepted

Answered

Newton Raphson - saving all values and using last iteration value as initial for next

The final x values match your spreadsheet results. Your suggested x0 converges too soon to be interesting. Set it to 1.0 to actu...

Newton Raphson - saving all values and using last iteration value as initial for next

The final x values match your spreadsheet results. Your suggested x0 converges too soon to be interesting. Set it to 1.0 to actu...

22 days ago | 0

Answered

Index in position 1 is invalid. Array indices must be positive integers or logical values.

Would be very useful if you are able to post a minimal program exhibiting the error that we could run. In the debugger, set the ...

Index in position 1 is invalid. Array indices must be positive integers or logical values.

Would be very useful if you are able to post a minimal program exhibiting the error that we could run. In the debugger, set the ...

22 days ago | 0

Index in position 1 is invalid. Array indices must be positive integers or logical values.

Would be very useful if you are able to post a minimal program exhibiting the error that we could run. In the debugger, set the ...

22 days ago | 0

Answered

I need help with using a while loop

Looks like you are trying to solve a difference equation. Take a look at what is happening: c1 = 0.1; v1 = 0.1; v2 = 1; p = ...

I need help with using a while loop

Looks like you are trying to solve a difference equation. Take a look at what is happening: c1 = 0.1; v1 = 0.1; v2 = 1; p = ...

22 days ago | 1

| accepted

Answered

Keep a temporary variable after parfor

>> Parfor loop works when i comment out the plotting parts of the code. I tried what you said and only experienced what you wro...

Keep a temporary variable after parfor

>> Parfor loop works when i comment out the plotting parts of the code. I tried what you said and only experienced what you wro...

1 month ago | 0

| accepted

Answered

how to fix Warning: Imaginary parts of complex X and/or Y arguments ignored

If you have a negative number raised to a non-integer power, you can sometimes get a complex number. Take a look at: https://ww...

how to fix Warning: Imaginary parts of complex X and/or Y arguments ignored

If you have a negative number raised to a non-integer power, you can sometimes get a complex number. Take a look at: https://ww...

1 month ago | 0

Answered

Solving a simple equation

Sorry, no idea if this is right. clc, clearvars %Angle = B %Thickness = u %Inner Radius = p %Developed length = L %L = L1+...

Solving a simple equation

Sorry, no idea if this is right. clc, clearvars %Angle = B %Thickness = u %Inner Radius = p %Developed length = L %L = L1+...

1 month ago | 0

| accepted

Question

Convert near zero complex parts to 0

In R2020a, I took a complex vector and converted near zero parts to zero. It took two long lines to do it. Can it be done in one...

1 month ago | 1 answer | 0

Answered

What am I doing wrong here? I am trying to recreate following highlighted equations in the table.

clc; clear; clf ep = linspace(0,1); m1 = 1.5; m2 = 3.8; ep0= 1; alpha = 0.785; epp = 0.11; qep = (2.76*ep.*cosh((3*ep)-1.92)...

What am I doing wrong here? I am trying to recreate following highlighted equations in the table.

clc; clear; clf ep = linspace(0,1); m1 = 1.5; m2 = 3.8; ep0= 1; alpha = 0.785; epp = 0.11; qep = (2.76*ep.*cosh((3*ep)-1.92)...

2 months ago | 0

| accepted

Answered

Script not found in the Command Windows

I am expecting that you will get the following: >> which essai 'essai' not found. Write down the folder where your essai.m fi...

Script not found in the Command Windows

I am expecting that you will get the following: >> which essai 'essai' not found. Write down the folder where your essai.m fi...

2 months ago | 0

Answered

Obtaining the envelope of AM signal using hilbert transform

In general, if you increase the carrier frequency, you will get a better envelope. Specific to your figure, to remove the rippl...

Obtaining the envelope of AM signal using hilbert transform

In general, if you increase the carrier frequency, you will get a better envelope. Specific to your figure, to remove the rippl...

2 months ago | 0

Answered

computing vectors with string and numbers (easy question)

Here is code that keeps the indexing scheme based upon the order in which the names occur in your vector of strings. >> S = ["H...

computing vectors with string and numbers (easy question)

Here is code that keeps the indexing scheme based upon the order in which the names occur in your vector of strings. >> S = ["H...

2 months ago | 1

| accepted

Answered

computing vectors with string and numbers (easy question)

>> S = ["joe" "april" "andrea" "joe" "andrea"] S = 1×5 string array "joe" "april" "andrea" "joe" "andrea" ...

computing vectors with string and numbers (easy question)

>> S = ["joe" "april" "andrea" "joe" "andrea"] S = 1×5 string array "joe" "april" "andrea" "joe" "andrea" ...

2 months ago | 0

Answered

Simulating a drone and bird as radar targets

Sounds like a good project. Personally, I would take a movie of a bird and a drone, and then try to reconstruct a 3D polygon of ...

Simulating a drone and bird as radar targets

Sounds like a good project. Personally, I would take a movie of a bird and a drone, and then try to reconstruct a 3D polygon of ...

2 months ago | 0

Answered

How to generate a list of random ID which can later be used instead of participant name?

Due to the cyclist remark about homework, I am just starting the script. It leaves out certain patterns like 'a9a9' since it is ...

How to generate a list of random ID which can later be used instead of participant name?

Due to the cyclist remark about homework, I am just starting the script. It leaves out certain patterns like 'a9a9' since it is ...

2 months ago | 0

| accepted

Answered

Syntax Question, Why does this equal zero?

Good question. :) >> 1 - 7*( sym(8/7) - 1 ) ans = 0 % you are right; the answer is 0 For double numbers, look at the format...

Syntax Question, Why does this equal zero?

Good question. :) >> 1 - 7*( sym(8/7) - 1 ) ans = 0 % you are right; the answer is 0 For double numbers, look at the format...

2 months ago | 1

Answered

Forcing Page Breaks in MATLAB

The official 2016 answer is here, and no discernible updates since 2016. It would be great if MathWorks would add that to Live E...

Forcing Page Breaks in MATLAB

The official 2016 answer is here, and no discernible updates since 2016. It would be great if MathWorks would add that to Live E...

2 months ago | 0

Answered

how to get the mean for specific rows number of one columns

M = [ ... 1 5 2 7 3 9 1 9 2 7 3 9 ]; T = array2table( M, ... 'VariableNames',{'Month','...

how to get the mean for specific rows number of one columns

M = [ ... 1 5 2 7 3 9 1 9 2 7 3 9 ]; T = array2table( M, ... 'VariableNames',{'Month','...

3 months ago | 0

| accepted

Answered

Vector. Change the way my program gives me the answer.

v = [1 2 -3 4]; v( diff( sign( [v(1) v] ) ) ~= 0 ) ans = -3 4

Vector. Change the way my program gives me the answer.

v = [1 2 -3 4]; v( diff( sign( [v(1) v] ) ) ~= 0 ) ans = -3 4

3 months ago | 1

Answered

Vector. Change the way my program gives me the answer.

v = [1 2 -3 4]; n = 1; l = length (v); ii = 1; c = []; while (n < l) a = v(n); b = v(n+1); n = n+1; % if (a <...

Vector. Change the way my program gives me the answer.

v = [1 2 -3 4]; n = 1; l = length (v); ii = 1; c = []; while (n < l) a = v(n); b = v(n+1); n = n+1; % if (a <...

3 months ago | 1

Answered

Group data in bins

Hope this is close to what you are looking for. EDGES' ans = 0 0.5000 1.0000 1.5000 2.0000 ...

Group data in bins

Hope this is close to what you are looking for. EDGES' ans = 0 0.5000 1.0000 1.5000 2.0000 ...

3 months ago | 0

Answered

How to solve matrix function in Matlab?

Define Z = AXB + C - X You have to start off with your initial best guess for X based upon the nature of the model. For lack of...

How to solve matrix function in Matlab?

Define Z = AXB + C - X You have to start off with your initial best guess for X based upon the nature of the model. For lack of...

3 months ago | 1

Answered

Creating blocks of average values from a series but avoiding dynamic variable names

Since you have 5 groups of 100 numbers, I thought you wanted the mean of each group. That gives 5 means. So I did not understand...

Creating blocks of average values from a series but avoiding dynamic variable names

Since you have 5 groups of 100 numbers, I thought you wanted the mean of each group. That gives 5 means. So I did not understand...

3 months ago | 1

| accepted

Answered

plot discrete time domain signals

I recommend using following substitutions: plot(t,y) axis( [-1 10 0 1])

plot discrete time domain signals

I recommend using following substitutions: plot(t,y) axis( [-1 10 0 1])

3 months ago | 0

| accepted

Solved

Longest run of consecutive numbers

Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

3 months ago