Answered

Getting "Unrecognized function or variable 'reshape'" error!!

reshape([1 2 3 4],:,1); Notice the : . : by itself can only appear (a) in comments; (b) in character vectors; (c) in string...

Getting "Unrecognized function or variable 'reshape'" error!!

reshape([1 2 3 4],:,1); Notice the : . : by itself can only appear (a) in comments; (b) in character vectors; (c) in string...

2 Tage ago | 1

| accepted

Answered

Unsure why heatmaps cannot be produced.

imgetfile() is part of the Image Processing Toolbox. The code would fail if you do not have that toolbox installed and licensed....

Unsure why heatmaps cannot be produced.

imgetfile() is part of the Image Processing Toolbox. The code would fail if you do not have that toolbox installed and licensed....

2 Tage ago | 0

Answered

How can I solve dimension problem? Simulink

You need to transpose the data in the file. The first row is the time stamps and rows after that are samples for that time. You ...

How can I solve dimension problem? Simulink

You need to transpose the data in the file. The first row is the time stamps and rows after that are samples for that time. You ...

2 Tage ago | 0

Answered

How can I plot this picture!!!?

plot([x, x, repmat([x-delta,x+delta,nan],1,9)], [0, 1,.1,.1,nan,.2,.2,nan,.3,.3,nan,.4,.4,nan,.5,.5,nan,.6,.6,nan,.7,.7,nan,.8,...

How can I plot this picture!!!?

plot([x, x, repmat([x-delta,x+delta,nan],1,9)], [0, 1,.1,.1,nan,.2,.2,nan,.3,.3,nan,.4,.4,nan,.5,.5,nan,.6,.6,nan,.7,.7,nan,.8,...

2 Tage ago | 0

Answered

the funcion of "load" might have mistakes while loading the hexadecmial number. The hexadecimal numbers start with "0x".

https://www.mathworks.com/help/matlab/ref/load.html#btm0etn-1-filename ASCII files must contain a rectangular table of number...

the funcion of "load" might have mistakes while loading the hexadecmial number. The hexadecimal numbers start with "0x".

https://www.mathworks.com/help/matlab/ref/load.html#btm0etn-1-filename ASCII files must contain a rectangular table of number...

2 Tage ago | 0

Answered

Unable to perform assignment because brace indexing is not supported for variables of this type.

data{iBlob, 1} = features.Centroid(2); data{iBlob, 2} = features.Centroid(1); data{iBlob, 3} = iBlob; data{iB...

Unable to perform assignment because brace indexing is not supported for variables of this type.

data{iBlob, 1} = features.Centroid(2); data{iBlob, 2} = features.Centroid(1); data{iBlob, 3} = iBlob; data{iB...

2 Tage ago | 0

| accepted

Answered

Is exp() a Documented Function in the Symbolic Math Toolbox?

There is no doc for it. help sym/exp gives very brief help (nearly useless)

Is exp() a Documented Function in the Symbolic Math Toolbox?

There is no doc for it. help sym/exp gives very brief help (nearly useless)

2 Tage ago | 0

Answered

where are the errors in my code? please help me!!

Your first solve() returns multiple roots. Your vpasolve() is then trying to process all of the roots at the same time . Remem...

where are the errors in my code? please help me!!

Your first solve() returns multiple roots. Your vpasolve() is then trying to process all of the roots at the same time . Remem...

3 Tage ago | 0

Answered

looping through multiple numbers

a_t(i) = A(A(:,2) > avsize(i),:);

looping through multiple numbers

a_t(i) = A(A(:,2) > avsize(i),:);

3 Tage ago | 0

| accepted

Answered

collect coefficient of a symbolic variable in mathematical expression

Use coeffs() syms T m_q m_p x(t) z(t) x_dot(t) x_ddot(t) z_dot(t) alpha(t) z_ddot(t) alpha_dot(t) alpha_ddot(t) theta(t) theta...

collect coefficient of a symbolic variable in mathematical expression

Use coeffs() syms T m_q m_p x(t) z(t) x_dot(t) x_ddot(t) z_dot(t) alpha(t) z_ddot(t) alpha_dot(t) alpha_ddot(t) theta(t) theta...

3 Tage ago | 0

Answered

Why legend doesn't match plot

allOri = unique(ori); The size of that is not known ahead of time. You construct hPlot(li) elements over two separate loops th...

Why legend doesn't match plot

allOri = unique(ori); The size of that is not known ahead of time. You construct hPlot(li) elements over two separate loops th...

3 Tage ago | 0

Answered

How to determine coefficients by fit for multiple series of data?

x = [2,4,6,NaN,NaN; 2,4,6,8,10; 2,4,6,8,NaN]; y = [3,5,7,NaN,NaN; 4,8,11,25,32; 7,10,15,17,NaN]; D = [3;5;7]; N = size(x, 1);...

How to determine coefficients by fit for multiple series of data?

x = [2,4,6,NaN,NaN; 2,4,6,8,10; 2,4,6,8,NaN]; y = [3,5,7,NaN,NaN; 4,8,11,25,32; 7,10,15,17,NaN]; D = [3;5;7]; N = size(x, 1);...

3 Tage ago | 0

Answered

Colour code to find how big a function is

f = (y-x)./(1+x.^2); then https://www.mathworks.com/matlabcentral/fileexchange/39972-colormapline-color-changing-2d-or-3d-lin...

Colour code to find how big a function is

f = (y-x)./(1+x.^2); then https://www.mathworks.com/matlabcentral/fileexchange/39972-colormapline-color-changing-2d-or-3d-lin...

3 Tage ago | 0

| accepted

Answered

Error using trapz (line 47) Dimension argument must be a positive integer scalar within indexing range.

syms x; Symbolic drivative = diff(A(i,1)*x^2+A(i,2)*x+A(i,3)); Symbolic because x is symbolic. Ty = sqrt(1+(drivative^2)); ...

Error using trapz (line 47) Dimension argument must be a positive integer scalar within indexing range.

syms x; Symbolic drivative = diff(A(i,1)*x^2+A(i,2)*x+A(i,3)); Symbolic because x is symbolic. Ty = sqrt(1+(drivative^2)); ...

3 Tage ago | 0

Answered

How can I lower to 0 the base of a window signal?

subtract min(signal) from signal

How can I lower to 0 the base of a window signal?

subtract min(signal) from signal

3 Tage ago | 0

Answered

Writing cells to text file without double quotes

fprintf(fid, "%s\n", YourCell{:})

Writing cells to text file without double quotes

fprintf(fid, "%s\n", YourCell{:})

3 Tage ago | 0

| accepted

Answered

indexing error, out of index error

size = []; size is now an empty variable ndata = size(xdata,1) You are trying to index the empty variable

indexing error, out of index error

size = []; size is now an empty variable ndata = size(xdata,1) You are trying to index the empty variable

3 Tage ago | 0

Answered

Is it possible to bin/discretize multidimensional matrices?

bins = discretize(TheMatrix, Vector_of_Breakpoints); It does not matter how many entries are in Vector_of_Breakpoints as long a...

Is it possible to bin/discretize multidimensional matrices?

bins = discretize(TheMatrix, Vector_of_Breakpoints); It does not matter how many entries are in Vector_of_Breakpoints as long a...

3 Tage ago | 0

| accepted

Answered

Unrecognized function or variable 'gausswin'

eml_invariant is a function that would normally only be used during code generation. setdiff() and computer() do not contain any...

Unrecognized function or variable 'gausswin'

eml_invariant is a function that would normally only be used during code generation. setdiff() and computer() do not contain any...

3 Tage ago | 0

Answered

what is eml_invariant function ?

eml_invariant is a function that would normally only be used during code generation. setdiff() and computer() do not contain any...

what is eml_invariant function ?

eml_invariant is a function that would normally only be used during code generation. setdiff() and computer() do not contain any...

3 Tage ago | 0

Answered

Register COM Matlab Application TLB for certain version on when multiple versions installed

See https://www.mathworks.com/help/matlab/matlab_external/register-matlab-as-automation-server.html for R2020a and later.

Register COM Matlab Application TLB for certain version on when multiple versions installed

See https://www.mathworks.com/help/matlab/matlab_external/register-matlab-as-automation-server.html for R2020a and later.

3 Tage ago | 0

Answered

Why the function or variable A is not recognized?

You have not defined A in the base workspace, so it does not exist for you to be able to pass its value into the function.

Why the function or variable A is not recognized?

You have not defined A in the base workspace, so it does not exist for you to be able to pass its value into the function.

3 Tage ago | 0

| accepted

Answered

How can I find "evaluateFit" function of matlab?

https://github.com/Hassan1503/MATLAB-UDF/blob/main/evaluateFit.m has the source code.

How can I find "evaluateFit" function of matlab?

https://github.com/Hassan1503/MATLAB-UDF/blob/main/evaluateFit.m has the source code.

3 Tage ago | 0

| accepted

Answered

How to linear fit two y variables in same plot?

polyfit(x1, y1, 1)

How to linear fit two y variables in same plot?

polyfit(x1, y1, 1)

3 Tage ago | 0

| accepted

Answered

Is it possible to use Matlab to get expressions for the coefficients in polynomial regression? (I.e., not just constant coefficients)

For each equation divide both sides by the highest negative coefficient, k4(Xhat)/Xhat^(-2) = a8*Xhat^(-2)/Xhat^(-2) + etc ...

Is it possible to use Matlab to get expressions for the coefficients in polynomial regression? (I.e., not just constant coefficients)

For each equation divide both sides by the highest negative coefficient, k4(Xhat)/Xhat^(-2) = a8*Xhat^(-2)/Xhat^(-2) + etc ...

3 Tage ago | 0

Answered

Arduino using matlab GUI, The current sensor gives a value without connecting anything.

That is expected for any input line that is not pulled high or pulled low.

Arduino using matlab GUI, The current sensor gives a value without connecting anything.

That is expected for any input line that is not pulled high or pulled low.

3 Tage ago | 0

Answered

Writing fitness function in multi objective GA

mobj = @(x) [fun1(x); fun2(x) ]

Writing fitness function in multi objective GA

mobj = @(x) [fun1(x); fun2(x) ]

3 Tage ago | 0

Answered

i can't save my plot as a png

You are cd to a directory that you do not have write access to. In particular you might be cd to the matlab installation directo...

i can't save my plot as a png

You are cd to a directory that you do not have write access to. In particular you might be cd to the matlab installation directo...

3 Tage ago | 0

| accepted

Answered

Getting - Matrix dimensions must agree, using surf

When you call surf(X, Y, Z) in your very old release, the number rows in Z must match the number of rows in Y and the number of ...

Getting - Matrix dimensions must agree, using surf

When you call surf(X, Y, Z) in your very old release, the number rows in Z must match the number of rows in Y and the number of ...

3 Tage ago | 0

Answered

Hello, our collaborator has installed Matlab Runtime v9.7, why he gets the error "Matlab.exe not found" ?

MATLAB Component Runtime is *only* used to execute programs compiled with MATLAB R2019b (and no other versions) . It is *not* MA...

Hello, our collaborator has installed Matlab Runtime v9.7, why he gets the error "Matlab.exe not found" ?

MATLAB Component Runtime is *only* used to execute programs compiled with MATLAB R2019b (and no other versions) . It is *not* MA...

3 Tage ago | 0