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# Jan

Last seen: Today 2009 年からアクティブ

It is easier to solve a problem than to guess, what the problem is. Questions about FileExchange submissions are welcome - get my address from the code. I do not answer mails concerning questions in the forum.

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How to check that these points formulate flat plane(on the same plane)?
P1 = [396326796.725069,-205153846.153846,0,0,0,0]; P2 = [-205153846.153846,396326796.725069,-205153846.153846,0,0,0]; P3 = [0,...

Monod nonlinear regression solved with Ode45
A guess: You call the function ParameterJack with 2 inputs: w=ParameterJack(ps,t); But the function requires 5: function dCdt...

How to plot a variable increasing in a for loop
If the plot should be expanded in each iteration, move the plot command inside the loop: axes('NextPlot', 'add'); % As hold('o...

How I can rotate cube the way that front plane will be come the top plane?
Use permute(planes, [2,1,3]) to move the 3D coordinates to the first dimension. Move the center of the body to the origin (or t...

Style in Matlab functions
I use the upper/lower case of the default setting: h = figure; set(h) The documentation explains, that the names and values a...

Arrays have incompatible sizes for this operation.
If you use a normal function instead of an anonymous function, you can use the debugger easily. function y = funy(r,theta,phi) ...

I keep getting "Error using / Arguments must be numeric, char, or logical. " in bayesopt.
Anonymous functions are compact, but less useful for debugging. Use a normal function instead: fxc = @yourFcn; xvar = optimiz...

1日 前 | 0

How to add values in coloumn with corresponding of logical array?
Start from the end: s = 0; for k = size(Event, 1):-1:1 if Event(k, 10) % You can omit the == 1 s = s + Event(k,...

1日 前 | 0

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Error using horzcat Dimensions of arrays.
num2str(x) replies a CHAR matrix, if x contains several rows: a = num2str(rand(2)) You cannot concatenate a CHAR vector and a ...

1日 前 | 0

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Set 2 structure fields to be the same result when 1 is a function call within a structure element
You can use memoize or a simple tool like here: https://www.mathworks.com/matlabcentral/answers/1892960-memoize-save-restore-cac...

1日 前 | 0

Round values to specific number
The colon operator creates a vector from the 1st argument in steps of the 2nd argument until the 3rd argument, but it does not i...

1日 前 | 0

Opposite command of strfind?
No, strfind does not replie true for any inputs. It replies the indices of found matchs. Maybe you mean: a = "Milano"; b = "M...

1日 前 | 0

Error Using *. Matrix Dimensions Must Agree
The error message is clear: The dimension of the operators do not match. We cannot run your code (posted as screenshot unfortuna...

1日 前 | 0

After set the path of "mosek", the files still can't work. (macOS)
Obviously the step "when i add the path to MATLAB" is not successful. So please post, how you do this. Remember that the path i...

1日 前 | 0

Compiled code to use str2func to call an application (mlapp file) fails while the same code works in the MATLAB environment
A bold guess: Is HBCPlot() included in the compiled application? If its name is hidden, Matlab cannot guess, that it has to be i...

1日 前 | 0

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short way to bar plot a discretize vector?
A = rand(1, 100); edges = linspace(0, 1, 6); dsc = discretize(A, edges); result = accumarray(dsc(:), A(:)); % Default ...

1日 前 | 0

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String convertion to date
a = '16deNoviembredel2017'; b = '20:56:14'; dt_event = datetime([a,b], 'Locale', 'es_ES', ... 'InputFormat', 'dd''de''MMM...

1日 前 | 1

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Output of values via a callback function
Callbacks do not have an output. Store obtained data in the UserData or ApplicationData of the calling object.

1日 前 | 1

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I have been trying to fix the problem of this code but unfortunately It keep saying ERORR on line 71 which is [y= dfl(xo)\fl(xo)]. Need to help?
"Unrecognized function or variable 'dfl'." - The error message seems to be clear: The expression "dfl" is unknown. Do you expect...

1日 前 | 0

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Out of memory error in Matlab and How to solve it?
Of course an out-of-memory problem is solved, if more RAM is available. But if the equation is stiff, this solution is of tempor...

3日 前 | 0

convert 1x20 double struct into a vector containing 20 values
With wild guessing: S.y = rand(1, 20); % Is this equivalent to your struct? plot(S.y); % Is this the way your get a ...

7日 前 | 0

load a large text file and split it after a specific character
S = readlines('YourFile.txt'); ind = [find(startsWith(S, '\$')); numel(S) + 1]; % [EDITED, readlines reply column vector] n ...

7日 前 | 0

How to break data in to groups using while loop?
matrix = [1 50 60 70 50 40; ... 2 NaN 10 20 10 10; ... 3 NaN 20 NaN NaN NaN; ... 1 NaN 60 30 40...

7日 前 | 0

Attempt to grow array along ambiguous dimension. it happens when N,M are smaller then the total of A,B. can I make my code work for any value of N,M? if so how would I do that
Some simplifications: Use numel(C) instead of length(C(:)). C(1:end) is exactly the same as C. The values to not matter the ...

7日 前 | 1

No, the loops do run run infinitely. They are only slow. Check this with displaying a loop counter. Use the profile to find the...

7日 前 | 0

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Is it possible to display text in the console using latex expressions ?
LaTeX is not an option in the command window. Using Unicode characters works for some fonts, but fails with other font. The res...

7日 前 | 0

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how do i join cell array strings for plotting
Dicide to use a better input format. Either a cell string: C = {'abc\_111', 'def\_111', 'ghi\_111'; ... 'abc\_123', 'abc\...

7日 前 | 0

How to find the longest distance normal to line from the dataplot?
If you rotate the X and Y coordinates of the graph such that the connection between start and end point is parallel the X axis, ...

8日 前 | 0

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Automating length with reshaping, and using reshape to loop through data.
See reshape - simply use [] for the free dimension to be adjusted automatically: tt = reshape(t, 3, []).' Note: While ' is the...

9日 前 | 0

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error described on the command window does not appear on code analyzer
The code analyzer shows typing errors and other static problems. The error message you get is a run-time problem, which occurs ...

10日 前 | 0