Community Profile # dbmn

Actif depuis 2016

Matlab afficionado working in the automotive sector

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measure diameter of circle
As KSSV and Adam suggested, you should already have most Information readily available when you were able to detect the circles ...

environ 6 ans il y a | 0

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How to remove single quotes around the string
In Matlab, Strings (and Substrings) begin and end with the ' character. See <https://de.mathworks.com/help/matlab/characters-and...

environ 6 ans il y a | 4

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grid non monotonic XYZ arrays
I assume you want to plot that data. Well the most obvious way would be to just plot the lines with plot3(Xout, Yout, Zo...

environ 6 ans il y a | 0

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Are arrowheads possible on primitive plots?
Instead of reinventing the wheel I suggest you look into the phasor diagrams on the file exchange and search for some inspiratio...

environ 6 ans il y a | 0

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is 'runmean' is compatible with Matlab16b? i have magnetic field data for hours. i want to get moving average of that. how can i do?
runmean is a function from the file exchange. But there is a whole Group of functions available from mathworks. You should ch...

environ 6 ans il y a | 0

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How to create a gridded matrix with N equally spaced points?
I would advise to use one of the following for the grid [X,Y] = meshgrid(x,y); % with x y being the vectors of your choice ...

environ 6 ans il y a | 0

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How to edit surf graph in MATLAB?
This should help you get started. I just added some lines to your code to make it look more like the old one hdl = surf(B);...

environ 6 ans il y a | 0

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My plot does not start at 0
The question is not really clear and multiple outcomes are possible. Maybe you could draw (into the image you posted, what you w...

environ 6 ans il y a | 1

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Unable to use mod function on cell array
you try to convert a int/double to a cell % Create random Variable A A=num2cell(rand(10,10)); % check if your c...

environ 6 ans il y a | 0

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how to find the equivalent resistance of two resistors in parallel and series
<https://de.mathworks.com/help/control/ref/parallel.html parallel> might not be the best function to use here. See more in the d...

environ 6 ans il y a | 0

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how to find optimize value with two variables
If I understand correctly, you have: x = f(dd); y = g(dd); j = f(dd) + 1/g(dd) = h(dd); which is a one dimensional...

environ 6 ans il y a | 0

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What is the matrix code for column vectors
This should do the trick using the ' for transpose new_matrix = [u', v', (u+v)']

environ 6 ans il y a | 0

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How can I delete/extract rows from a table with cell columns consisting of str and numeric values
The easiest way to extract the "pits" is to do the following % Convert your column type to a format called categorical %...

environ 6 ans il y a | 0

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Remove rows by time with datenum
assuming that A is your matrix with A(:,1) the column of your datenums, then simply do % Determine which rows to delete ...

environ 6 ans il y a | 0

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How can I interpolate
Try to include some of the following functions in your code numel(x) % This allows you to "count" the number of elements...

environ 6 ans il y a | 0

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How can i delete rows with zeros from a matrix and rebuild the matrix?
A not so easily readable solution would be the following % Create a zero vector to compare to a=zeros(1,size(E,2)-1...

environ 6 ans il y a | 0

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Comparison of two plots - experimental and model results
One thing you could do is to set both datasets on the same time-base f.ex. % Model Data x1, y1 % Experiment Data x2, y2 ...

environ 6 ans il y a | 0

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How to replace portion of data set with another?
One way to solve this would be by logical indexing (assuming both datasets have the same time increment) % Example data ...

environ 6 ans il y a | 0

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Acceleration vs Time plot
The error you described appears if you try to view the variable in the varible editor so * Suggestion 1: dont use the variabl...

environ 6 ans il y a | 0

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How to run matlab code in java / android
The toolbox "Matlab Coder" do might what you are looking for. This allows you to export code for a specific language. Be advised...

environ 6 ans il y a | 0

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find element in cell
An alternative to KSSVs solution would be this one liner b = a(cellfun(@(x) sum(x==3)>0, a));

environ 6 ans il y a | 1

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How to plot multiple Xaxis Label| Unit in Hour and Time of the day? Both XLabel at the bottom
You could do something like this: ax1 = gca; ax2 = axes('Position',ax1.Position,... 'XAxisLocation','top',... ...

environ 6 ans il y a | 0

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Replacing each array element with a series of values
One possible solution would be: 0. having T = [1 4 7]; 1. create a temporary matrix T_temp that looks like (th...

plus de 6 ans il y a | 0

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access the row and col of a matrix
2 Possibilities Easiest: row column A(2,3) Second possibility (by element count) A(8)

plus de 6 ans il y a | 0

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Calculate derivative with 3 matrices
What would you do if you only had 1 Dimension? You would do (y2-y1)/(x2-x1) with x2 being the nearest x to x1. Do exactly the...

plus de 6 ans il y a | 0

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Plot different curves in cycle for
You where almost correct. Just 2 small corrections: 1) "hold on" You added this line at the end of the script - this wont hel...

plus de 6 ans il y a | 1

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Applying function only to certain files in directory
The simplest solution is, when you know a priori what your files are called. In that case use wildcards with * listing = dir...

plus de 6 ans il y a | 1

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(MATLAB TRICK AND SHORTCUTS): I would like to rename all my variables within a script without do it manually one by one
There is a simple solution for this, although it is ugly. But it takes minimal time to adapt. *Old Function* function [o...

plus de 6 ans il y a | 0

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Minimization problem (FMINCON): I am unable to minimize my function: "Not enough input errors" and others
I think the solution might be in the way you created your function fun. if you check the documentation for fmincon it states ...

plus de 6 ans il y a | 0

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My 'From Workspace block' does the wrong value after 10 seconds
That is because your variables t only covers the range from 0.0 - 9.8s (checkout t(end)) So after 9.8s your "From Workspace" ...

plus de 6 ans il y a | 0