Answered
image axes modification/ pixel extension
You could use repelem to do this. Say that you have a matrix with 5 rows and 8 columns: Idx = reshape(1:5*8,5,8) And we want t...

2 years ago | 0

Answered
How to color the region between the cyan, black and blue curves
@Atom, i believe this is related to my previous answer, if the patch method was not suitable you can augment the question there ...

2 years ago | 0

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Answered
connect nodes (coordinates of a matrix rx3) with a line
i guess this is related to Sorting of points (2D) clockwise with respect to the center of gravity - MATLAB Answers - MATLAB Cent...

2 years ago | 1

Answered
Sorting of points (2D) clockwise with respect to the center of gravity
Edit: modified the code after the OP added data... The sort trick with the angle won't work due to the shape of the curve. Belo...

2 years ago | 0

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Answered
fsolve with writting automatically equations
Please try to avoid asking the same problems in many different questions. This makes it difficult for other people to track ting...

2 years ago | 0

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Answered
remove brace indexing from 1x1 matrix
I would recommand to read the text file into a string array, this will ease the conversion into function. See below for a demons...

2 years ago | 0

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Answered
sprintf loop for writing equations
There is no need for the sprintf function, you can store the equations direclty into an string array. See below for an example. ...

2 years ago | 1

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Answered
Customize Colormap with unequal range of colors.
% first create some plot data, we use the matlab peaks as example [X,Y,Z] = peaks(100); % rescale the Z values so that they ...

2 years ago | 0

Answered
Find area of a polygon portion of an Image (Code generatable code)
For such a shape, you could determine the area via a set of triangles. Insert a new temporary point in the center of the shape. ...

2 years ago | 0

Answered
Comparison between 3D maps
Hello, you could use the scatter function to plot a sphere for the values that are true. Note, you need to use the ind2sub funct...

2 years ago | 1

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Answered
Arc travel of a line in 3D space.
Hi, if I understand you correclty you want to verify the distance between two positions of the point and prefferbaly have it con...

2 years ago | 0

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Answered
Sum specific dimension in matrix
Hello, in the demo code below you can find some comments and a procedure on how to get the indexes, extract the data and sum ove...

2 years ago | 0

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Answered
How to shift a fitted curve such that it would coincide on some point
Hi @Salma fathi, you can evaluate the fitted curve using the feval function. Below I provided a demonstration on how you could s...

2 years ago | 0

Answered
How to separately color regions R1, R2, R3, R4 in the 1st quadrant of (delta,theta) plane
Hi, below i demonstrated how to fill in the region using the patch command. % evaluate the function to set up the grid points ...

2 years ago | 0

Answered
I need to run a surface diagram for variables using any 2 parameters. The following is the code for 2D plots. Please help me to run surf plot in MATLAB.
Hi see below for some comments in the code on how to set the dimmensions to call the surf command. options = odeset('RelTol',1e...

2 years ago | 1

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Answered
rotate the coordinates plotted with plot3 without changing the axes
Hi, in the code below I added some comments to demonstrate how you can rotate the curve. imageArray = imread("fig_A.png"); bin...

2 years ago | 0

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Answered
How can we move an object from A to B and then return it to the same psition which is A ?
I tried to made a commented example, hope it helps % initial poistion at x = -50 m and y = 50 m oldPosition = [-50; 50]; % ...

2 years ago | 0

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Answered
How to sort a part of a given array?
Hi, below you can find some example code to demonstrate how to sort the first 'nSort' elements of a given vector. % create a ve...

2 years ago | 0

Answered
Using 'for loop' to plot
It's not really clear why you would like to use a loop since the vectorized method is a lot cleaner from a code perspective. How...

2 years ago | 0

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Answered
How to create a scatter plot with multiple data
Hello, see below for a demonstation on how to make the scatter plot. Note that it uses a 'crude' way to define the dates, proba...

2 years ago | 0

Answered
finding the distance between two points
To identify the distances between the nodes of a segment you first need to identify the nodes that make up that segment. Once yo...

2 years ago | 0

Answered
How to calculate repeated calculation using LOOP?
Note that you can add data (e.g. a .mat file) to your question using the paperclip symbol. Without it is is difficult to validat...

2 years ago | 0

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Answered
Creating rainbow coloured plots in 3d
This can be done with the patch command, see below for a demonstration numPoints = 100; % create a random line Grid = zeros...

2 years ago | 0

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What are the obs values in this spherical surface equation?
I added some comments in the code below. % define the center of the sphere (i.e. the location of the centroid of the sphere) c...

2 years ago | 3

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Answered
How to automatically run all matlab files in a folder
something like this should work folder = 'YourFolder'; mfiles = dir(fullfile(folder, '*.m')); % loop over the files for k ...

2 years ago | 1

Answered
How do I plot the relative error for each iteration vs. iteration number?
Hey, you need to save the value in order to plot it. I added an extra variable (ea_plot) to achieve this, see below. A = [4 1 2...

2 years ago | 1

Answered
Periodically fill scatter3
you can use the 'hold on' command to preserve the figure and add information to it, see below for an example % create an empty ...

2 years ago | 0

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Answered
How do I create a matrix from another matrix excluding values?
Hi, see below for a two step procedure to do this. Example = [ 5 0 2022 820 7 1 820; 5 1 2022 813 4 9 805; 5 2 2022...

2 years ago | 0

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Answered
For loop only working/filling cell array for half of data
One issue was the reuse of the variable name "x" directly after entering the loop, you overwrite your orinal data by removing el...

2 years ago | 0

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Answered
How to pull data from a table from a file and use as a string or cell.
Hi Terry, See below for one example on how to do this. This idea is to first use some logic operators to determine if the code ...

2 years ago | 0

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