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Alfonso


Universidad Politècnica de Valencia

Last seen: más de 4 años hace |  Con actividad desde 2018

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Finding the error/difference between two 3D objects
I am trying to find the difference or error between two 3D models. The "error" I am trying to find would be defined as the exist...

casi 6 años hace | 0 respuestas | 0

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Pregunta


Converting 3D to 2D cloud of points
I am trying to convert a set of data which is a cloud of points from 3D to 2D, I am using this code: % Function from 3D t...

casi 6 años hace | 1 respuesta | 0

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Respondida
How to choose a random value from an array?
Take a look at this answer <https://es.mathworks.com/matlabcentral/answers/48852-choose-elements-from-array-randomly>

casi 6 años hace | 0

Respondida
How can I make my values become positive?
% Example: 3x2 array myArray = [-1,-2;-3,2;-3,-4]; % Make all values in array positive myArray = abs(myArray); %...

casi 6 años hace | 0

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Pregunta


Set y axis of image in imshow at the bottom without flipping the image
At the moment when I display the image with imshow the y axis are logically set with the origin at the top. I would like to know...

casi 6 años hace | 1 respuesta | 0

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Pregunta


Effect of depth in an echocardiography when retreiving distances of a segmented region
I have an echocardiography image where I want to segment a region inside it. At the moment I have been able to segment the part ...

casi 6 años hace | 0 respuestas | 0

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Respondida
How can i reorder NxM matrix into a 1D array
Without looping you can do: b = [a(end,:), a(end-1,:), a(end-2,:)]; % 1D array b = 7 8 9 4 5 ...

casi 6 años hace | 0

Respondida
Extracting a file path from a .txt file
Attending to the title of your question, in order to extract the full path filename of a file: % Select the file you want...

casi 6 años hace | 0

Respondida
I want to get the image I got in a function in another function
Try using the user data to save/load variables in different functions: function selectImage_Callback(hObject, eventdata, ha...

casi 6 años hace | 0

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Respondida
how to bold only one axis?
Look at this example: % Only put in bold X axis plot(randn(100,1)); title('X axis in bold'); xlabel('X axis','fontweig...

casi 6 años hace | 1

Pregunta


Perfectly fitting an image on a pushbutton of my GUI
I have created a GUI where I have two pushbuttons, I have embedded an image on these pushbuttons, but as you can see there are t...

casi 6 años hace | 1 respuesta | 0

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respuesta

Respondida
How can I subtract 2 2D graphs made by vectors of different length?
If you want to quantify the "difference" between 2 datasets of different length, say dataset A with length 100 and dataset B wit...

casi 6 años hace | 2

Pregunta


Getting points with ginput from image and plotting simultaneously each selected point
I am trying to select an unlimited number of points from an image ([x,y] = ginput), and each time I select a point I want to plo...

casi 6 años hace | 1 respuesta | 0

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Pregunta


Passing a line through 2 determined points of a dataset automatically
I am trying to draw a line which cuts through approximately the middle of a cloud of points. The data sets have similar shape wi...

casi 6 años hace | 1 respuesta | 1

1

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Pregunta


Plot a line between 2 points and extend the line a determined distance
I am plotting a line between points: p1 and p2. Finally I want to extend this line a determined distance so it will still pass t...

casi 6 años hace | 2 respuestas | 0

2

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Respondida
delete rows in a table
Try this % define your table table_array = [1 2; 3 2; 4 0; 5 6; 1 0; 9 0]; % search index rows [index_row index_col] = f...

casi 6 años hace | 1

Respondida
I need to leave values in an array in blank. NaN problem
If you are saving all the water level values in an array 1xn or nx1 (a row or column vector) , you could delete the incorrect va...

casi 6 años hace | 0

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Respondida
How can I save 2D display view images of a 3D textured mesh from given view angles?
Take a look at this % 3D mesh (example) x = -2:0.25:2; y = x; [X,Y] = meshgrid(x); F = X.*exp(-X.^2-Y.^2); surf(X,Y,F)...

casi 6 años hace | 0

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Respondida
How to read file using textscan
Take a look here <https://es.mathworks.com/help/matlab/ref/textscan.html#btg0kes> You could try: filename = 'myFile.txt'...

casi 6 años hace | 0

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Respondida
Extracting lines from outer image.
An option would be using bwboundaries which obtains all the boundaries in the image. the variable boundary outputs the amoun...

casi 6 años hace | 0

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Join dots in binary image.
Take a look here <https://es.mathworks.com/matlabcentral/answers/122882-connecting-points-in-binary-image>

casi 6 años hace | 0

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How to convert from pixels to mm and from mm to pixels?
In order to obtain the number of pixels of the yellow line which you know it's real distance is 11.72 mm in the vertebral column...

casi 6 años hace | 0

Respondida
How to evaluate the height and width of an object in BW image
Try this % Get boundary bw = bwboundaries(binary_img); bw = bw{1}; bw_x = bw(:, 2); %columns bw_y = bw(:, 1); %rows ...

casi 6 años hace | 0

Respondida
How to plot figure from a stored file?
In order to combine the three graphs in a unique figure you could use subplot. figure % First set of data subplot(1,3,1...

casi 6 años hace | 0

Respondida
Difference between {} and []
A = {0,1,2} constructs an array of class cell, basically this type of class can contain any type of data. For further informatio...

casi 6 años hace | 9

Pregunta


Problem with bwboundaries in image processing
I am trying to do the next things: Objective: Find centroid and major axis of a set of x,y coordinates by using bwboundari...

alrededor de 6 años hace | 3 respuestas | 0

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