Alfonso
Universidad Politècnica de Valencia
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Question
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...
plus de 7 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
plus de 7 ans il y a | 1 réponse | 0
1
réponseHow 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>
plus de 7 ans il y a | 0
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); %...
plus de 7 ans il y a | 0
| A accepté
Question
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...
plus de 7 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
plus de 7 ans il y a | 1 réponse | 0
0
réponseHow 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 ...
plus de 7 ans il y a | 0
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...
plus de 7 ans il y a | 0
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...
plus de 7 ans il y a | 0
| A accepté
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...
plus de 7 ans il y a | 1
Question
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...
plus de 7 ans il y a | 1 réponse | 0
1
réponseHow 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...
plus de 7 ans il y a | 2
Question
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...
plus de 7 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 7 ans il y a | 1 réponse | 1
1
réponseQuestion
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...
plus de 7 ans il y a | 2 réponses | 0
2
réponsesdelete 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...
plus de 7 ans il y a | 1
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...
plus de 7 ans il y a | 0
| A accepté
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)...
plus de 7 ans il y a | 0
| A accepté
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'...
plus de 7 ans il y a | 0
| A accepté
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...
plus de 7 ans il y a | 0
Join dots in binary image.
Take a look here <https://es.mathworks.com/matlabcentral/answers/122882-connecting-points-in-binary-image>
plus de 7 ans il y a | 0
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...
plus de 7 ans il y a | 0
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 ...
plus de 7 ans il y a | 0
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...
plus de 7 ans il y a | 0
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...
plus de 7 ans il y a | 9
Question
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...
plus de 7 ans il y a | 3 réponses | 0
