Community Profile # Pelajar UM

Last seen: 3 jours ago Active since 2021

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Question

pdist2 output is larger than expected
X= pdist2 (A,B, "chebychev") A and B both are 3000x3 arrays (x,y,z data). Why is X a 3000x3000 array rather than a 3000x1 ...

21 jours ago | 1 answer | 0

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colormapdata for trisurf?
For anyone else wondering, there's a very simple way to do this: F= faces and P=points from triangulation. Field is NX1 array. ...

27 jours ago | 0

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Question

colormapdata for trisurf?
Is there a function like colormapdata when plotting surfaces? I'm not referring to colormap which has to have 3 columns. Colorm...

28 jours ago | 1 answer | 0

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Question

Comparing arrays and getting the index of extra rows
There are two arrays: A with 8916x3 and B with 6571x3. Each 1x3 set represents xyz coordinates. Array A has some extra coordinat...

environ un mois ago | 1 answer | 0

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Question

Generating tetrahedral mesh from nodes
I have a series of nodes in space and I want to generate a tetrahedral mesh from them. This is how the accurate geometry looks...

environ un mois ago | 0 answers | 0

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Question

Removing rows from array using indices
I have a 2530x1 array named Rowidx containing the indices of rows that I want to remove from several other arrays that have diff...

environ un mois ago | 1 answer | 0

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Question

Finding the first instance of a value in an array
I have an array with many rows and many columns. I want to search the array row by row, find the first instance of a value that ...

environ un mois ago | 2 answers | 0

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Question

Very basic question: why is this not working? instead of Idx2=Idx(:,2) Idx3=Idx(:,3) Idx4=Idx(:,4) Idx5=Idx(:,5) I wrote ...

environ un mois ago | 1 answer | 0

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Question

knnsearch but with a constraint
I have an 11,000x3 array representing x,y,z coordinates of points in 3D space. I want to find the nearest neighbor using knnsear...

environ un mois ago | 1 answer | 0

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Question

Knnsearch: How to output disntace?
Here's the code. It basically finds the nearest sets of x,y,z points in the nodes array. Since the first column is the point its...

environ un mois ago | 1 answer | 0

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Question

meshquality: What does it represent and what is a good number?
According to the documentation: meshQuality evaluates the shape quality of mesh elements and returns numbers from 0 to 1 for ea...

environ un mois ago | 0 answers | 0

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Question

Converting 3D CAD files to stl?
Is there any function in MATLAB / code on exchange that could convert a universal 3D CAD format such as .stp or .igs to .stl? A...

environ 2 mois ago | 1 answer | 0

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Question

Fitnet: Out of memory error solved by transposing?
Here's the code: net_set = fitnet (4, 'trainlm'); my_ANN = train (net_set, input,output) Input and output both are 49736x3 ar...

environ 2 mois ago | 1 answer | 0

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Question

Sorting cell array based on distance
I have two cell arrays that contain information about the x,y,z coordinates for points in space. These data are random and do no...

environ 2 mois ago | 1 answer | 0

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Question

Exporting mesh generated by MATLAB to ASCII file?
I have generated a 3D mesh from a STL file using the PDE toolbox. How can I extract the mesh in terms of numerical outputs in an...

environ 2 mois ago | 1 answer | 0

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Question

Optimizing 1 equation with 7 variables
I have the following function: f= (a^2/x^2)-((a*(2*b))/x^2)+(2*(b^2)/y^2)+((1/x^2)-(2/y^2))*b^2+((2*(2*d)^2)/s^2)+(((y^2)^-1)-(...

3 mois ago | 2 answers | 0

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Question

Basic example of cellselectioncallback
I cannot find any basic example of cellselectioncallback in the documentation. I know that the indices represent rows and column...

3 mois ago | 1 answer | 0

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Question

So my app has an input library that is not bundled together with the app itself. I want to be able to share only specific inputs...

3 mois ago | 1 answer | 0

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Question

Applying format to values in UITable?
So one of the coefficients is very small (10^-7) and the table shows up to 4 decimal by default. So it ends up showing it as zer...

3 mois ago | 0 answers | 0

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Question

Load data into GUI editable fields from txt
I have an application with several inputs. Currently, I input the data manually in the GUI. I want to add a push button and lo...

3 mois ago | 0 answers | 0