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...

2 years ago | 0 answers | 0

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...

2 years ago | 1 answer | 0

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 ...

2 years ago | 2 answers | 0

Question

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

2 years ago | 1 answer | 0

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...

2 years ago | 1 answer | 0

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...

2 years ago | 1 answer | 0

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...

2 years ago | 0 answers | 0

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...

2 years ago | 1 answer | 0

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...

2 years ago | 1 answer | 0

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...

2 years ago | 1 answer | 0

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...

2 years ago | 1 answer | 0

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)-(...

2 years ago | 2 answers | 0

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...

2 years ago | 1 answer | 0

Question

Standalone application cannot read p-code?
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...

2 years ago | 1 answer | 0

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...

2 years ago | 0 answers | 0

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...

2 years ago | 0 answers | 0

Question

How to use ~= operator as constraint function?
I have a function called "error" that I want to minimize with initial X0 = 1.34. The definition is: function error = objectiveF...

2 years ago | 3 answers | 0