Answered
finding longest length
The written description doesn't really describe what the example describes. The example returns the last true element from only...

9 months ago | 0

Answered
How to adjust the color bar in an image histogram?
If we are to answer the question directly: % you have an RGB image inpict = imread('peppers.png'); % imhist() cannot plot a...

9 months ago | 0

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how to represent the purple color by a string value
See also: https://www.mathworks.com/matlabcentral/fileexchange/48155-convert-between-rgb-and-color-names https://www.tutorialr...

9 months ago | 0

Answered
slicing 3D stl file to 2D series of image
If the goal is to produce raster images as output, and your slices are uniformly-distributed, then I suppose that one way would ...

9 months ago | 0

Answered
Create triangular mesh
In order to fill the hole, you need three vertices and you need them in the correct direction. Your edge segments aren't in a c...

9 months ago | 0

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How to trim the non-manifold triangle off the stl file?
I'd agree with Bruno on this. Especially if it's just a small fix on a single file, it's easier and quicker to just throw it in...

9 months ago | 0

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How to export 3D sphere at stl format
If you have gridded xyz data which you can feed to surf(), you can use surf2patch(...,'triangles'). % convert gridded data to t...

9 months ago | 0

Answered
Constrain a Delaunay Triangulations With a Surface?
The documentation for delaunayTriangulation() indicates that constrained triangulation is only supported for 2D inputs. If the ...

9 months ago | 0

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colored elevation map from STL file
A simple example unzip pringle_top.stl.zip T = stlread('pringle_top.stl'); trisurf(T); shading flat; view(10,33) axis equ...

9 months ago | 0

Answered
Can I get an .stl from a spreadsheet?
Surf2stl() expects gridded data unambiguously defining a surface. All you have is a list of scattered points. The way the data...

9 months ago | 0

Answered
How can i plot this pic by matlab ??
It looks like an upside-down representation of HSV with some random unknown extra line. I'm going to ignore it, since it looks ...

9 months ago | 0

Answered
Generating voxels for stl files
See also: https://www.mathworks.com/matlabcentral/answers/217754-stl-to-matlab-coordinates-conversion

10 months ago | 0

Answered
Cross sections of 3D surface (stl)
See also: https://www.mathworks.com/matlabcentral/answers/2175386-surface-area-at-given-hight-of-an-stl-file

10 months ago | 0

Answered
Extract information from .stl file
For example: unzip sphere_20.stl.zip % a sphere with a radius of 15 T = stlread('sphere_20.stl'); % get the bounding box...

10 months ago | 0

Answered
3d Model view
Since this was already in Meshlab, Filters Menu -> Normals Curvatures and Orientation ->Reorient all faces coherently. If you h...

10 months ago | 0

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why my 3D image is not extruded in 3D software?
The object height is clearly unit-scale. It's never changed. c = im2double(bw); % it's unit-scale. d = imgaussfilt3(c,4); %...

10 months ago | 0

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how to use stlwrite function options
This obviously refers to FEX #20922. Assuming that the data is gridded, such as could be given to surf(), then: [x y z] = sphe...

10 months ago | 0

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What we need to be doing is ignore subtraction of slopes of A.stl, which are too steep...
If I'm gonna guess, I might as well invest in it. unzip saddles.zip % these two files have directly correlated vertex lists ...

10 months ago | 0

Answered
Determine the maximum height and maximum width of the cross-sectional section from the stl file
Obtain the sectional geometry: https://www.mathworks.com/matlabcentral/answers/2175386-surface-area-at-given-hight-of-an-stl-fi...

10 months ago | 0

Answered
converting a .stl file of 3D polyhedron into a .mat file
If the goal is to convert the object into a volumetric image, then: https://www.mathworks.com/matlabcentral/answers/217754-stl-...

10 months ago | 0

Answered
How to read 3D mesh STL file
If your goal is to create a DiscreteGeometry object (for the PDE toolbox), then importGeometry() is what you'd use, but otherwis...

10 months ago | 0

Answered
Efficient algorithm for plotting edges detect in a triangular mesh
If you are reading your data from an STL and can represent it as a triangulation object, then this can be simplified tremendousl...

10 months ago | 0

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How to get the angles across a 3D surface?
I think this is what was meant. unzip pringle_top.stl.zip % for the forum % an STL file T = stlread('pringle_top.stl'); ...

10 months ago | 0

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How to obtain normals from faces?
The easy way would be to use the triangulation class, or since we're pre-R2013a, use TriRep(). The following example was tested...

10 months ago | 0

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CAD model cutting slices
Depending on what is meant by "cut a model" means: Find the 2D sectional geometry at a given altitude: https://www.mathworks.c...

10 months ago | 0

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How does stlread work?
It looks like you edited the variable names in the function, and then you called the function with no arguments. Don't mess wit...

10 months ago | 0

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stlread returns different numbers of vertices/points
As far as I know (and I might be wrong), there weren't STL reader/writer tools in the base toolbox until R2018b. At least that'...

10 months ago | 0

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Over 1000 faces when importing stl file to matlab
I thought about this one, and maybe there's an answer. Maybe we're not talking about "faces" as in getting individual triangles...

10 months ago | 0

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How can I produce a stl file from a 2d image?
This turned out to be more difficult than I expected. There's probably a better way, but eh. With the exception of the 'merge'...

10 months ago | 0

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Convert multiple 3D shapes into stl file (CAD).
The given code has two obvious problems. For one, the xyz data is being discarded for every loop iteration, so only the last se...

10 months ago | 0