MATLAB: Create stl. file with [F,V,N] data

\n%fMATLABstlv

Hello,

I would like to create a stl. file with given data [F,V,N]. I have problems using the funtion stlwrite (https://de.mathworks.com/matlabcentral/fileexchange/20922-stlwrite-write-ascii-or-binary-stl-files). Can you help me?

My goal is to take the data of a given stl. file and tweek it (like multiplying the values of [F,V,N] times 2). Is this possible?

Thank you 🙂

Best Answer

The answer can also be found here: https://www.mathworks.com/matlabcentral/answers/577465-stl-error-too-many-output-arguments?s_tid=prof_contriblnk

Related Solutions

MATLAB: Stl – error too many output arguments

I found the solution thanks to a reddit user.

File2 = stlwrite(TR, 'file2.stl');

This line is wrong. Even if the library says the order is fine, it is not. It should be:

File2 = stlwrite('file2.stl', TR);

Now, to prove it yo can do the following:

[F, V, N] = stlread('FileBefore.stl'); % Notice that this line had a variable name File1 previously. 
                                       % That was wrong. stlread is a command like plot() and you can use
                                       % it alone or with [F, V, N] to get those values.
stlwrite('FileAfter.stl',F,V);         % You can just write the same file under another name to see that
                                       % it works. If you gave stlread a variable name (File2 for example)
                                       % you can use it here too.
                                       % Now if you change V by multiplying it by 2, it should work just fine

MATLAB: What does in the stlwrite command the optional argument SolidIndex exactly do

stlwrite(TR, filename) writes a triangulation TR to a binary STL file 'filename' in the order left to right. For example

P = [2.5 8.0; 6.5 8.0; 2.5 5.0; 6.5 5.0; 1.0 6.5; 8.0 6.5];
T = [5 3 1; 3 2 1; 3 4 2; 4 6 2];
TR = triangulation(T,P);
triplot(TR)
stlwrite(TR,'tritext.stl','text')

You can execute the above code, and open tritext.stl file. You can see that the order in which the triangles are defined in tritext.stl is from left to right as shown below

You can use 'SolidIndex' name-value pair to include a vector of identification.

stlwrite(TR,'tritext.stl','text','SolidIndex',[1 4 3 2])

You can replace the last line of previous example code with the above piece of code, and open tritext.stl file. You can see that the order in which the triangles are defined, is based on the 'SolidIndex' as shown below

Best Answer

Related Solutions

MATLAB: Stl – error too many output arguments

MATLAB: What does in the stlwrite command the optional argument SolidIndex exactly do

Related Question