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

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 :)

Answer 1

[Diego Hens]

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

Answer 2

[KSSV]

USe this: https://www.mathworks.com/help/matlab/ref/stlwrite.html#d120e1182467

[Diego Hens]

Thanks for the quick reply.

I tryed it but it still doesn't work. It might be my fault though.

TR = triangulation(f,v) %f and v are already defined as F/2 and V/2. F and V I took directly
                        % from [F, V, N] = stlread('MyFile.stl');
stlwrite(TR,'tritext.stl','text')

I get the following error:

Error using triangulation

The input triangulation must contain index values. Entries with fractional parts are invalid.

Is the fact that I divided the faces and vertices a problem?

[KSSV]

You got nodal connectivity data and vertices. You can divide vertice coordinate data by 2, but you should not divide the connectivity data by 2. The connectivity data should be always intgers.

[Diego Hens]

Ok, thanks again. I still get an error though :/

>> Zahn1 = stlread('F.O. - 6 left up.stl');
[F, V, N] = stlread('F.O. - 6 left up.stl');
v = V/2;
TR = triangulation(F,v);
stlwrite(TR,'tritext.stl','text');

Error using fileparts (line 37)

Input must be a row vector of characters or string scalar.

Error in stlwrite (line 70)

path = fileparts(filename);

[Rik]

Can you attach your data? Unsuported file types must first be zipped before you can attach them.

[Diego Hens]

I have uploaded some other data, because I'm not sure if I may send the real data because of data protection regulation. But it doesn't work either. I have probably made a mistake somewhere in the code.

I want to thank you again for repeatedly taking the time to answer :)

Edit: The data file is a different one, but the error persists