How to output STL format flie

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LIN Hongbin
LIN Hongbin 2016-3-14
编辑： DGM 2025-10-8
I have a point matrix p whose size is 3x98065;the triangulation matrix t whose size is 3x196124 ; How to output the data as a STL model.Thank you.

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Walter Roberson
Walter Roberson 2016-3-14
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LIN Hongbin
LIN Hongbin 2016-3-14
I create a struct and solve it,Thanks
DGM
DGM 2025-7-16
编辑：DGM 2025-10-8
Since R2018b, MATLAB has built-in STL tools. You don't need to download anything.
stlread
stlwrite
For legacy versions needing third-party tools, I'd strongly recommend these tools over #20922. This explains why.
If you use #20922 or #36770 in a modern installation, you will shadow the inbuilt tools and likely cause problems for yourself unless you rename it.
FWIW, OP's face and vertex lists are transposed, so most tools that take F,V lists may have unexpected problems because of their orientation. That said, none of the versions of #20922 will produce that specific error message if given the inputs as described. They will produce different error messages. If someone did provide a set of inputs which could provoke the given error message, it wouldn't report the line numbers as described. However, because of a bug, FEX #36770 will produce that error message on that line number, when given only two arguments -- but again, not if they're transposed as described. Who knows what OP was actually doing.

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