How to plot 3D cylinder shapes in Mathematica?

AI Thread Summary
The discussion focuses on how to create cylinders in Mathematica using external data. The user seeks assistance in formatting their data file, which contains start and end points for the cylinders, and in adjusting the cylinder radius. A suggested approach involves using the command `Cylinder[{{x1, y1, z1}, {x2, y2, z2}}, r]` to specify the cylinder's dimensions. The user initially attempted to import data with `Partition[Import["Sites/IWS/testFile.txt", "Table"], 2]` but struggled to incorporate the radius parameter. The conversation emphasizes the need for clarity on the data format and the version of Mathematica being used to provide effective guidance.
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hey

How can i do that? Can anyone of you help me?greets
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MATHEMATICA
 
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You're posting in the Software section, so I assume you want to do it using a computer program, but you didn't tell us which one.

Also, how do you mean: plotting lines as cylinders? You mean you want to draw a cylinder of radius r along a line?
 
Sry. The data-file contains start and end-point of the cylinders (lines). I want to create a huge number of cylinders with external data.
How can I do that?
I don't know how to format the external data and how I have to do the command in mathematica.
 
I tired to do with
list = Partition[Import["Sites/IWS/testFile.txt", "Table"], 2]
Graphics3D[Cylinder
  • ]

    but in that way I am not able to change the cylinder-radius. How can I add this parameter in my list?
 
From the help,
Code:
Cylinder[{{Subscript[x, 1],Subscript[y, 1],Subscript[z, \
1]},{Subscript[x, 2],Subscript[y, 2],Subscript[z, 2]}},r]
represents a cylinder of radius r around the line from (Subscript[x, \
1],Subscript[y, 1],Subscript[z, 1]) to (Subscript[x, 2],Subscript[y, \
2],Subscript[z, 2]).

So you could simply use that command.

How you would convert to that from your raw data depends on the version of Mathematica (I suspect you are using 6.0+) and the precise format of the text file.
 

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