how to draw a scketch with a curve equation??
how to draw a scketch with a curve equation??
(OP)
If I have an equation of a curve consider it a circle equation x^2+Y^2=r how can I draw it??
and if I have a coardinates of a curve like I have an excel sheet of X and Y how can I import it to the NX..
Thanks
and if I have a coardinates of a curve like I have an excel sheet of X and Y how can I import it to the NX..
Thanks





RE: how to draw a scketch with a curve equation??
For the attached example:
r = 1
t = 0
xt = sin(r*t*360)
yt = cos(r*t*360)
where r = the radius, 360 = degrees of a full circle, and t is variable tha NX evaluates from 0 to 1.
Then create a law curve (Insert>Curve>Law curve) where x and y are "by equation" using xt and yt, and z is constant (in this case 0).
RE: how to draw a scketch with a curve equation??
RE: how to draw a scketch with a curve equation??
The file should look something like this when opened in Notepad.
0 0 0
1 1 0
2 0 0
3 -1 0
4 0 0
RE: how to draw a scketch with a curve equation??
One example of this is where you might be given the .txt version of an .stl file (many modeling systems, including NX, provides the option to export these rapid-prototyping files as either binary or ASCII data) which can then be read by this new routine thus helping you to 'reverse-engineer' rapid-prototyping data into a set of 3D points which could them be used by the also newly enhanced NX 8.5 version of the 'Fit Surface' function that now accepts either a faceted model OR a 'cloud of points' to 'fit' a surface through.
John R. Baker, P.E.
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Siemens PLM Software Inc.
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Cypress, CA
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RE: how to draw a scketch with a curve equation??
xt = sqrt(r)*cos(t*360) and
yt = sqrt(r)*sin(t*360) ?
Suppose the reversal of sin & cos doesn't really matter for a circle, as long as it's consistant with your co-ordinate system but shouldn't the r be square-rooted to match the r in DiaaHamdy's equation? And the way you have it, with the r inside the sin/cos terms, changing the radius won't actually affect the size of the circle.
Realise this post isn't really about parametric equations of a circle, but just thought I should point it out anyway!
RE: how to draw a scketch with a curve equation??
RE: how to draw a scketch with a curve equation??
RE: how to draw a scketch with a curve equation??