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Scaling the Z Axis

 
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Mills



Joined: 07 Mar 2015
Posts: 6

PostPosted: Sat Mar 07, 2015 12:26 am    Post subject: Scaling the Z Axis Reply with quote

I am trying to plot the surface of a sphere.

The problem I'm having is the Z axis is not displayed using the same scale as the X and Y axes. The Z axis is about 1/2 the height of the X and Y axes for the same displacement. The result is an oblate spheroid (a football) rather than a sphere (a basketball).

How do I manually control the height of the Z axis?

If the equatorial diameter of the sphere is 6", I want the polar diameter to also be 6". Right now, Z is only about 3" (a 2:1 ratio).

Yes, the data set is correct.

Yes, the current display is technically correct but aesthetically unacceptable.

I have tried changing the extents for X and Y to no avail. I tried changing the aspect ratio of the window Dplot uses, to no avail. The software seems to rescale the Z axis whenever I change anything.
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DPlotAdmin
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Joined: 24 Jun 2003
Posts: 2310
Location: Vicksburg, Mississippi

PostPosted: Sat Mar 07, 2015 2:21 am    Post subject: Reply with quote

Select Options>Scatter Plot Options. Set all scale factors to 1.
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Mills



Joined: 07 Mar 2015
Posts: 6

PostPosted: Sat Mar 07, 2015 2:56 am    Post subject: Reply with quote

Thank you. I knew it was there somewhere, and I searched for a long time, I just did not see it.
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Mills



Joined: 07 Mar 2015
Posts: 6

PostPosted: Sat Mar 07, 2015 2:59 am    Post subject: Reply with quote

Thank you. I knew it was there somewhere, and I searched for a long time, I just did not see it.
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