Plotting a circle with coordinate in excel

T

trustmeasfrnd

New Member
Joined
Oct 19, 2008
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32
i ve a circle with 18 nodes and i want to plot it in excel may be using chart.it can be done.
now suppose i plotted a circle of diameter 2m then i have 18 nodes equally divided on its perimeter.what if i want to reduce the circle diameter to 1.8m how to generate its coordinate any easy way to do this?
ABCD
node numberxyz

<colgroup><col style="width: 25pxpx"><col><col><col><col></colgroup><thead>
</thead><tbody>
[TD="align: center"]1[/TD]

[TD="align: center"]2[/TD]
[TD="align: right"]100[/TD]
[TD="align: right"]-1[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0[/TD]

[TD="align: center"]3[/TD]
[TD="align: right"]101[/TD]
[TD="align: right"]-0.9397[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]-0.342[/TD]

[TD="align: center"]4[/TD]
[TD="align: right"]102[/TD]
[TD="align: right"]-0.766[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]-0.6428[/TD]

[TD="align: center"]5[/TD]
[TD="align: right"]103[/TD]
[TD="align: right"]-0.5[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]-0.866[/TD]

[TD="align: center"]6[/TD]
[TD="align: right"]104[/TD]
[TD="align: right"]-0.1736[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]-0.9848[/TD]

[TD="align: center"]7[/TD]
[TD="align: right"]105[/TD]
[TD="align: right"]0.1736[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]-0.9848[/TD]

[TD="align: center"]8[/TD]
[TD="align: right"]106[/TD]
[TD="align: right"]0.5[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]-0.866[/TD]

[TD="align: center"]9[/TD]
[TD="align: right"]107[/TD]
[TD="align: right"]0.766[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]-0.6428[/TD]

[TD="align: center"]10[/TD]
[TD="align: right"]108[/TD]
[TD="align: right"]0.9397[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]-0.342[/TD]

[TD="align: center"]11[/TD]
[TD="align: right"]109[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0[/TD]

[TD="align: center"]12[/TD]
[TD="align: right"]110[/TD]
[TD="align: right"]0.9397[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0.342[/TD]

[TD="align: center"]13[/TD]
[TD="align: right"]111[/TD]
[TD="align: right"]0.766[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0.6428[/TD]

[TD="align: center"]14[/TD]
[TD="align: right"]112[/TD]
[TD="align: right"]0.5[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0.866[/TD]

[TD="align: center"]15[/TD]
[TD="align: right"]113[/TD]
[TD="align: right"]0.1736[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0.9848[/TD]

[TD="align: center"]16[/TD]
[TD="align: right"]114[/TD]
[TD="align: right"]-0.1736[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0.9848[/TD]

[TD="align: center"]17[/TD]
[TD="align: right"]115[/TD]
[TD="align: right"]-0.5[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0.866[/TD]

[TD="align: center"]18[/TD]
[TD="align: right"]116[/TD]
[TD="align: right"]-0.766[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0.6428[/TD]

[TD="align: center"]19[/TD]
[TD="align: right"]117[/TD]
[TD="align: right"]-0.9397[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]0.342[/TD]

</tbody>
Sheet1​

thanks and regards,
abhisekh
 

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Hi MickG,
i plotted it and it looks like circle but how to check whether it is correct or not i mean any ways to confirm that circle dia is reduced or not?
can you also tell how you come up with 0.9 value can it be generalised as formula.

thanks and regards,
abhisekh
 
Upvote 0
Not sure how helpful this is , but:-
NB:- 0.9 = 1.8/2.0

Below is the chart after size reduction i.e. Multiply "X" and "Z" by 0.9
The Actual circle size is only relative to the chart scales.
If you Plot the original data you will see, relative to the scales it has changed.

content


Modified Data series:-
NB: Extra (x-y) values added at bottom of data to complete circle !!!!
[TABLE="width: 158"]
<colgroup><col width="84" style="width: 63pt; mso-width-source: userset; mso-width-alt: 2986;"> <col width="126" style="width: 95pt; mso-width-source: userset; mso-width-alt: 4494;"> <tbody>[TR]
[TD="class: xl66, width: 84, bgcolor: transparent, align: right"]-0.9[/TD]
[TD="class: xl66, width: 126, bgcolor: transparent, align: right"]0[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.84573[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.3078[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.6894[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.57852[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.45[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.7794[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.15624[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.88632[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.15624[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.88632[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.45[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.7794[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.6894[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.57852[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.84573[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.3078[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.9[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.84573[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.3078[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.6894[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.57852[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.45[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.7794[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.15624[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.88632[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.15624[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.88632[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.45[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.7794[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.6894[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.57852[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.84573[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.3078[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.9[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0[/TD]
[/TR]
</tbody>[/TABLE]
 
Upvote 0
MickG said:
Not sure how helpful this is , but:-
NB:- 0.9 = 1.8/2.0

Below is the chart after size reduction i.e. Multiply "X" and "Z" by 0.9
The Actual circle size is only relative to the chart scales.
If you Plot the original data you will see, relative to the scales it has changed.

content


Modified Data series:-
NB: Extra (x-y) values added at bottom of data to complete circle !!!!
[TABLE="width: 158"]
<tbody>[TR]
[TD="class: xl66, width: 84, bgcolor: transparent, align: right"]-0.9[/TD]
[TD="class: xl66, width: 126, bgcolor: transparent, align: right"]0[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.84573[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.3078[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.6894[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.57852[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.45[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.7794[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.15624[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.88632[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.15624[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.88632[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.45[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.7794[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.6894[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.57852[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.84573[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.3078[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.9[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.84573[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.3078[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.6894[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.57852[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.45[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.7794[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]0.15624[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.88632[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.15624[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.88632[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.45[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.7794[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.6894[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.57852[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.84573[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0.3078[/TD]
[/TR]
[TR]
[TD="class: xl66, bgcolor: transparent, align: right"]-0.9[/TD]
[TD="class: xl66, bgcolor: transparent, align: right"]0[/TD]
[/TR]
</tbody>[/TABLE]
Click to expand...

thank you,
I checked it by plotting both in same chart which shows that diameter is changed and then i also calculated it for each points by calculating dia using extreme points which is basis for plotting circle (x1-x2)^2+(y1-y2)^2 = Dia^2.

perfect. how do you attache chart here? i m curious may be i don't know have to dig more.
thank you again
regards
 
Last edited:
Upvote 0
You're welcome

Paste chart:-
There's probably better ways but, I assign the code below to the chart:-
Code: 
Sub Chart1_Click()
Const strPath As String = "C:\Users\USER1\Desktop\cam.gif"
ActiveSheet.ChartObjects(Application.Caller).Chart.Export strPath
End Sub
This creates a file on the desktop , then I upload it to Box.com, where I open it, copy it and then paste back into Forum Page.
 
Upvote 0
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