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#1
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Scatterplot Question
I have a few points, graphed as a scatterplot and the points are connected by
a smooth line. (For example: (0,0), (5, 6), (6, 8), (10, 20).) Since the points are connected by 3 different smooth lines, each line has a different slope/degree. Is there any way to have Excel determine the y-value of a point that is not a plotted point (anything besides x = 0, 5, 6, 10)? For example, based on the smooth line, can I ask Excel to find the y-value of x=1 or x=9? Thank you very much for your help! |
#2
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Scatterplot Question
Visit http://www.tushar-mehta.com/excel/ti...lue/index.html
Please come back if you have more questions -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Tmblweed" wrote in message ... I have a few points, graphed as a scatterplot and the points are connected by a smooth line. (For example: (0,0), (5, 6), (6, 8), (10, 20).) Since the points are connected by 3 different smooth lines, each line has a different slope/degree. Is there any way to have Excel determine the y-value of a point that is not a plotted point (anything besides x = 0, 5, 6, 10)? For example, based on the smooth line, can I ask Excel to find the y-value of x=1 or x=9? Thank you very much for your help! |
#3
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Scatterplot Question
Thank you for your reply. While I understand that this allows you to "read off" the value of the point, is there any way to ask Excel to compute that value? Also, while the website may help when the point plotted is in the same worksheet as the graph, I don't quite know how to drag the point to the graph, if the graph is on a separate worksheet. "Bernard Liengme" wrote: Visit http://www.tushar-mehta.com/excel/ti...lue/index.html Please come back if you have more questions -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Tmblweed" wrote in message ... I have a few points, graphed as a scatterplot and the points are connected by a smooth line. (For example: (0,0), (5, 6), (6, 8), (10, 20).) Since the points are connected by 3 different smooth lines, each line has a different slope/degree. Is there any way to have Excel determine the y-value of a point that is not a plotted point (anything besides x = 0, 5, 6, 10)? For example, based on the smooth line, can I ask Excel to find the y-value of x=1 or x=9? Thank you very much for your help! |
#4
Posted to microsoft.public.excel.charting
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Scatterplot Question
Do you know what is meant by curve fitting? If you find the equation that
fits the curve, simple math will let Excel compute Y given X. You data can be fitted to a 3rd order polynomial. See www.stfx.ca/people/bliengme/ExcelTips for the use of LINEST to get the parameters of a polynomial fit into cells. Then come back for more. On separate sheets: do you now how to use Window|New Window to display to sheets side by side? -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Tmblweed" wrote in message ... Thank you for your reply. While I understand that this allows you to "read off" the value of the point, is there any way to ask Excel to compute that value? Also, while the website may help when the point plotted is in the same worksheet as the graph, I don't quite know how to drag the point to the graph, if the graph is on a separate worksheet. "Bernard Liengme" wrote: Visit http://www.tushar-mehta.com/excel/ti...lue/index.html Please come back if you have more questions -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Tmblweed" wrote in message ... I have a few points, graphed as a scatterplot and the points are connected by a smooth line. (For example: (0,0), (5, 6), (6, 8), (10, 20).) Since the points are connected by 3 different smooth lines, each line has a different slope/degree. Is there any way to have Excel determine the y-value of a point that is not a plotted point (anything besides x = 0, 5, 6, 10)? For example, based on the smooth line, can I ask Excel to find the y-value of x=1 or x=9? Thank you very much for your help! |
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