Difference between revisions of "Chart2/TrendLines"
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< Chart2
Tonygalmiche (Talk | contribs) (→Allow regression lines also for bar charts) |
Tonygalmiche (Talk | contribs) |
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== Add polynomial regression type == | == Add polynomial regression type == | ||
| − | [[Image: | + | [[Image:Chart2_TrendLines01.png]] |
* Different types of regression lines are already offered: linear regression, exponential regression. But a polynomial regression curve is still missing. A macro on this site offers a workaround (french only): | * Different types of regression lines are already offered: linear regression, exponential regression. But a polynomial regression curve is still missing. A macro on this site offers a workaround (french only): | ||
* http://oooconv.free.fr/fitoo/fitoo_fr.html | * http://oooconv.free.fr/fitoo/fitoo_fr.html | ||
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== Allow more than one regression line for one series == | == Allow more than one regression line for one series == | ||
| − | [[Image: | + | [[Image:Chart2_TrendLines02.png]] |
* covered in http://www.openoffice.org/issues/show_bug.cgi?id=64813 | * covered in http://www.openoffice.org/issues/show_bug.cgi?id=64813 | ||
== Extrapolating of trend lines == | == Extrapolating of trend lines == | ||
| − | [[Image: | + | [[Image:Chart2_TrendLines03.png]] |
* Trend lines should also allow extrapolating. If data ranges from 1 to 5 but that x axes range from -2 to 10, then the trend line should display from -2 to +10. | * Trend lines should also allow extrapolating. If data ranges from 1 to 5 but that x axes range from -2 to 10, then the trend line should display from -2 to +10. | ||
* In Excel, the setting is called forward forecast and backward forecast. | * In Excel, the setting is called forward forecast and backward forecast. | ||
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== Mean value for X and center of gravity == | == Mean value for X and center of gravity == | ||
| − | [[Image: | + | [[Image:Chart2_TrendLines04.png]] |
* Get the mean value not only for Y but also for X. A special symbol could mark the intersection point (the center of gravity). | * Get the mean value not only for Y but also for X. A special symbol could mark the intersection point (the center of gravity). | ||
* covered in http://www.openoffice.org/issues/show_bug.cgi?id=64816 | * covered in http://www.openoffice.org/issues/show_bug.cgi?id=64816 | ||
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== Trend line equation and coefficients == | == Trend line equation and coefficients == | ||
| − | [[Image: | + | [[Image:Chart2_TrendLines05.png]] |
* It's not possible to automatically add the equation of the trend line and the coefficients. | * It's not possible to automatically add the equation of the trend line and the coefficients. | ||
* This point is one of the last that block several schools migrations. | * This point is one of the last that block several schools migrations. | ||
| Line 37: | Line 36: | ||
== Error bar for X == | == Error bar for X == | ||
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* Error bar for X added to the existent Y one | * Error bar for X added to the existent Y one | ||
* covered in http://www.openoffice.org/issues/show_bug.cgi?id=42946 | * covered in http://www.openoffice.org/issues/show_bug.cgi?id=42946 | ||
== Data source for values or the error bar == | == Data source for values or the error bar == | ||
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* Obtain the value of the error bar from row or column in Calc | * Obtain the value of the error bar from row or column in Calc | ||
* covered in http://www.openoffice.org/issues/show_bug.cgi?id=366 | * covered in http://www.openoffice.org/issues/show_bug.cgi?id=366 | ||
Revision as of 14:52, 15 July 2007
Contents
Add polynomial regression type
- Different types of regression lines are already offered: linear regression, exponential regression. But a polynomial regression curve is still missing. A macro on this site offers a workaround (french only):
- http://oooconv.free.fr/fitoo/fitoo_fr.html
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=20819
Allow more than one regression line for one series
Extrapolating of trend lines
- Trend lines should also allow extrapolating. If data ranges from 1 to 5 but that x axes range from -2 to 10, then the trend line should display from -2 to +10.
- In Excel, the setting is called forward forecast and backward forecast.
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=5085
Mean value for X and center of gravity
- Get the mean value not only for Y but also for X. A special symbol could mark the intersection point (the center of gravity).
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=64816
Trend line equation and coefficients
- It's not possible to automatically add the equation of the trend line and the coefficients.
- This point is one of the last that block several schools migrations.
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=7998
Error bar for X
- Error bar for X added to the existent Y one
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=42946
Data source for values or the error bar
- Obtain the value of the error bar from row or column in Calc
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=366
