Exponential fit on both gnumeric and openoffice-calc are flawed for small values.
Bug #599534 reported by
jacobfe
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
libio-digest-perl (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
Description: Ubuntu 10.04 LTS
Release: 10.04
gnumeric:
openoffice.
For bothe of these applications the exponential fit is broken. Using the following data plot
A B
0.000568 0.22
0.001136 0.05
0.00170 0.02
0.000136 0.97
0.000329 0.42
Plot and add a trend-line. Make the trend-line exponential and you get a garbage fit. If you multiply column A by 4, the fit works. Multiply by 3 and it fails. It appears that the algorithm used for this type of trend-line is flawed and has limitations that do not occur in MS Excel.
affects: | ubuntu → libio-digest-perl (Ubuntu) |
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Confirmed for gnumeric. I'll have a look at this issue.