Function inside LogPlot has random offset when using custom working precision

Asked Mar 11 '16 at 20:16

Active Mar 11 '16 at 20:43

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I am seeing a strange behavior when using a custom working precision in a LogPlot or LogLogPlot. Let's take the most simple example of plotting x for x in [0.1,1].

LogLogPlot with default working precision gives the correct result
```
LogLogPlot[x, {x, 0.1, 1}]
```

Plot with WorkingPrecision=60 gives the correct result
```
Plot[x, {x, 0.1, 1}, WorkingPrecision -> 60]
```

LogLogPlot with WorkingPrecision=60 gives a wrong artificial offset of 1
```
LogLogPlot[x, {x, 0.1, 1}, WorkingPrecision -> 60]
```

If I add +n to the function (i.e., plotting x+n, the offset increases to e^n:
```
LogLogPlot[x + Log[100], {x, 0.1, 1}, WorkingPrecision -> 60]
```

Is this a known behavior? Am I doing something wrong?

edited Mar 11 '16 at 20:43

asked Mar 11 '16 at 20:16

Felix

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known bug : http://mathematica.stackexchange.com/q/15628/2079 – george2079 Mar 11 '16 at 20:27
Since version 7.0? Can't be so difficult to fix.. Thanks anyways – Felix Mar 11 '16 at 20:33

Function inside LogPlot has random offset when using custom working precision

0 Answers0