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I have a table:

lengthvstemp={
  {3.15449,1.46395*10^-7}, 
  {0.623364,1.35011*10^-7},
  {0.250102,1.22539*10^-7},
  {0.124968, 9.6637*10^-8}, 
  {0.100013,.47764*10^-8}
 };

When I make ListLogLogPlot:

ListLogLogPlot[lengthvstemp]

It gives me a plot like this:

enter image description here

Apparently the y axis is not on log scale. Has any one had the same issue or known what's going on?

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  • $\begingroup$ John, the plot you showed is not what I obtain when trying to plot your data. Try adding PlotRange -> All to your plot and see if that improves your situation. $\endgroup$
    – MarcoB
    Commented Jun 3, 2015 at 22:54
  • $\begingroup$ yeah, that's an good idea, but not working for me. Maybe it's because of the version problem as Verbeia♦ said. $\endgroup$
    – Johneyishere
    Commented Jun 3, 2015 at 23:23

1 Answer 1

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This actually is a log scale on the vertical axis, if you look carefully. The major tick marks get a little closer together as the values increase, but it is a subtle difference.

However your data set seems to have tripped some differences in the way version 10 handles automatic plot ranges and tickmarks, relative to version 9.

This is what I get in version 10.1.

enter image description here

Here is the same data and commands in version 9.0.1

enter image description here

Both are from fresh sessions. For reasons I don't yet understand, my two Mathematicas are interpreting PlotRange -> Automatic as PlotRange -> Full, but yours isn't.

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  • $\begingroup$ Thanks. This looks good. But I have tried PlotRange -> Automatic / All / Full , and they all give the same result. I have Mathematica version 10.0, I am trying to update it to 10.1. $\endgroup$
    – Johneyishere
    Commented Jun 3, 2015 at 23:21
  • $\begingroup$ That is strange. Are you sure your data is what you posted here? $\endgroup$
    – Verbeia
    Commented Jun 3, 2015 at 23:21
  • $\begingroup$ I found something interesting. The graph I posted in the question is the plotting in a ".m" package. I just evaluated it in notebook, it gives me the same result as you posted for version 10.1. So if I work in a package it still can't plot it right. Any idea? $\endgroup$
    – Johneyishere
    Commented Jun 3, 2015 at 23:29
  • $\begingroup$ @Johneyishere Both in version 8.0.4 and 10.1 (under Win7) your code works correctly for me even if I import it from a package. $\endgroup$
    – Alexey Popkov
    Commented Jun 4, 2015 at 0:01
  • $\begingroup$ So problem solved. In the package evaluation to get the desired result, I have to specify the plot range on y axis. $\endgroup$
    – Johneyishere
    Commented Jun 4, 2015 at 1:43

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