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th20180
th20180
Level I

Zero on log scale y-axis?

Jul 18, 2016 01:33 PM (13344 views)

I applied overlay plot in JMP. My data ranges from 0 to 15990. I tried to plot my y-axis in log scale (not log-transform my data). Is there any way to set the minimum value of y-axis as zero? Thank you.

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ron_horne
Super User (Alumni) ron_horne
Super User (Alumni)
Solution

Re: Zero on log scale y-axis?

Jul 18, 2016 03:03 PM (14850 views)  |  Posted in reply to message from th20180 07-18-2016

Hi th20180​,

PMroz​  is correct by deffinition. Yet, there is a plumbers solution of changing zero values to something very small (0.00000001 for example) and then you will get all the values in the graph. Once more, this is not considered scientifically rigorous.

best,

ron

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pmroz
Super User pmroz
Super User

Re: Zero on log scale y-axis?

Jul 18, 2016 02:01 PM (13260 views)  |  Posted in reply to message from th20180 07-18-2016

Zero is undefined in the log scale.

ron_horne
Super User (Alumni) ron_horne
Super User (Alumni)
Solution

Re: Zero on log scale y-axis?

Jul 18, 2016 03:03 PM (14851 views)  |  Posted in reply to message from th20180 07-18-2016

Hi th20180​,

PMroz​  is correct by deffinition. Yet, there is a plumbers solution of changing zero values to something very small (0.00000001 for example) and then you will get all the values in the graph. Once more, this is not considered scientifically rigorous.

best,

ron

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