When I click on the Log icon to log my axis nothing happens.

A: It is not possible to display a log axis on a plot if the data being plotted contains 0, negative or text values.  When you click on the Log icon and nothing happens check the bottom left hand corner of the status bar and if this is the problem you should see a red message in the bottom left hand corner of the screen which says “Unable of Log zero, negative or text data”.

To replace 0 or negative values in your data use the Validate>Data Doctor utility.

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