Zoomdata Version

Address line chart "cut-off" when using the logarithmic scale

Symptom

When changing a chart's setting to use the logarithmic scale instead, the user might notice that their line chart may "cut-off" and no longer display zeroes or negative numbers anymore. For example, Figure 1 shows a Line Chart with 'Line B' that has apparently been cut off:


Figure 1

Possible Cause/Resolution

This is by design and expected behavior. Mathematically speaking, the log of zero or a negative number is undefined. Thus, Zoomdata will skip zeros and negative numbers when a logarithmic scale is used.

Please keep in mind that the "log of 1" is actually zero. Thus, displaying zeroes or negative numbers as the value zero on a logarithmic scale would be a misrepresentation of data and not correct.