Display negative value in Logarithmic axis

[NiantongDong]

What problem does this feature solve?

In real life, we can find some value that may break the limit of logarithmic value. In the current version, we cannot show any value in the log axis which is negative

What does the proposed API look like?

axis.min: negative

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[100pah]

What the graph like do you expect when the value is negative on logarithmic axis?

[NiantongDong]

What I want to do is to use the log1p y-axis to represent the certain stock return rate. The rate may be negative and keep going down. If I use type 'log' in echarts, it will not show any value less than 0. If I use type 'value', the graph is incorrect. The idea is that the rate is calculated by Math.log1p(x) and the y-axis value should also be calculated Math.exp(y) so that it can show the correct plot for each value. Here is an example graph I generated using Juptyer and matplotlib.

[github-actions]

This issue has been automatically marked as stale because it did not have recent activity. It will be closed in 7 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this issue.

[github-actions]

This issue has been automatically closed because it did not have recent activity. If this remains to be a problem with the latest version of Apache ECharts, please open a new issue and link this to it. Thanks!