Wang Yanhua

Results 1 issues of Wang Yanhua

Fix direction of the axes

This fixes the direction of the axes of the phaseplot function **Before** ![before](https://user-images.githubusercontent.com/42966414/161369110-f63aa6a0-3f75-4e93-9658-9bc422aca1ab.png) **After** ![after](https://user-images.githubusercontent.com/42966414/161369133-eb7b4630-6aa7-46ab-a6b8-1d43d50802b0.png)