when I perform "map to surface" function, why there are gaps between the output curves? - Grasshopper
![Grasshopper optimization algorithm for optimal load frequency control considering Predictive Functional Modified PID controller in restructured multi-resource multi-area power system with Redox Flow Battery units - ScienceDirect Grasshopper optimization algorithm for optimal load frequency control considering Predictive Functional Modified PID controller in restructured multi-resource multi-area power system with Redox Flow Battery units - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0967066119300796-gr18.jpg)
Grasshopper optimization algorithm for optimal load frequency control considering Predictive Functional Modified PID controller in restructured multi-resource multi-area power system with Redox Flow Battery units - ScienceDirect
![Grasshopper optimization algorithm for optimal load frequency control considering Predictive Functional Modified PID controller in restructured multi-resource multi-area power system with Redox Flow Battery units - ScienceDirect Grasshopper optimization algorithm for optimal load frequency control considering Predictive Functional Modified PID controller in restructured multi-resource multi-area power system with Redox Flow Battery units - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0967066119300796-gr12.jpg)