The “NR Intercell Interference Modeling” example appears to have been modified in R2021a which contains the “hNRMetricsVisualizer” helper function and hence is not present in MATLAB R2020b due to which you may be facing the error.
Similarly, the “hNRGridVisualizer” helper function is used in the “NR Intercell Interference Modeling” example in MATLAB R2021b.
I hope this answers your query!
