| nsinc.d | Colocalization index of d-type | 
| nsinc.z | Colocalization index of z-type | 
| plot.colocal | Making scatter plots for signal proportions before and after d-type or z-type normalization | 
| summary.colocal | Summarizing the colocalization results | 
| twolines | A simulated 2-lines test data in 3D |