This is a simple tool for visualizing transfer function in 3D.
This tool is developed for educational demonstration purpose, not meant for extremely accurate scientific visualization.
Thi is a portable version, just download the zip file and unzip, there is a all-in-one executable file (.exe) which you may run directly.
The variable you use for the transfer function must be the Laplace variable 's'. The rule for filling in your symbolic transfer function follows the rule of sympy.