Gwyscan library based adaptive scanning
Gwyscan is an open source library for creating non-regular scan paths, developed by Czech Metrology Institute and National Physical Library (UK). It provideds C and Labview interface to create variety of scan paths. More details on the library are here:
The path generated by Gwyscan library can be fed into the controller using set_scan_path_data and run_scan_path command. The generated positions during the scan then correspond to the path. As the output data are always containing the x, y and timestamp information, data can be rasterized in Gwyddion or processed directly using its XYZ data handling modules.
The image below shows measurement on a calibration grating performed using regular scan path and spiral scan path, both generated using Gwyscan functions.
Measurement was performed on a custom built setup using PI Hera XY table, open loop z piezo and optical lever based AFM pickup.