getNyquistSpatialFrequency: Get the Nyquist spatial frequency
Description
Get the Nyquist spatial frequency of an AFMImage calculated as following:
0.5 multiplied by the minimum between the horizontal scansize divided by the number of samples per line and the vertical scansize divided by the number of lines
Usage
getNyquistSpatialFrequency(AFMImage)
## S3 method for class 'AFMImage':
getNyquistSpatialFrequency(AFMImage)