Sliding FFT on an STM image of La5/8Ca3/8MnO3. (a) STM topography image of 16-unit cell sample of La5/8Ca3/8MnO3 grown on (001) SrTiO3. Sliding FFT was carried out, which consists of creating a window (white square in image) in which the FFT is captured, and subsequently sliding the window across the image a preset distance and recording the next FFT of the windowed area until the entire surface is covered to produce the data set. PCA of this data set was performed, and the first four components are shown in (b), with the respective Fourier loadings (c). Transforming the loadings to real space allows investigating the spatial distribution, and the first four real-space components are shown in (d).