si_wafer#
- kikuchipy.data.si_wafer(allow_download: bool = False, show_progressbar: bool | None = None, **kwargs) EBSD [source]#
EBSD dataset of (50, 50) patterns of (480, 480) pixels from a single crystal silicon wafer, acquired on a NORDIF UF-420 detector [Ånes et al., 2022].
The dataset was acquired in order to test various ways to calibrate projection centers (PCs), e.g. the moving-screen PC estimation technique [Hjelen et al., 1991]. The EBSD pattern in
silicon_ebsd_moving_screen_in()
is from this dataset.- Parameters:
- allow_download
Whether to allow downloading the dataset from the internet to the local cache with the pooch Python package. Default is
False
.- show_progressbar
Whether to show a progressbar when downloading. If not given, the value of
hyperspy.api.preferences.General.show_progressbar
is used.- **kwargs
Keyword arguments passed to
load()
.
- Returns:
ebsd_signal
EBSD signal.
See also
Notes
The dataset is hosted in the Zenodo repository https://doi.org/10.5281/zenodo.7491388 and comprises 311 MB as a zipped file and about 581 MB when unzipped. The zipped file is deleted after it is unzipped.
The dataset carries a CC BY 4.0 license.
Examples
>>> import kikuchipy as kp >>> s = kp.data.si_wafer(allow_download=True, lazy=True) >>> s <EBSD, title: Pattern, dimensions: (50, 50|480, 480)>