The distribution of orientation, or texture, of a bulk sample is most readily determined by x-ray or neutron diffraction analysis. However, for inhomogeneously deformed or partly recrystallized material, it is often important to obtain such information from small regions of the sample, and in this case, electron beam techniques are used. The texture is usually measured by determining the orientations of many individual crystallites and then constructing a pole figure, inverse pole figure, or orientation distribution function.