Utilities

Shapes

circle(shape, radius[, shift, antialias])	Draw a circle
hexagon(shape, radius[, shift, rotate, ...])	Draw a hexagon
rectangle(shape, width, height[, shift, ...])	Draw a rectangle
spider(shape, width[, angle, shift, antialias])	Draw a spider

Array manipulation

boundary(x[, threshold])	Find bounding row and column indices of data within an array.
centroid(img)	Compute image centroid location.
pad(array, shape)	Zero-pad an array.
subarray(a, shape[, shift])	Extract a contiguous subarray from a larger array.
window(img[, shape, slice])	Extract an appropriately sized, potentially windowed array
rebin(img, factor)	Rebin an image by an integer factor.
rescale(img, scale[, shape, mask, order, ...])	Rescale an image by interpolation.

Miscellaneous

min_sampling(wave, z, du, shape, min_q)
pixelscale_nyquist(wave, f_number)	Compute the output plane sampling which is Nyquist sampled for intensity.
normalize_power(array[, power])	Normalizie the power in an array.
hex_segments(rings, seg_radius, seg_gap[, ...])	Draw a segmented aperture made up of hexagonal segments