Add new generator: PowerTermGenerator #53
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douglaswinter
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Can you rebase and add to the documentation (create |
c-mita
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Mar 9, 2018
| sign is determined by start, stop, focus and exponent parameters | ||
| """ | ||
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| def __init__(self, axis, units, start, stop, focus, exponent, divisor): |
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Should have alternate=False in the parameters.
The new generator produces a line of 1-D points according to the equation: y = A((x-xf)/a)^n + yf The parameter yf acts as a focus point around which the point density will be highest, decreasing as we move away from it. The generator takes the arguments axis, units, start, stop, focus, exponent (n), and divisor (a) - 'start' is used to find xf (where y(xf)=yf): xf = a * nth root(|start - focus|) - 'stop' determines the scan size: size = int(f^-1(stop)) - 'A' will be 1 or -1, determined from start, stop, focus and exponent arguments (the sign of 'a' is ignored) - If the exponent is even, it is assumed that we will pass through the focus point.
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c-mita
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| focus (float): Point of interest which will be most finely sampled | ||
| e.g. 7.112 (for Fe K edge) | ||
| exponent (int): If exponent is even, it is assumed we pass through the focus point. | ||
| divisor (float): Sign will be ignored. |
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alternate (bool) missing in argument documentation.
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The new generator produces a line of 1-D points according to the
equation:
y = A((x-xf)/a)^n + yf
The parameter yf acts as a focus point around which the point density
will be highest, decreasing as we move away from it.
The generator takes the arguments axis, units, start, stop, focus,
exponent (n), and divisor (a)
xf = a * nth root(|start - focus|)
size = int(f^-1(stop))
arguments (the sign of 'a' is ignored)
through the focus point.