Source code for PDSim.misc.error_bar

from __future__ import print_function

from math import log10, isnan




def error_ascii_bar(val, tol, N=50, min_p=-5, max_p=2):

    assert log10(tol) > min_p

    base_string = list("||" + "." * N + "||")

    if isnan(val):
        return " XXX VAL is NAN XXX "

    # Add the bar for the tolerance
    i = int(N * (log10(tol) - min_p) / (max_p - min_p) + 1)
    base_string[i] = "|"

    # Add the value
    i = int(N * (log10(val) - min_p) / (max_p - min_p) + 1)
    # Constrain the value so that it is definitely in range
    i = max(1, i)
    i = min(i, len(base_string) - 2)

    base_string[i] = "@"

    base_string = "".join(base_string)

    return base_string



if __name__ == "__main__":
    print(error_ascii_bar(1, 1e-3))
    print(error_ascii_bar(0.5, 1e-3))
    print(error_ascii_bar(0.1, 1e-3))
    print(error_ascii_bar(0.0011, 1e-3))
    print(error_ascii_bar(1e-10, 1e-3))
    print(error_ascii_bar(1e10, 1e-3))