diff options
Diffstat (limited to 'fiz/vaje/4/preseki.py')
| -rwxr-xr-x | fiz/vaje/4/preseki.py | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fiz/vaje/4/preseki.py b/fiz/vaje/4/preseki.py new file mode 100755 index 0000000..7a35c66 --- /dev/null +++ b/fiz/vaje/4/preseki.py @@ -0,0 +1,25 @@ +#!/usr/bin/python3 +from sys import stderr +from math import log +import numpy +import csv +t = [] +x = [] +v = [] +with open("nihanje.tsv") as file: + tsv = csv.reader(file, delimiter="\t") + i = -1 + for line in tsv: + if i == -1: + i = i + 1 + continue + t.append(float(line[0])) + x.append(float(line[1])) + v.append(float(line[2])) + i = i + 1 +zero_crossings_x = numpy.where(numpy.diff(numpy.sign(x)))[0] +zero_crossings_v = numpy.where(numpy.diff(numpy.sign(v)))[0] +print("v\tx\tt\tabsx\tln") +for i in range(len(zero_crossings_x)-1): + print(f"{v[zero_crossings_x[i]]}\t{x[zero_crossings_v[i]]}\t{t[zero_crossings_v[i]]}\t{abs(x[zero_crossings_v[i]])}\t{log(abs(x[zero_crossings_v[i]])/0.0943867)}") +print(f"za {len(zero_crossings_x/2)} nihajev je preteklo {t[zero_crossings_x[len(zero_crossings_x)-1]]-t[zero_crossings_x[0]]} sekund, zato je nihajni čas {(t[zero_crossings_x[len(zero_crossings_x)-1]]-t[zero_crossings_x[0]])/(len(zero_crossings_x)/2)}", file=stderr) |