kopia lustrzana https://github.com/NanoVNA-Saver/nanovna-saver
82 wiersze
3.1 KiB
Python
82 wiersze
3.1 KiB
Python
# NanoVNASaver - a python program to view and export Touchstone data from a NanoVNA
|
|
# Copyright (C) 2019. Rune B. Broberg
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
import collections
|
|
from typing import List
|
|
Datapoint = collections.namedtuple('Datapoint', 'freq re im')
|
|
|
|
|
|
class Touchstone:
|
|
s11data : List[Datapoint] = []
|
|
s21data : List[Datapoint] = []
|
|
|
|
filename = ""
|
|
|
|
def __init__(self, filename):
|
|
self.filename = filename
|
|
|
|
def load(self):
|
|
self.s11data = []
|
|
self.s21data = []
|
|
try:
|
|
file = open(self.filename, "r")
|
|
|
|
lines = file.readlines()
|
|
parsed_header = False
|
|
for l in lines:
|
|
l = l.strip()
|
|
if l.startswith("!"):
|
|
continue
|
|
if l.startswith("#") and not parsed_header:
|
|
# Check that this is a valid header
|
|
if l == "# Hz S RI R 50":
|
|
parsed_header = True
|
|
continue
|
|
else:
|
|
# This is some other comment line
|
|
continue
|
|
if not parsed_header:
|
|
print("Warning: Read line without having read header: " + l)
|
|
continue
|
|
|
|
try:
|
|
if l.count(" ") > 2:
|
|
freq, re11, im11, re21, im21, _ = l.split(maxsplit=5)
|
|
freq = int(freq)
|
|
re11 = float(re11)
|
|
im11 = float(im11)
|
|
re21 = float(re21)
|
|
im21 = float(im21)
|
|
self.s11data.append(Datapoint(freq, re11, im11))
|
|
self.s21data.append(Datapoint(freq, re21, im21))
|
|
elif l.count(" ") == 2:
|
|
freq, re11, im11 = l.split()
|
|
freq = int(freq)
|
|
re11 = float(re11)
|
|
im11 = float(im11)
|
|
self.s11data.append(Datapoint(freq, re11, im11))
|
|
else:
|
|
print("Warning: Read a line with not enough values: " + l)
|
|
continue
|
|
except ValueError as e:
|
|
print("Error parsing line " + l + " : " + str(e))
|
|
|
|
file.close()
|
|
except IOError as e:
|
|
print("Failed to open " + self.filename)
|
|
return
|
|
|
|
def setFilename(self, filename):
|
|
self.filename = filename |