Source code for NanoVNASaver.Analysis.VSWRAnalysis

#  NanoVNASaver
#
#  A python program to view and export Touchstone data from a NanoVNA
#  Copyright (C) 2019, 2020  Rune B. Broberg
#  Copyright (C) 2020,2021 NanoVNA-Saver Authors
#
#  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 logging

from PySide6 import QtWidgets

from NanoVNASaver import NanoVNASaver

from .. import AnalyticTools as At
from ..Formatting import format_frequency, format_vswr
from .Base import Analysis, QHLine

logger = logging.getLogger(__name__)


[docs] class VSWRAnalysis(Analysis): MAX_DIPS_SHOWN: int = 3 vswr_limit_value: float = 1.5 def __init__(self, app: NanoVNASaver) -> None: super().__init__(app) self._widget = QtWidgets.QWidget() self.layout = QtWidgets.QFormLayout() self._widget.setLayout(self.layout) self.input_vswr_limit = QtWidgets.QDoubleSpinBox() self.input_vswr_limit.setValue(VSWRAnalysis.vswr_limit_value) self.input_vswr_limit.setSingleStep(0.1) self.input_vswr_limit.setMinimum(1) self.input_vswr_limit.setMaximum(25) self.input_vswr_limit.setDecimals(2) self.checkbox_move_marker = QtWidgets.QCheckBox() self.layout.addRow(QtWidgets.QLabel("<b>Settings</b>")) self.layout.addRow("VSWR limit", self.input_vswr_limit) self.layout.addRow(QHLine()) self.results_label = QtWidgets.QLabel("<b>Results</b>") self.layout.addRow(self.results_label) self.minimums: list[int] = []
[docs] def runAnalysis(self) -> None: if not self.app.data.s11: return s11 = self.app.data.s11 data = [d.vswr for d in s11] threshold = self.input_vswr_limit.value() minima = sorted(At.minima(data, threshold), key=lambda i: data[i])[ : VSWRAnalysis.MAX_DIPS_SHOWN ] self.minimums = minima results_header = self.layout.indexOf(self.results_label) logger.debug( "Results start at %d, out of %d", results_header, self.layout.rowCount(), ) for _ in range(results_header, self.layout.rowCount()): self.layout.removeRow(self.layout.rowCount() - 1) if not minima: self.layout.addRow( QtWidgets.QLabel( f"No areas found with VSWR below {format_vswr(threshold)}." ) ) return for idx in minima: rng = At.take_from_idx(data, idx, lambda i: i[1] < threshold) begin, end = rng[0], rng[-1] self.layout.addRow( "Start", QtWidgets.QLabel(format_frequency(s11[begin].freq)) ) self.layout.addRow( "Minimum", QtWidgets.QLabel( f"{format_frequency(s11[idx].freq)}" f" ({round(s11[idx].vswr, 2)})" ), ) self.layout.addRow( "End", QtWidgets.QLabel(format_frequency(s11[end].freq)) ) self.layout.addRow( "Span", QtWidgets.QLabel( format_frequency((s11[end].freq - s11[begin].freq)) ), ) self.layout.addWidget(QHLine()) self.layout.removeRow(self.layout.rowCount() - 1)