def showCoeffs(self):
"""
Create table from filter coeff dict
"""
coeffs = fb.fil[0]["ba"]
self.tblCoeff.setVisible(self.chkCoeffList.isChecked())
self.tblCoeff.setRowCount(max(np.shape(coeffs)))
self.tblCoeff.setColumnCount(2)
if self.DEBUG:
print("=====================\nInputCoeffs.showCoeffs")
print("Coeffs:\n", coeffs)
print("shape", np.shape(coeffs))
print("len", len(coeffs))
print("ndim", np.ndim(coeffs))
self.tblCoeff.setHorizontalHeaderLabels(["b", "a"])
for col in range(2):
for row in range(np.shape(coeffs)[1]):
item = self.tblCoeff.item(row, col)
# copy content of zpk to corresponding table field, rounding
# as specified and removing the brackets of complex arguments
if item:
item.setText(str(cround(coeffs[col][row])).strip("()"))
else:
self.tblCoeff.setItem(row, col, QtGui.QTableWidgetItem(str(cround(coeffs[col][row])).strip("()")))
self.tblCoeff.resizeColumnsToContents()
self.tblCoeff.resizeRowsToContents()
def showZPK(self):
"""
Create table from filter zpk dict, overwriting all previous entries.
"""
zpk = fb.fil[0]['zpk']
n_digits = int(self.spnRound.text())
self.ledGain.setVisible(self.chkPZList.isChecked())
self.lblGain.setVisible(self.chkPZList.isChecked())
self.tblPZ.setVisible(self.chkPZList.isChecked())
if self.chkNorm.isChecked():
[w, H] = freqz(fb.fil[0]['ba'][0], fb.fil[0]['ba'][1]) # (bb, aa)
self.Hmax_last = max(abs(H)) # store current max. filter gain
self.ledGain.setText(str(cround(zpk[2], n_digits)))
self.tblPZ.setVisible(self.chkPZList.isChecked())
self.tblPZ.setRowCount(max(len(zpk[0]),len(zpk[1])))
if self.DEBUG:
print("=====================\nInputPZ.showZPK")
print("ZPK:\n",zpk)
print ("shape", np.shape(zpk))
print ("len", len(zpk))
print("ndim", np.ndim(zpk))
self.tblPZ.setColumnCount(2)
self.tblPZ.setHorizontalHeaderLabels(["Z", "P"])
for col in range(2):
for row in range(len(zpk[col])):
if self.DEBUG: print("Len Row:", len(zpk[col]))
item = self.tblPZ.item(row, col)
# copy content of zpk to corresponding table field, rounding
# as specified and removing the brackets of complex arguments
if item: # does item exist?
item.setText(str(cround(zpk[col][row], n_digits)).strip('()'))
else: # no construct it
self.tblPZ.setItem(row,col,QtGui.QTableWidgetItem(
str(cround(zpk[col][row], n_digits)).strip('()')))
self.tblPZ.resizeColumnsToContents()
self.tblPZ.resizeRowsToContents()