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fix : frequency mapping to x axis 

Signed-off-by: Vincenzo Petrolo <vincenzo@kernel-space.org>
This commit is contained in:
Vincenzo Petrolo 2021-05-10 10:39:53 +02:00
parent 11c1a03364
commit f20ff3268a
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1 changed files with 2 additions and 6 deletions
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8
Desktop_Interface/isodriver.cpp
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@ -639,13 +639,9 @@ QVector<double> isoDriver::getDFTAmplitude(QVector<double> input)
QVector<double> isoDriver::getFrequencies()
{
QVector<double> f(N/2+1,0);
double sample_rate = 375000;
double res = sample_rate/N;
double tot = 0.0;
for (int i = 0; i < (N+1)/2; i++) {
f[i] = tot;
tot += res;
f[i] += i;
}
return f;
}
@ -773,7 +769,7 @@ void isoDriver::frameActionGeneric(char CH1_mode, char CH2_mode)
axes->graph(1)->setData(f,amplitude);
}
/*N number of sam*/
axes->xAxis->setRange(0, N);
axes->xAxis->setRange(0, f.length());
axes->yAxis->setRange(100, 0);
} else {
axes->graph(0)->setData(x,CH1);