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feat: add format quality factor

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TT 2020-06-16 09:23:10 +09:00
parent 64de4d5d87
commit bc1b57c3f0
4 changed files with 31 additions and 9 deletions
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19
plot.c
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@ -491,6 +491,14 @@ reactance(const float *v)
return zi;
}
static float
qualityfactor(const float *v)
{
float i = 2*v[1];
float r = (1+v[0])*(1-v[0]) - v[1]*v[1];
return fabs(i / r);
}
static void
cartesian_scale(float re, float im, int *xp, int *yp, float scale)
{
@ -567,6 +575,9 @@ trace_into_index(int t, int i, float array[POINTS_COUNT][2])
case TRC_X:
v-= reactance(coeff) * scale;
break;
case TRC_Q:
v-= qualityfactor(coeff) * scale;
break;
case TRC_SMITH:
//case TRC_ADMIT:
case TRC_POLAR:
@ -669,6 +680,10 @@ trace_get_value_string(int t, char *buf, int len, float array[POINTS_COUNT][2],
format = "%.2F"S_OHM;
v = gamma2reactance(coeff);
break;
case TRC_Q:
format = "%.1f";
v = qualityfactor(coeff);
break;
case TRC_SMITH:
format_smith_value(buf, len, coeff, frequencies[i]);
return;
@ -729,6 +744,10 @@ trace_get_value_string_delta(int t, char *buf, int len, float array[POINTS_COUNT
format = "%.2F"S_OHM;
v = gamma2reactance(coeff);
break;
case TRC_Q:
format = "%.1f";
v = qualityfactor(coeff);
break;
//case TRC_ADMIT:
case TRC_POLAR:
plot_printf(buf, len, "%.2f%+.2fj", coeff[0], coeff[1]);