private List <double> GenerateVGridFreqListLogarithmic(FreqListType t)
{
var result = new List <double>();
var itemInDecade = new double[] { 1, 2, 5 };
if (t == FreqListType.ForLine)
{
itemInDecade = new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
}
var freqStartEnd = FreqStartEnd();
double freq = freqStartEnd.Item1;
do
{
foreach (var item in itemInDecade)
{
var f = freq;
f *= item;
if (freqStartEnd.Item2 < f)
{
break;
}
result.Add(f);
}
freq *= 10;
} while (freq <= freqStartEnd.Item2);
return(result);
}
/// <summary>
/// グリッド縦棒の周波数のリストを生成。
/// </summary>
/// <returns></returns>
private List <double> GenerateVerticalGridFreqList(FreqListType t)
{
switch ((FreqScaleType)comboBoxFreqScale.SelectedIndex)
{
case FreqScaleType.Linear:
return(GenerateVGridFreqListLinear(t));
case FreqScaleType.Logarithmic:
return(GenerateVGridFreqListLogarithmic(t));
}
System.Diagnostics.Debug.Assert(false);
return(null);
}
private List <double> GenerateVGridFreqListLinear(FreqListType t)
{
var result = new List <double>();
double count = 10;
double interval = FreqStartEnd().Item2 / count;
double freq = 0;
for (int i = 0; i < count; ++i)
{
result.Add(freq);
freq += interval;
}
return(result);
}
