private static StringBuilder AppendDefinedResultNode(StringBuilder builder, EquationNodeModel node)
{
if (!NeedsFormatting(node))
{
return(builder);
}
builder.Append("+[");
if (node.IsK1Enabled)
{
builder.AppendFormat("{0:0.0000;-0.0000}*{1}(k-1)", node.FactorK1, node.ShortName);
}
if (node.IsK2Enabled)
{
builder.AppendFormat("{2}{0:0.0000;-0.0000}*{1}(k-2)",
node.FactorK2,
node.ShortName,
node.IsK1Enabled ? "+" : string.Empty);
}
if (node.IsK3Enabled)
{
builder.AppendFormat("{2}{0:0.0000;-0.0000}*{1}(k-3)",
node.FactorK3,
node.ShortName,
node.IsK2Enabled ? "+" : string.Empty);
}
return(builder.Append("]"));
}
public static double GetForecast(this EquationNodeModel node)
{
var weight = node.IsResult ? 0.0 : node.IsVisible ? node.Weight : 1.0;
var f = node.Factor * weight ?? 0.0;
var f1 = node.FactorK1 * node.WeightK1 ?? 0.0;
var f2 = node.FactorK2 * node.WeightK2 ?? 0.0;
var f3 = node.FactorK3 * node.WeightK3 ?? 0.0;
return(f + f1 + f2 + f3);
}
private static StringBuilder AppendNode(this StringBuilder builder, EquationNodeModel node, int index)
{
return(node.IsResult
? (node.IsDefined
? AppendDefinedResultNode(builder, node)
: AppendUndefinedResultNode(builder, node, index))
: (node.IsDefined
? AppendDefinedParamNode(builder, node)
: AppendUndefinedParamNode(builder, node, index)));
}
private static StringBuilder AppendUndefinedParamNode(StringBuilder builder, EquationNodeModel node, int index)
{
builder.Append("[");
builder.AppendFormat("a({0},0)*{1}", index + 1, node.ShortName);
if (node.IsK1Enabled)
{
builder.AppendFormat("+a({0},1)*{1}(k-1)", index + 1, node.ShortName);
}
if (node.IsK2Enabled)
{
builder.AppendFormat("+a({0},2)*{1}(k-2)", index + 1, node.ShortName);
}
if (node.IsK3Enabled)
{
builder.AppendFormat("+a({0},3)*{1}(k-3)", index + 1, node.ShortName);
}
return(builder.Append("]"));
}
private static StringBuilder AppendDefinedParamNode(StringBuilder builder, EquationNodeModel node)
{
if (node.IsVisible)
{
builder.Append("[");
builder.AppendFormat("{0:0.0000;-0.0000}*{1}", node.Factor, node.ShortName);
if (node.IsK1Enabled)
{
builder.AppendFormat("{0:+0.0000;-0.0000}*{1}(k-1)", node.FactorK1, node.ShortName);
}
if (node.IsK2Enabled)
{
builder.AppendFormat("{0:+0.0000;-0.0000}*{1}(k-2)", node.FactorK2, node.ShortName);
}
if (node.IsK3Enabled)
{
builder.AppendFormat("{0:+0.0000;-0.0000}*{1}(k-3)", node.FactorK3, node.ShortName);
}
return(builder.Append("]"));
}
return(builder.AppendFormat("{0:0.0000;-0.0000}", node.Factor));
}
private static StringBuilder AppendUndefinedResultNode(StringBuilder builder, EquationNodeModel node, int index)
{
if (!NeedsFormatting(node))
{
return(builder);
}
builder.Append("+[");
if (node.IsK1Enabled)
{
builder.AppendFormat("a({0},1)*{1}(k-1)", index + 1, node.ShortName);
}
if (node.IsK2Enabled)
{
builder.AppendFormat("{2}a({0},2)*{1}(k-2)",
index + 1,
node.ShortName,
node.IsK1Enabled ? "+" : string.Empty);
}
if (node.IsK3Enabled)
{
builder.AppendFormat("{2}a({0},3)*{1}(k-3)",
index + 1,
node.ShortName,
node.IsK2Enabled ? "+" : string.Empty);
}
return(builder.Append("]"));
}
private static bool NeedsFormatting(EquationNodeModel node)
{
return(node.IsK1Enabled || node.IsK2Enabled || node.IsK3Enabled);
}
