如何在Rate Of Change指标的Hline上添加可自定义对齐的文本？

以下是修改后的完整代码，实现了每条概率水平线的自定义文本输入和左/中/右对齐功能，所有配置项均已汉化：

//@version=5
indicator(title="带自定义文本的变动率指标(ROC)", shorttitle="ROC-自定义概率线", format=format.price, precision=2, timeframe="", timeframe_gaps=true)

// ROC核心计算参数
length = input.int(1, minval=1, title="计算周期")
source = input(close, title="数据源")
roc = 100 * (source - source[length])/source[length]
plot(roc, color=#2962FF, title="ROC曲线")

// -------------------------- 正区间概率线配置 --------------------------
// 50%概率线（+25%）
text_pos_50 = input.string("50% (+25%)", title="正50%区间文本", inline="pos50")
align_pos_50 = input.string("右", title="对齐方式", options=["左", "中", "右"], inline="pos50")
hline(0.5, color=#edde35, title="正50%概率线")
var label lbl_pos_50 = label.new(chart.right, 0.5, text_pos_50, color=color.new(color.white, 100), textcolor=#edde35, style=label.style_none)
label.set_text(lbl_pos_50, text_pos_50)
label.set_y(lbl_pos_50, 0.5)
label.set_x(lbl_pos_50, chart.left if align_pos_50 == "左" else chart.middle if align_pos_50 == "中" else chart.right)

// 75%概率线（+38%）
text_pos_75 = input.string("75% (+38%)", title="正75%区间文本", inline="pos75")
align_pos_75 = input.string("右", title="对齐方式", options=["左", "中", "右"], inline="pos75")
hline(1.0, color=#2950de, title="正75%概率线")
var label lbl_pos_75 = label.new(chart.right, 1.0, text_pos_75, color=color.new(color.white, 100), textcolor=#2950de, style=label.style_none)
label.set_text(lbl_pos_75, text_pos_75)
label.set_y(lbl_pos_75, 1.0)
label.set_x(lbl_pos_75, chart.left if align_pos_75 == "左" else chart.middle if align_pos_75 == "中" else chart.right)

// 95%概率线（+48%）
text_pos_95 = input.string("95% (+48%)", title="正95%区间文本", inline="pos95")
align_pos_95 = input.string("右", title="对齐方式", options=["左", "中", "右"], inline="pos95")
hline(2.5, color=#787B86, title="正95%概率线")
var label lbl_pos_95 = label.new(chart.right, 2.5, text_pos_95, color=color.new(color.white, 100), textcolor=#787B86, style=label.style_none)
label.set_text(lbl_pos_95, text_pos_95)
label.set_y(lbl_pos_95, 2.5)
label.set_x(lbl_pos_95, chart.left if align_pos_95 == "左" else chart.middle if align_pos_95 == "中" else chart.right)

// 98%概率线（+49%）
text_pos_98 = input.string("98% (+49%)", title="正98%区间文本", inline="pos98")
align_pos_98 = input.string("右", title="对齐方式", options=["左", "中", "右"], inline="pos98")
hline(3.5, color=#c73030, title="正98%概率线")
var label lbl_pos_98 = label.new(chart.right, 3.5, text_pos_98, color=color.new(color.white, 100), textcolor=#c73030, style=label.style_none)
label.set_text(lbl_pos_98, text_pos_98)
label.set_y(lbl_pos_98, 3.5)
label.set_x(lbl_pos_98, chart.left if align_pos_98 == "左" else chart.middle if align_pos_98 == "中" else chart.right)

// -------------------------- 负区间概率线配置 --------------------------
// 50%概率线（-25%）
text_neg_50 = input.string("50% (-25%)", title="负50%区间文本", inline="neg50")
align_neg_50 = input.string("右", title="对齐方式", options=["左", "中", "右"], inline="neg50")
hline(-0.5, color=#edde35, title="负50%概率线")
var label lbl_neg_50 = label.new(chart.right, -0.5, text_neg_50, color=color.new(color.white, 100), textcolor=#edde35, style=label.style_none)
label.set_text(lbl_neg_50, text_neg_50)
label.set_y(lbl_neg_50, -0.5)
label.set_x(lbl_neg_50, chart.left if align_neg_50 == "左" else chart.middle if align_neg_50 == "中" else chart.right)

// 75%概率线（-36%）
text_neg_75 = input.string("75% (-36%)", title="负75%区间文本", inline="neg75")
align_neg_75 = input.string("右", title="对齐方式", options=["左", "中", "右"], inline="neg75")
hline(-1.0, color=#2950de, title="负75%概率线")
var label lbl_neg_75 = label.new(chart.right, -1.0, text_neg_75, color=color.new(color.white, 100), textcolor=#2950de, style=label.style_none)
label.set_text(lbl_neg_75, text_neg_75)
label.set_y(lbl_neg_75, -1.0)
label.set_x(lbl_neg_75, chart.left if align_neg_75 == "左" else chart.middle if align_neg_75 == "中" else chart.right)

// 95%概率线（-48%）
text_neg_95 = input.string("95% (-48%)", title="负95%区间文本", inline="neg95")
align_neg_95 = input.string("右", title="对齐方式", options=["左", "中", "右"], inline="neg95")
hline(-2.5, color=#787B86, title="负95%概率线")
var label lbl_neg_95 = label.new(chart.right, -2.5, text_neg_95, color=color.new(color.white, 100), textcolor=#787B86, style=label.style_none)
label.set_text(lbl_neg_95, text_neg_95)
label.set_y(lbl_neg_95, -2.5)
label.set_x(lbl_neg_95, chart.left if align_neg_95 == "左" else chart.middle if align_neg_95 == "中" else chart.right)

// 98%概率线（-49%）
text_neg_98 = input.string("98% (-49%)", title="负98%区间文本", inline="neg98")
align_neg_98 = input.string("右", title="对齐方式", options=["左", "中", "右"], inline="neg98")
hline(-3.5, color=#c73030, title="负98%概率线")
var label lbl_neg_98 = label.new(chart.right, -3.5, text_neg_98, color=color.new(color.white, 100), textcolor=#c73030, style=label.style_none)
label.set_text(lbl_neg_98, text_neg_98)
label.set_y(lbl_neg_98, -3.5)
label.set_x(lbl_neg_98, chart.left if align_neg_98 == "左" else chart.middle if align_neg_98 == "中" else chart.right)

功能说明 #

• 每条概率水平线对应独立的文本输入框，可自由修改显示内容
• 支持为每条线选择左/中/右三种对齐方式，文本自动定位到对应位置
• 文本颜色与对应水平线保持一致，视觉风格统一
• 使用var label确保标签仅初始化一次，避免重复绘制导致的性能问题

内容的提问来源于stack exchange，提问作者lvbx9