AddSpread非正常檔位價格時的取值方式?

plot1(addSpread(108.07,0),"108.07"); =>108

plot2(addSpread(108.47,0),"108.47");=>108

plot3(addSpread(108.57,0),"108.57");=>108.5

plot4(addSpread(60.97,0),"60.97"); =>60.9

plot5(addSpread(21.07,0),"21.07");=>21.05

看數據AddSpread是依數值若不在Tick值上，是  先👀 "往下找最接近的Tick價”  後，再做檔位調整?

若無此函數時，

買進，則“ 往下” 找最接近的Tick價，

賣出，則“ 往上” 找最接近的Tick 價