#Ищет базу, на уровнях 10-20-30 и так далее
#Cнять галочку Include Extended Session
#www.nyser.ru ©

def iDiff = 0.01; #максимальное отклонение в центах
def iBars = 4; #число баров для просмотра
def iLowest = lowest(low,iBars);
def iHighest = highest(high,iBars);

def bBaseLow = fold Lbar = 0 to iBars with Lsumm=1 do if 
((low[Lbar]-iLowest)<=iDiff) then Lsumm*1 else Lsumm*0;
def bBaseHigh = fold Hbar = 0 to iBars with Hsumm=1 do 
if ((iHighest-high[Hbar])<=iDiff) then Hsumm*1 else 
Hsumm*0;         
def iLevelLow = fold LLbar = 0 to iBars with LLsumm 
do if (low[LLbar] == roundDown(low[LLbar],1)) then LLsumm+1 else LLsumm;
def iLevelHigh = fold LHbar = 0 to iBars with LHsumm 
do if (high[LHbar] == roundUp(High[LHbar],1)) then LHsumm+1 else LHsumm;

plot bBase = if (bBaseLow and iLevelLow ) then 1 
else if (bBaseHigh and iLevelHigh ) then 2 
else 100;

AssignBackgroundColor (if (bBase == 1) then Color.LIGHT_GREEN else if (bBase == 2) then Color.LIGHT_RED else Color.black);