Where can I find or how to make a ruler, percentage scale indicator for MT4?

Question

Fintech

Good afternoon. I needed a very simple indicator of a ruler or a percentage scale for metatrader 4. It is necessary that next to the prices on the chart a rectangle or a line be shown in the entire length of the trading chart. The line is drawn from 0 to 100% in both directions. those. from bottom to top from 0-100% and from top to bottom from 0-100%. Maybe someone has met a similar indicator or can tell you how to make it yourself?

Answer 1

This is how the percentage is calculated on a vertical scale, a price scale

int             InpPrice1=95;//%
//--- размер массива price 
   int accuracy=1000; 
//--- массив для хранения значений цен, которые будут использованы 
//--- для установки и изменения координаты точки привязки линии 
   double price[]; 
//--- выделение памяти 
   ArrayResize(price,accuracy); 
//--- заполним массив цен 
//--- найдем максимальное и минимальное значение графика 
   double max_price=ChartGetDouble(0,CHART_PRICE_MAX); 
   double min_price=ChartGetDouble(0,CHART_PRICE_MIN); 
//--- определим шаг изменения цены и заполним массив 
   double step=(max_price-min_price)/accuracy; 
   for(int i=0;i<accuracy;i++) 
      price[i]=min_price+i*step; 
//--- определим точки для рисования линии 
   int p=InpPrice*(accuracy-1)/100;