ChartTimePriceToXY
ChartTimePriceToXY
Converts the coordinates of a chart from the time/price representation to the X and Y coordinates.
bool ChartTimePriceToXY(
long chart_id, // Chart ID
int sub_window, // The number of the subwindow
datetime time, // Time on the chart
double price, // Price on the chart
int& x, // The X coordinate for the time on the chart
int& y // The Y coordinates for the price on the chart
);Parameters
- chart_id
[in] Chart ID. 0 means the current chart.
- sub_window
[in] The number of the chart subwindow. 0 means the main chart window.
- time
[in] The time value on the chart, for which the value in pixels along the X axis will be received. The origin is in the upper left corner of the main chart window.
- price
[in] The price value on the chart, for which the value in pixels along the Y axis will be received. The origin is in the upper left corner of the main chart window.
- x
[out] The variable, into which the conversion of time to X will be received.
- y
[out] The variable, into which the conversion of price to Y will be received.
Return Value
Returns true if successful, otherwise false. To get information about the error, call the GetLastError() function.
Example:
#define BAR_NUMBER 0 // number of the bar we get the price and time from
//+------------------------------------------------------------------+
//| Script program start function |
//+------------------------------------------------------------------+
void OnStart()
{
//--- copy data of a single bar by the BAR_NUMBER index
MqlRates rates[]={};
if(CopyRates(_Symbol, _Period, BAR_NUMBER, 1, rates)!=1)
{
PrintFormat("CopyRates() failed for bar %d. Error %d", BAR_NUMBER, GetLastError());
return;
}
//--- convert the obtained price and time into chart pixel coordinates
int x=0, y=0;
ResetLastError();
if(!ChartTimePriceToXY(ChartID(), 0, rates[0].time, rates[0].close, x, y))
{
Print("ChartTimePriceToXY() failed. Error ", GetLastError());
return;
}
//--- print the obtained result in the journal
PrintFormat("For bar[%d] with opening time %s and price %.*f, the chart coordinates are x: %d, y: %d", BAR_NUMBER, TimeToString(rates[0].time), _Digits, rates[0].close, x, y);
/*
result:
For bar[0] with opening time 2024.08.09 15:06 and price 1.27378, the chart coordinates are x: 784, y: 240
*/
}See also