Can you read and write an array to a file? - General

roman epifanov 2012.01.31 13:13 #6271

stringo:
Is the file Unicode or ANSI? If the latter, then when opening a file, you need to explicitly write the FILE_ANSI flag

even with ANSI it's the same ... 0 is returned and there's nothing in the array

Slava 2012.01.31 13:42 #6272

openlive:
Even with ANSI it's the same ... 0 is returned and the array is nonsense.

Sorry, we didn't see it right away. The FileReadArray function is not applicable to your file.

Arrange element by element reading from CSV, like in 4

roman epifanov 2012.01.31 13:58 #6273

and which file you can work with

Test Account 2012.01.31 14:50 #6274

openlive:
and which file you can work with

Look at the help for functions to read and write arrays to a file.

roman epifanov 2012.01.31 21:39 #6275

alexvd:
Look at the help for functions to read and write arrays to a file.

help -
two-dimensional i.e. FileReadArray function doesn't work with multidimensional arrays... but in C++ please help write. help code C++

Test Account 2012.02.01 07:59 #6276

openlive:
Help -
binary i.e. FileReadArray function doesn't work with multidimensional arrays...

Who told you that?

Try modifying your own example to work with a binary file and you'll be happy.

Anatoli Kazharski 2012.02.01 09:23 #6277

Cannot display trade levels(CHART_SHOW_TRADE_LEVELS) on the chart object. Any other property to change in this case comes out.

---

For example, knowing the object name, get its identifier and then change the object property-(a):

subchart_id=ObjectGetInteger(0,chartname,OBJPROP_CHART_ID); // получим идентификатор объекта-графика
//---
ChartSetInteger(subchart_id,CHART_SHIFT,true);
ChartSetInteger(subchart_id,CHART_SHOW_TRADE_LEVELS,true);

The indentation is enabled, but the trade levels that currently exist on the same symbol are not displayed.

---

What could be the problem?

Getting the number of Creating objects on multiple metatrader feature

roman epifanov 2012.02.01 10:25 #6278

alexvd:

Who told you that?

Try modifying your own example to work with a binary file and you'll be happy.

I haven't worked with binary files, at least give me a hint how to create one and add data to it

Denis Kirichenko 2012.02.01 11:05 #6279

openlive:
not working with binary files, at least give me a hint on how to create one and add data to it

For example

roman epifanov 2012.02.01 11:41 #6280

denkir:
For example

//zadaem ramer svechi OHLC
double o=1.0, h=1.0, l=1.0, c=1.0;
   int handle=FileOpen("databin.dat",FILE_WRITE|FILE_BIN);
   FileWriteDouble(handle,o);
   FileWriteDouble(handle,h);
   FileWriteDouble(handle,l);
   FileWriteDouble(handle,c);
   FileClose(handle);
  
//zapolnayem massiv iz bin faila  
double mas[1][4];
   int handle1=FileOpen("databin.dat",FILE_READ|FILE_BIN,';');
   int numb=FileReadArray(handle1,mas); 
   FileClose(handle1);
//result
  for (int i=0;i<1;i++){
  Print(handle,mas[i][0],mas[i][1],mas[i][2],mas[i][3]);}

I tried an example, it still shows different values

2012.02.01 12:54:02 (EURUSD,H1) 11.0 1.0 1.0 1.0

why 11 I do not understand

Errors, bugs, questions - page 628