Getting indicator data to .csv file | Forex Factory

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Getting indicator data to .csv file

  • #1
  • First Post: Edited 9:58pm May 4, 2011 9:46pm | Edited 9:58pm
Hello. With the attached script, I am trying to store data from my correlation indicator to a csv text file. Any ideas on why this would not work? No values are showing up in the file for the correlation indicator values. The other fields are there.

store the outputhistory ex4 file in the experts/scripts folder. Restart MT,then drag the script to the chart. Then it stores the chart values to a file. As seen, I am trying to use the iCustom function to reference the correlation indicator..

Inserted Code
double val=iCustom("USDCAD",0,"Correlation",0,0);
FileWrite(handle, date1, time1, iOpen(ccy,tf,i), iHigh(ccy,tf,i), iLow(ccy,tf,i), iClose(ccy,tf,i),val);
Attached File(s)
File Type: mq4 output_history.mq4   4 KB | 1,041 downloads
File Type: ex4 Correlation.ex4   3 KB | 498 downloads
File Type: mq4 Correlation.mq4   2 KB | 698 downloads
  • #2
  • May 4, 2011 10:00pm May 4, 2011 10:00pm
you need to actually add some

Inserted Code
 + "," +
in the filewrite. the commas in the file write mql reads as you simply separating different variables/function values.

it's kind of like if you wrote filewrite("a", "b", "c", "d") you would get the resulting string of "abcd" written to the file.

what you want is to do filewrite("a" + "," + "b" + "," + "c" + "," + "d"). or in you case FileWrite(handle +","+ date1 +","+ time1 +","+ iOpen(ccy,tf,i) +","+ iHigh(ccy,tf,i) +","+ iLow(ccy,tf,i) +","+ iClose(ccy,tf,i),val, "/n");

don't forget the newline character at the very end. a csv file is a "comma separated value" file with a newline character at the end of each "row". without the newline char all you will get is one row with all of your data on it.
Congratulations ScalaFX for coming out of the closet!
  • #3
  • May 4, 2011 10:35pm May 4, 2011 10:35pm
thanks for the quick reply nubcake. I tried your suggestion below but for some reason am still having the same problem.. no correlation indicator output showing in the csv file.

I'm having some weird file locking issues with metatrader associated files, am running Windows 7 and the security apparatus is nutty. The csv output files do not show up in windows explorer. The only way I can see or open them is to open it within the metaeditor. Not sure if that may have something to do with it.


Quoting nubcake
you need to actually add some

Inserted Code
 + "," +
in the filewrite....
  • #4
  • May 4, 2011 10:47pm May 4, 2011 10:47pm
Quoting Blud4oilPrgm
thanks for the quick reply nubcake. I tried your suggestion below but for some reason am still having the same problem.. no correlation indicator output showing in the csv file.

I'm having some weird file locking issues with metatrader associated files, am running Windows 7 and the security apparatus is nutty. The csv output files do not show up in windows explorer. The only way I can see or open them is to open it within the metaeditor. Not sure if that may have something to do with it.
i might not have been answering your specific issue, just that your file writing is incorrect for what a csv is.

win7 hides newly created mt4 files in
Inserted Code
C:\Users\YOURLOGINUSERNAME\AppData\Local\VirtualStore\Program Files (x86)\

you are better off copying your mt4 directory to somewhere other than program files, and also copying INTO the same directory the mt4 folder you find in the virtual store location i just mentioned. then uninstall your mt4 and just run the copied version. my mt4 is currently sitting on my desktop because i'm lazy. you might lose your broker login details, but i assume you have that in an email somewhere... or maybe that was just an issue i faced because i moved my mt4 at the same time as my broker was updating their servers and stuff.
Congratulations ScalaFX for coming out of the closet!
  • #5
  • Last Post: May 4, 2011 10:51pm May 4, 2011 10:51pm
Problems:

1. Correlation.mq4 isn't outputting data into indicator buffers (i.e. doesn't use SetIndexBuffer() etc). iCustom() can retrieve data only from buffers of specified indicator (its second last parameter is the buffer#).

2. Following on from above, last parameter in iCustom() needs to refer to the nth element of the buffer --- in your code, this would need to be something like iCustom("USDCAD",0,"Correlation",<values for external parameters in Correlation indy>,.... , <buffer#>,i);

3. You are also missing the <values for external parameters in Correlation indy> as shown in point 2.
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