Metatrader 4 script to convert 10 years of M1 data

I am looking for a script or something to convert 10 years of M1 data (.csv files, direct MT import) into M5, M15, D1 etc. The problem is that MT's limit is a number of bars to import, so the limit is a few months of M1 bars. Since I have M1 data that limits me to a few months of hourly, and daily, etc bars using the standard MT4 period converter script if I've imported it.

Any help?

EDIT: I suppose what I'm asking is, is there a way to take an external CSV file and have it converted to a different timeframe and output in a separate file?

How many 1M bars in 10 years? Should be around 3-4million I think. MT4 is capable of handling that.

You know what Ronald, you're right. I was thinking about MT Administrator and not the MT client. Thanks for reminding me.

EDIT: It's now giving me errors.

2010.07.01 10:05:17 Memory handler: cannot allocate 245508560 bytes of memory

Use the history center.

Import the 1M data into the history center, then use the period converter to convert the 1M time into whatever you need.

Then go back into the history center and export the timeframes you converted.

The alternative is to rewrite the script so it doesn't try to write the entire file into memory, but rather in chunks.

After importing the ten years of forex tester minute data

Even if max bars in chart and history is set to 9999999999999, the most that will be open in a minute chart to convert is 2 months of minute data

Using the period converter script, the higher timeframes I am converting to are thus also limited to the the last 2 months.

How do I convert the other 9 years and 10 months of minute bars to higher timeframes so I can run backtests over a few years at 90% accuracy?

EDIT: A simple restart of MT4 after changing Max bars in chart reveals a 1 Min chart from 7/9/09 - 17 months at least. I still don't see why a chart going back a few years isn't displayed?

Don't worry guys it's done now. All it seemed to take to convert the whole 10 years of 1 min data to higher timeframes in the end was a re-start and a re-import of the original data - just for anyone alse who might come across this with similiar problems.

So now in theory I'll be able to run 10 year backtests at 90% accuracy? We'll see how that goes

i think this link is useful
http://thetrademachine.com/blog/2009...sting-quality/
or
http://global.fxdd.com/en/mt1m-data.html
the steps is there

This error happens whenever MT4 reaches 1GB of memory. See more information here - http://www.jeremywhittaker.com/2012/...-or-csv-files/