# How can I read data from open pdc archive

**URL:** <http://discussions.gridprotectionalliance.org/t/how-can-i-read-data-from-open-pdc-archive/166>\
**Category:** openHistorian\
**Created:** [April 25, 2017, 8:15am UTC](http://discussions.gridprotectionalliance.org/t/how-can-i-read-data-from-open-pdc-archive/166 "2017-04-25T08:15:47Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![era](http://discussions.gridprotectionalliance.org/letter_avatar_proxy/v4/letter/e/919ad9/32.png) [@era](http://discussions.gridprotectionalliance.org/u/era)\
**Post date:** [April 25, 2017, 8:15am UTC](http://discussions.gridprotectionalliance.org/t/how-can-i-read-data-from-open-pdc-archive/166/1 "2017-04-25T08:15:47Z")

</div>

In openPDC Archive data is saved as d file.Without help of open historian how can I retrieve data from d file?I am facing trouble regarding this thing.

---

<div class="post-metadata">

**Author:** ![ritchiecarroll](http://discussions.gridprotectionalliance.org/user_avatar/discussions.gridprotectionalliance.org/ritchiecarroll/32/2_2.png) [@ritchiecarroll](http://discussions.gridprotectionalliance.org/u/ritchiecarroll)\
**Post date:** [May 1, 2017, 5:00pm UTC](http://discussions.gridprotectionalliance.org/t/how-can-i-read-data-from-open-pdc-archive/166/2 "2017-05-01T17:00:18Z")

</div>

Are you trying to replay data saved in a .D file back through the openPDC or just use an API with code to read data?

Thanks,  
Ritchie

---

<div class="post-metadata">

**Author:** ![hinfsynz](http://discussions.gridprotectionalliance.org/user_avatar/discussions.gridprotectionalliance.org/hinfsynz/32/720_2.png) [@hinfsynz](http://discussions.gridprotectionalliance.org/u/hinfsynz)\
**Post date:** [July 11, 2017, 2:12pm UTC](http://discussions.gridprotectionalliance.org/t/how-can-i-read-data-from-open-pdc-archive/166/3 "2017-07-11T14:12:30Z")

</div>

Hi Ritchie,

I just saw this post. Actually I have the question about how to read data from .d file using API with code. Could you please shed some light on it?

Thanks,  
Song