Question-and-Answer Resource for the Building Energy Modeling Community
Get s tarted with the Help page
Ask Your Question

IDF edited file not valid to draft strictness

asked 2020-08-11 09:45:33 -0500

CullerWhale gravatar image

updated 2020-08-11 15:25:07 -0500

I attempted to edit the IDF file by editing the ShadowCalculation object accordingly:

  PixelCounting, !- Shading Calculation Method
  Periodic, !- Shading Calculation Update Frequency Method
  20, !- Shading Calculation Update Frequency
  15000, !- Maximum Figures in Shadow Overlap Calculations
  SutherlandHodgman, !- Polygon Clipping Algorithm
  512; !- Pixel Counting Resolution

However, when I save the IDF file and try to import it into OpenStudio, I receive the following error:

"File is not valid to draft strictness. Check that IDF is of correct version and that all fields are valid against Energy+.idd.

The collection is INVALID at strictness level 'Draft', because of the errors:
Field level data error of type DataType .
Error is in an object of type 'ShadowCalculation', named '', in field 0.
Additional information about the error type: field-level data is of an incorrect type.
Field level data error of type NumericBound .
Error is in an object of type 'ShadowCalculation', named '', in field 2.
Additional information about the error type: numeric data violates a min or max bound."

Do you have any suggestions?

Thank you, Cullen

edit retag flag offensive close merge delete


@CullerWhale what version of EnergyPlus is used in the IDF? What version of OpenStudio are you using to import the IDF?

Aaron Boranian gravatar image Aaron Boranian  ( 2020-08-11 11:01:07 -0500 )edit

I am using OpenStudio version 2.9.1, Sketchup Make 2017, and Energy Plus 9.2.0 which was packaged with Openstudio when I downloaded them together.

CullerWhale gravatar image CullerWhale  ( 2020-08-11 15:33:51 -0500 )edit

1 Answer

Sort by ยป oldest newest most voted

answered 2020-08-11 16:32:52 -0500

updated 2020-08-11 17:46:24 -0500

The PixelCounting shadow calculation using the GPU was added in EnergyPlus 9.3. It is not available in EnergyPlus 9.2.

EDIT: So to take advantage of this new capability, you will have to use the OpenStudio application v1.0.0, which corresponds to EnergyPlus v9.3.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer


Question Tools

1 follower


Asked: 2020-08-11 09:45:33 -0500

Seen: 169 times

Last updated: Aug 11 '20