Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
OpenStudio has some confusing behavior with design days. When you select a ddy file, OS will grab the design day objects in that file and import them into the osm. The path that you see in the "DDY File Path" field is a remnant of what you selected, put that path is no longer important and it is not kept with the model. What is important is the "number of design days" listed in the bottom row. I'm guessing your model still has design days and will still run in 1.5.2. Have you tried it?
What is new in OpenStudio is that we no longer keep all of the tabs open in memory while you are working on a Model. Instead only the tab that you have selected is held in memory. We did this to improve the application's performance and to a lesser extent the memory footprint. It means that when you click on a new tab the old tab is gone, and when you come back it has to be reinitialized with the Model data. Since the DDY File Path is not actually data that is stored in the model, that path is gone. This same thing has always happened when you closed a Model and later reopened it.
| | 2 | No.2 Revision |
OpenStudio has some confusing behavior with design days. When you select a ddy file, OS will grab the design day objects in that file and import them into the osm. The path that you see in the "DDY File Path" field is a remnant of what you selected, put but that path is no longer important and it is not kept with the model. What is important is the "number of design days" listed in the bottom row. I'm guessing your model still has design days and will still run in 1.5.2. Have you tried it?
What is new in OpenStudio is that we no longer keep all of the tabs open in memory while you are working on a Model. Instead only the tab that you have selected is held in memory. We did this to improve the application's performance and to a lesser extent the memory footprint. It means that when you click on a new tab the old tab is gone, and when you come back it has to be reinitialized with the Model data. Since the DDY File Path is not actually data that is stored in the model, that path is gone. This same thing has always happened when you closed a Model and later reopened it.
