Excel and similar spreadsheet programs have 
always been the mainstay of data entry and analysis operations. Even 
with acess to more sophisticated applications, most architects and 
engineers, still prefer to modify parameters of projects and components 
with a fluid interface such as a spreadsheet so that they can take the 
data elsewhere and do interesting things with it.
The
 Revit Project being a database, always lent itself to extension using 
Excel. Dynamo made it even more accessible. This recipe is a small 
demonstration of all the pieces needed to not only extract Revit 
component parameters to Excel, but also push back updated data back to 
Revit after performing operations within Excel.
Surprisingly,
 the biggest challenge turned out to be not the actual connection to 
Excel, but the smaller nuances of how the parameter data gets modified 
during the process of transferring between the two applications. If you 
would like to skip the explanations, you can download the dataset here.
Check out the complete recipe at the work-in-progress GitBook (which, by the way is an awesome platform)

