create syntax to compare dseries to numbers

e.g. if a is a dseries, the command a>0 would return a vector/matrix of all elements in a.data that are greater than 0

I do not think that this would be a good move. Usually this binary op returns booleans (true/false or 1/0) in matlab. I think that we should be consistent with this behavior. You can get what you want with:

a(a.dates(find(a.data>0)))

We could implement something shorter like:

a(a>0)

We would need to overload >, <, >=, <= and to modifty the overloaded subsref method (so that we can index dseriesobjects with logical arrays). But all this would only make sense for dseries objects having only one variable, so I do not know if it's a good idea...

Yes, I misspoke in the initial message. I wanted the same functionality as in Matlab. To return a vector/matrix with all elements marked as 1 that are greater than 0. This is useful for a dseries with more than one variable

Yes, we can implement the comparison operators (a>0) for dseries objects with more than one variable, but I don't know what should return a(a>0) in this case (the returned true and false won't be, a priori, on the same rows for each variable).

That said, this will allow us to filter a dseries object with respect to the sign of one of the variables:

a(a.x>0)

or with respect to any rule applied on a variable

a(fun(a.x))

where funis a function returning a vector of booleans.

Once this is done, fix code in DynareTeam/reporting@4083eeee521e8f7367073c50955599a3ee72bdc7

mentioned in commit 58f96e10

mentioned in commit 5f829d00

closed with commit 507ec822