Get DataList from additional input parameters

Replies to This Discussion

Permalink Reply by David Rutten on January 18, 2016 at 5:20am

for (int i = 0; i < Params.Input.Count; i++)

  List<string> data = new List<string>();

  DA.GetDataList(i, data);

Something like this?

Permalink Reply by Pieter Segeren on January 18, 2016 at 5:41am

Thanks David:) Yes, something like that.
I'll try to invent a way to have a unique name for each variable that holds an additional datalist next. If you can head that one in too, you're more than welcome to do so (because I'm thinking of a loop) ;)

Permalink Reply by David Rutten on January 18, 2016 at 7:22am

The GH_ComponentParamServer class (or 'Params' if you're inside a component) has static methods for coming up with unique names: InventUniqueNickname(). It's not particularly good, but it may help you on your way.

Permalink Reply by Pieter Segeren on January 18, 2016 at 7:48am

Thanks for thinking with me. I got my NickNames for the inputs as L0, L1, L2... Lx and that's working fine, but the trouble I'm having is to declare and instatiate the variables. Now their all called 'data' (right?), and my goal is to have them named data0, data1, data2 etc. so I can get their (separate) contents (list of string) via their unique name. I'm not achieving much progress on that matter here (yet).

Permalink Reply by David Rutten on January 18, 2016 at 9:43am

The best place to make sure your naming is all ship-shape is to put the logic in the VariableParameterMaintenance method. There you can assign nicknames, regular names, descriptions, access states, etc. to all parameters and you can be certain that you'll always be called before a new solution starts, provided stuff has changed. You may also elect to set the MutableNickName property to false for your parameters, if you don't want users to mess about with your indexing scheme.

Permalink Reply by Pieter Segeren on January 18, 2016 at 10:00am

I think I got that all running (see attachment), but I'm all loopy by now about how I can dynamically generate the naming
Dim data0 As New List (Of String)
Dim data1 As New List (Of String)
Dim data2 As New List (Of String)
...
...
and then do something like:
DA.GetDataList(i, "data" & i)  to assign the input lists.
 
Thusly loopy, that I'm taking a break now to cook some diner:)

Attachments:

• ListsOfString.vb, 5 KB

Permalink Reply by Daniel González Abalde on January 18, 2016 at 2:21pm

Something like this should work:

Dim Dic As New Dictionary(Of Integer, list(Of String))

For i As int32 = 0 To Params.Input.Count - 1
Dic(i) = New list(Of String)
GetData(Dic(i))
Next

A = Dic(2) 'Instead of a variable name, use Dic(index).

'This function simulates the DA.GetDataList().

Function GetData (ByRef L As list(of string)) As Boolean 

L = New list(Of String) From {"Bla","Bla"}
Return True
End Function

Permalink Reply by Pieter Segeren on January 18, 2016 at 3:24pm

Thank you very much for your effort Dani, I'm going to try and adapt it (once I grasp what's going on) to work with my component.
(The "Bla","Bla" actually should be read in from the input list)

Permalink Reply by Pieter Segeren on February 6, 2016 at 9:30am

In case anyone is wondering how I solved my issue:


Dim dict As New Dictionary(Of Int32, List(Of String))        

For i As Int32 = 0 To Params.Input.Count - 1
    Dim dataStr As New List(Of String)()
    DA.GetDataList(i, dataStr)
    dict(i) = dataStr
Next


Please speak up if you know there's room for improvement!

Thanks again guys:)