Replace NaN values with values based on same group and other group?

2 visualizzazioni (ultimi 30 giorni)
  • table (650,000x20)
  • customerID group
  • cost group (NaN values throughout)
The table contains 5-7 data lines for each customerID that have the same cost except for one or two NaN cost values. It is obvious to replace the NaN values with the same other given cost values associated with the ID. But I am having trouble.
I was thinking:
Table.cost(isnan(Table.cost)) = Table.customerID(mode(Train.cost));
But this would apply to the entire rather than correct customerID?

Risposta accettata

Teja Muppirala
Teja Muppirala il 13 Set 2016
I think this should work.
% Sample data
T = cell2table({'ID1' 100 'aaa';
'ID1' nan 'bbb';
'ID1' nan 'ccc';
'ID2' 200 'ddd';
'ID2' nan 'eee';},'VariableNames',{'customerID','cost','otherStuff'})
% Replace the NaNs with the mode of that group
G = findgroups(T.customerID);
val = splitapply(@(x){mode(x)*ones(size(x))},T.cost,G);
T.cost = cat(1,val{:}) % <----- Fixed now

Più risposte (1)

Walter Roberson
Walter Roberson il 13 Set 2016

Prodotti

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by