Inserting NaN values between results

I have the following cummulative data:

RF_Cumm =

   0.510000000000000
   0.510000000000000
   0.510000000000000
   0.510000000000000
   0.510000000000000
   1.780000000000000
   1.780000000000000
   1.780000000000000
   2.800000000000000


RF_Cumm =

   3.300000000000000


RF_Cumm =

   1.780000000000000
   3.560000000000000
   4.070000000000000
   4.070000000000000
  15.240000000000000


RF_Cumm =

   0.250000000000000
   0.760000000000000
   1.010000000000000
   1.010000000000000
   1.010000000000000
   1.010000000000000
   1.010000000000000
   1.260000000000000
   
 

I would like to insert NaN before and after the different sets of RF_Cumm events to look like:

    NaN
   0.510000000000000
   0.510000000000000
   0.510000000000000
   0.510000000000000
   0.510000000000000
   1.780000000000000
   1.780000000000000
   1.780000000000000
   2.800000000000000
   NaN
   3.300000000000000
   NaN
   1.780000000000000
   3.560000000000000
   4.070000000000000
   4.070000000000000
  15.240000000000000
   NaN
   0.250000000000000
   0.760000000000000
   1.010000000000000
   1.010000000000000
   1.010000000000000
   1.010000000000000
   1.010000000000000
   1.260000000000000

Answer 1

[Walter Roberson]

All_RF_Cumm = [];

for ... whatever looping is appropriate
    ... stuff    
    RF_Cumm = whatever is appropriate
    if isempty(All_RF_Cumm)
        All_RF_Cumm = RF_Cumm;
    else
        All_RF_Cumm = [All_RF_Cumm; nan; RF_Cumm];
    end
    ... more stuff
end

[Queena Edwards]

what do I put by whatever looping is appropriate?

[Walter Roberson]

What is your current code structure? Are you creating those RF_Cumm inside a loop? If so, then the place where I say "whatever looping is appropriate" is that loop.

If, instead, you just have a series of assignments to RF_Cumm that are not in a loop, then

... stuff
RF_Cumm = first value
All_RF_Cumm = RF_Cumm;
.... more stuff
RF_Cumm = second value
All_RF_Cumm = [All_RF_Cumm; nan; RF_Cumm];

and keep going until all the assignments have been made.

[Queena Edwards]

NaNv = find(isnan(Time));                                                 %Finding Nan in Time Column
Rain([find(isnan(Time))])=NaN;                                            %Changing the numbering of events to NaN in accordance with that from Time column
idx2 = isnan(Rain);                                                       %Finding the NaN in the Rain Column of T2                                                     
NaNv = [NaNv; size(Rain,1)];                                              %Last Index (Instead Of Last 'NaN') Is The End Of The Vector
Events = 1:numel(NaNv)-1;

for x = Events
    idxrng = NaNv(x)+1:NaNv(x+1)-1;                                       %Index defining the rainfall between NaN
    RF_Cumm = cumsum(Rain(idxrng));                                       %Cumulative Rainfall In Each Event (mm)
      
end

that's what i used to get RF_Cumm what would be the new loop?

[Walter Roberson]

NaNv = find(isnan(Time));                                                 %Finding Nan in Time Column
Rain([find(isnan(Time))])=NaN;                                            %Changing the numbering of events to NaN in accordance with that from Time column
idx2 = isnan(Rain);                                                       %Finding the NaN in the Rain Column of T2                                                     
NaNv = [NaNv; size(Rain,1)];                                              %Last Index (Instead Of Last 'NaN') Is The End Of The Vector
Events = 1:numel(NaNv)-1;

All_RF_Cumm = [];
for x = Events
    idxrng = NaNv(x)+1:NaNv(x+1)-1;                                       %Index defining the rainfall between NaN
    RF_Cumm = cumsum(Rain(idxrng));                                       %Cumulative Rainfall In Each Event (mm)
    if isempty(All_RF_Cumm)
        all_RF_Cumm = RF_Cumm;
    else
        All_RF_Cumm = [All_RF_Cumm; nan; RF_Cumm];
    end
end