How to fill empty spaces and mark them on plot?

Hi there! I'm having an issuse with filling empty elements and then marking them with red dots. Here is what i got:

F = standardizeMissing(d1, Inf);

F(isnan(F))=0;
plot(F,'.r', 'MarkerSize', 15) 
hold on
plot(F,'b')

It fills the empty values but on the plot, it marks all of the points, not only the ones that were empty.

Answer 1

[KSSV]

idx = isnan(F); 
id1 = find(idx) ; 
id2 = find(~idx) ; 
% Fill missing 
F(idx) = interp1(id2,F(id2),id1) ; 

plot(id1,F(idx),'.r', 'MarkerSize', 15) 
hold on
plot(1:length(F),F,'b')

[Alicja Kozik]

Thanks for your help, but it doesn't seem to work properly.

[KSSV]

You need to provide the indices. Edited the code.

[Alicja Kozik]

I think you didn't actually understand what I mean. I have to fill missing places and put red dots where the misssing places existed. Like in this example:

[KSSV]

Edited the code.....you can also use fillmissing an inbuilt function to fill the missing/ NaN values.

[Alicja Kozik]

I've tried with fillmissing as well. Didn't work for me. I applied the code you sent me, the NaN values are changing, but the values that were previously NaN are still not marked with the red dots.

[KSSV]

F = rand(1,10) ; 
F(2) = NaN ;
F(5) = NaN ; 
F(7) = NaN ;

idx = isnan(F); 
id1 = find(idx) ; 
id2 = find(~idx) ; 
% Fill missing 
F(idx) = interp1(id2,F(id2),id1) ; 

plot(id1,F(idx),'.r', 'MarkerSize', 15) 
hold on
plot(1:length(F),F,'b')

[Alicja Kozik]

Thanks a lot!