MATLAB: Gap filling with liner interpolation

gap-fillinginterpolationliner interpolation

Hi,

I have a data file (attached) which I need to fill gaps (here in -9999) by liner interpolation. Could anyone please help me with this.

Many thanks

A=xlsread('data.xlsx'); 
I=A==-9999; 
J=find(~I); 
B=A; 
B(I)=interp1(J,A(J),find(I));

Do you always have a fully populated first column as the time vector? If so, you can try the following to do the linear interpolation for you

nidx = data(:,2)==0;
data(nidx,2) = interp1(data(~nidx,1),data(~nidx,2),data(nidx,1),'linear','extrap')

HTH

If it really is just one pixel, then try this:

BW2 = bwmorph(BW, 'bridge');

If it is more than one pixel, then take a look at IMCLOSE. This will affect the entire binary boundary in the image, however.