How to pick specific points and mark them on a plot?

Hi, I currently have an array that is finding temperature differences between two sets of quality controlled data. I have no problem finding these temperature differences and plotting them, but I'd like to know if there is a way for me to mark where there is at least a one degree difference? so:

%temp is time series object with temperature differences

plot(temp)

for i=1:length(temp)

if temp(i)>1 temp(i)<-1

       ((mark this on the plot))

    end
end

Thanks!

Answer 1

[Vivek Selvam]

Hi Marian

Add this snippet:

hold on; 
plot(i,temp(i),'*')

[Marian]

It appears to be plotting the timeseries and then plotting the '*' further down the axis, instead of on top of the time series. Is there any way I can "get" the elements of the timeseries itself? In other words, instead of using temp, could I use my time series object for temp, ts5, in this for loop? It tells me I cannot just use ts5(i), as it is an undefined function for time series.