Thread Subject: Rounding to nearest data point.

I have a column of data points, and my function is taking in a completely separate number from these points. I want to be able to round this number to the nearest point from my column of data points.

Any help is greatly appreciated.

Thanks in advance.

"jmeccles Eccles" <jared.eccles@hotmail.com> wrote in message <hnaso9$fdo$1@fred.mathworks.com>...
> I have a column of data points, and my function is taking in a completely separate number from these points. I want to be able to round this number to the nearest point from my column of data points.
>
> Any help is greatly appreciated.
>
> Thanks in advance.

How about something like the following:

index = find( abs(data(:)-value)==min(abs(data(:)-value)) ,1,'first');
result = data(index)

...where <data> is your column of data points and <value> is your completely separate number.

"jmeccles Eccles" <jared.eccles@hotmail.com> wrote in message <hnaso9$fdo$1@fred.mathworks.com>...
> I have a column of data points, and my function is taking in a completely separate number from these points. I want to be able to round this number to the nearest point from my column of data points.
>
> Any help is greatly appreciated.
>
> Thanks in advance.

help interp1

Data = 0:10:50
P = 22
idx = interp1(Data,1:numel(Data),P,'nearest') ;
nearestData = Data(idx)


Jos