Re: Gaussian fit of a peak

[Andrea Cimatoribus]

In matlab, I used function "fit". Data are intensity as a function of
energy. Of course, you can think it as an histogram of event number as
a function of energy.
Andrea

2008/9/17 Ben Abbott <address@hidden>:
>
>
> On Wednesday, September 17, 2008, at 10:20AM, "Andrea Cimatoribus" 
> <address@hidden> wrote:
>>Hi everybody,
>>I am an absolute novice of octave, even though I have some experience
>>with matlab.
>>Just to get the feeling of octave, I am presently translating a simple
>>(but very useful to me) script, that basically sums data with a peak
>>structure. In order to do this properly, I need to centre each new
>>spectrum on the zero, that is the peak maximum. My strategy, in
>>matlab, was to make a preliminary gaussian fit, whose result was to be
>>confirmed through a graphical input, to get the "zero" of the
>>spectrum. As of now, I am trying to understand how can I make a
>>gaussian fit of the data in octave. Data is simply organised as a
>>matrix [x,y]. Is there a built function? Sorry but I can't find
>>anything with online help.
>>Andrea
>
> How did you do it in Matlab?
>
> If the data is statistical, then I'd recommend you calculate the median and 
> standard deviation and construct the gaussian distribution from that.
>
> By "sums data with a peak structure" do you mean you are constructing a 
> histogram?
>
> Ben
>