Thread Subject:

fitdist question

Hello All,

I have a question about the fitdist function. I have data along with the number of occurrences, but am confused as to how to use that with the function. My code looks something like this:

data = [50x2 matrix]
X = data(:,1);
freq = data(:,2);
L = length(X);
cens = linspace(0,0,L)';
probplot(X,cens,freq)
fit = fitdist(X,cens,freq,'weibull')

I can't seem to get it to work, any suggestions? Thanks in advance.

On 1/21/2011 8:51 AM, Shaun Hurley wrote:
> fit = fitdist(X,cens,freq,'weibull')
>
> I can't seem to get it to work, any suggestions? Thanks in advance.

Shaun, is this the FITDIST function in the Statistics Toolbox? If it
is, that's not the correct way to call it. I think you want something like

    fit = fitdist(X,'weibull','frequency',freq)

Hope this helps.

Worked perfect, thank you so much!

Hi All,
Anybody know how I can get the error in the fit process using this MATLAB function?

Thank you in advance
Pablo

El viernes, 21 de enero de 2011 10:51:05 UTC-3, Shaun Hurley escribi:
> Hello All,
>
> I have a question about the fitdist function. I have data along with the number of occurrences, but am confused as to how to use that with the function. My code looks something like this:
>
> data = [50x2 matrix]
> X = data(:,1);
> freq = data(:,2);
> L = length(X);
> cens = linspace(0,0,L)';
> probplot(X,cens,freq)
> fit = fitdist(X,cens,freq,'weibull')
>
> I can't seem to get it to work, any suggestions? Thanks in advance.

>> fit = fitdist(X,cens,freq,'weibull')
>>
>> I can't seem to get it to work, any suggestions? Thanks in advance.

Type "help fitdist". This function call is of the form fitdist(x,'weibull')
with other optional inputs provided by optional parameter names and values.

-- Tom