Re: [Help-gsl] what does xstride,ystride mean and how to set them?

[Richard]

 Hi Wang,
I understand now. Thanks very much!

Regards
Richard

On 2010/9/17 11:38, Hongzheng Wang wrote:
> Hi,
>
> these parameters are used to control the step lengths of data
> samplings.  Consider data sequence x for example.  The data you would
> like to feed into this function may not be one by one but every two.
> Then you need to let xstride be 2 to achieve that.
>
> Best,
> HZ
>
> On Thu, Sep 16, 2010 at 10:48 PM, Richard<address@hidden>  wrote:
> >   Hi,
> > I want to use  gsl_fit_linear function. But I am puzzled withe the
> > parameters xstride and ystride.
> > Could anybody like to give some explanations ?
> > Thanks in advance.
> >
> > Richard
> > PS. function signature :
> >   int *gsl_fit_linear* (const double * x, const size_t xstride, const double
> > * y, const size_t ystride, size_t n, double * c0, double * c1, double *
> > cov00, double * cov01, double * cov11, double * sumsq)
> >
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