spearman correlation in bootstrap function

Hi Matlab experts,

How can I implement a spearman correlation in the bootstrp function:

bootstat = bootstrp(1000,@corr,a,b) ?

Thanks,

Tamir

Answer 1

[Jeff Miller]

scorr = @(a,b)(corr(a,b,'Spearman'));
bootstat = bootstrp(1000,scorr,a,b);

[Tamir Eisenstein]

Hi Jeff,

Thanks! but it runs an error message when I try to run this code (I called the script "trial"):

Error using internal.stats.parseArgs (line 42)

Wrong number of arguments.

Error in corr (line 110)

[type,rows,tail] = internal.stats.parseArgs(pnames,dflts,varargin{:});

Error in trial>@(a,b)(corr(a,b,'Spearman'))

Error in bootstrp (line 170)

bootstat = feval(bootfun,bootargs{:});

Error in trial (line 2)

bootstat = bootstrp(1000,scorr,a,b);

Caused by:

Unable to evaluate BOOTFUN with the supplied arguments.

[Jeff Miller]

Ooops, sorry, it should be

scorr = @(a,b)(corr(a,b,'type','Spearman'));