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Bug 2491 - ft_clusterplot should check if cfg.correctail option was use to warn the proper pvalue
| Status | CLOSED FIXED |
| Reported | 2014-03-05 14:59:00 +0100 |
| Modified | 2019-08-10 12:29:38 +0200 |
| Product: | FieldTrip |
| Component: | core |
| Version: | unspecified |
| Hardware: | PC |
| Operating System: | Linux |
| Importance: | P5 normal |
| Assigned to: | Diego Lozano Soldevilla |
| URL: | |
| Tags: | |
| Depends on: | |
| Blocks: | |
| See also: |
Diego Lozano Soldevilla - 2014-03-05 14:59:00 +0100
On doing cluster-based nonparametric permutation tests there's the cfg option "correcttail" to correct the type I error rate (alpha) in case of a two-tailed test. There's a FAQ about it: http://fieldtrip.fcdonders.nl/faq/why_should_i_use_the_cfg.correcttail_option_when_using_statistics_montecarlo ft_clusterplot uses the cfg.alpha input to mask the pvalues. If the cfg.correcttail is used for a two-tailed test, the cfg.alpha should be asked is 0.025 and not 0.05. To alert users about this inconsistency, we should check the stat.cfg and check whether correcttail was properly specified and throw a warning in case is not.
Diego Lozano Soldevilla - 2014-03-12 10:53:33 +0100
(In reply to Diego Lozano Soldevilla from comment #0) Warning implemented: if (strcmp(stat.cfg.correcttail,'alpha') || strcmp(stat.cfg.correcttail,'prob')) && (stat.cfg.tail == 0); if ~(cfg.alpha >= stat.cfg.alpha); warning(['the pvalue you plot: cfg.alpha = ' num2str(cfg.alpha) ' is higher than the correcttail option you tested: stat.cfg.alpha = ' num2str(stat.cfg.alpha)]); end end Sending ft_clusterplot.m Transmitting file data . Committed revision 9287.