Dear Donna, Many thanks for your reply! And really sorry for my stupid question.
As I check the procedure of overlaying metric files, I find there's nothing wrong with the software. The problem is that when I overlay a t map as paint using Paint (ROI) or Probabilistic Atlas Data option, mapping algorithm automatically selects paint_enclosing_voxel. But when I overlay the t map as matric, I stupidly assume that the algorithm will also automatically selects metric_enclosing_voxel, but it doesn't. That means Caret "remembers" the previous option and I still use paint_enclosing_voxel to map metric files. I simply neglect to check the algorithm and that's the reason of the error. Thanks again for such detailed suggestion and I still learn a lot from it! all the best, Tony From: [email protected] Date: Sat, 31 Aug 2013 10:35:19 -0500 To: [email protected] Subject: Re: [caret-users] error: A metric file must be provided for metric mapping Weird. I'm curious: Have you tried loading another, existing metric file before mapping (e.g., one that comes with the tutorial, or one you have mapped previously)? It shouldn't matter, but I have seen other features under Surface: Measurements fail, if an existing surface shape file was not already loaded (e.g., like it needed some sort of priming column to exist). This is not what the error implies, and it should not be necessary. But I have come across this behavior myself, and I don't understand what triggers it. I'm just suggesting easy things to try, in hopes that a quick-fix is found. The only other suggestion that comes to mind is trying options similar to the one you want. For example, mapping to Caret, rather than to a spec with atlas, may not be as easy, but it might be more reliable. You can find the SPM target surface in /usr/local/caret/data_files/fmri_mapping_files/*AVG*SPM*coord. Load it in caret; copy to your directory; and map directly. Save the metric. See if you can get it to work that way, because mapping to spec file writes directly to the metric file, while mapping to caret just stores it in memory; you have to explicitly file: save as metric to save the results. More work, but perhaps fewer obstacles. ;-) On Aug 31, 2013, at 8:02 AM, tony han wrote:Hi, I'm trying overlay t maps created by spm. I've gone through this many times without error. However today I get the error: A metric file must be provided for metric mapping. It's pretty weird. I search through the archive and find that the only one who mentioned the same problem solved it by switching to an English character set. Actually I change the setting to English each time when I use Caret, or I can't even load spec files. Now I succeed in loading spec files. And when I try the other option in Map Volumes to Surfaces: Paint (ROI) or Probabilistic Atlas Data, it works. Could you give me any suggestion on possible solution? Thanks a lot! Tony _______________________________________________ caret-users mailing list [email protected] http://brainvis.wustl.edu/mailman/listinfo/caret-users _______________________________________________ caret-users mailing list [email protected] http://brainvis.wustl.edu/mailman/listinfo/caret-users
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