<html><head></head><body bgcolor='#FFFFFF' style='font-size:12px;background-color:#FFFFFF;font-family:Verdana, Arial, sans-serif;'>Dear FT'ers,<br/><br/>Davide Rivolta posted a problem with ft_volumesegment a while ago. We have meanwhile solved this problem.<br/><br/>There is (FT from may 31st) a problem with the handling of the<br/><span><br/>cfg.smooth<br/><br/>option.<br/><br/>It's default is 'no', according to the function HELP.<br/>However</span> in line 434 of ft_volumesegment, this option is put into a numerical array - this makes sense for a smoothing value. Also if no specification is given at all, then a NaN is inserted into the array. However if "no" is set explicitely then ft_getopt tries to insert the string 'no' into the array which leads to an error. Below is a script that is running and the error is once again detailed in the commets.<br/>In my opinion this could be fixed by simply updating te function HELP.<br/><br/>Michael<br/><span style="font-size: 10pt; font-family: "Courier New";"> </span><br/><blockquote style="border-left: 2px solid blue; margin-left: 5px; padding-left: 5px; padding-top: 5px;"><div><div class="WordSection1"><p class="MsoNormal"><span>%%Brain segmentation – MRI</span></p><p class="MsoNormal"><span> </span></p><p class="MsoNormal"><span>mri = ft_read_mri('NPD18_V2.mri');</span></p><p class="MsoNormal"><span>cfg = [];</span></p><p class="MsoNormal"><span>cfg.spmversion = 'spm8';</span></p><p class="MsoNormal"><span>cfg.output = 'tpm'; </span></p><p class="MsoNormal"><span>cfg.template = 'T1.nii';</span></p><p class="MsoNormal"><span>cfg.units = 'mm';</span></p><p class="MsoNormal"><span>cfg.write = 'no';</span></p><p class="MsoNormal"><span>cfg.coordsys = 'ctf';</span></p><p class="MsoNormal"><span>cfg.downsample = 2;</span></p><p class="MsoNormal"><span>cfg.smooth = NaN; % works. option 'no' as recommended (!) in the function HELP throws an</span></p><p class="MsoNormal"><span> % error because ft_getopt on line 434 of ft_volumesegment </span></p><p class="MsoNormal"><span> % tries to put a string of length two into an array that is for numbers</span></p><p class="MsoNormal"><span> % leaving out this option also worked, but some</span></p><p class="MsoNormal"><span> % people might try to use this option</span></p><p class="MsoNormal"><span>segmentedmri = ft_volumesegment(cfg, mri);</span></p><p class="MsoNormal"><span>save ('segmentedmri');</span></p></div></div></blockquote></body></html>