Hi, The recon pipeline outputed an apparently correct file, which happen to confuse freesurfer reading functions.
I attached a slightly-altered file named lh.data_crash which have the same problem. The other file named lh.data_nocrash seems to be parsed fine, despite differing by only 1 float-value somewhere in the middle of the data section. Original file was lh.area The mri_info command outputs some meaningless values; and the mris_calc command bails out. $ mri_info lh.data_crash WARNING: # of slices=-45 in header - assuming 124... Volume information for lh.data_crash type: unknown dimensions: 3391 x 2677 x 124 voxel sizes: -0.0000, -0.0000, -0.0000 type: SHORT (4) fov: 0.246 dof: 0 xstart: 548.5, xend: 5149214485235471024091229374082187264.0 ystart: -0.0, yend: -0.0 zstart: -1008284058362807724504196555655348224.0, zend: 0.0 ... $ mri_info lh.data_nocrash Volume information for lh.data_nocrash type: curv dimensions: 124254 x 1 x 1 voxel sizes: 1.0000, 1.0000, 1.0000 type: FLOAT (3) fov: 124254.000 dof: 0 xstart: -62127.0, xend: 62127.0 ystart: -0.5, yend: 0.5 zstart: -0.5, zend: 0.0 ... The difference between the two files are a single value change (4 bytes) at offset 1095 (15+4*1095'th byte), although other alteration are possible which avoid the crash too. This happens on Freesurfer version 5.3.0, and also 5.1.0, and 6-beta, on all arch i could test, which are RedHat 6.6 (64bits), Ubuntu 10.x (32bits), and MacOSX 10.8 (64bits) Note: to preserve privacy, the original map values have been replaced by a dummy 42.0 for most of the file, since i believe actual data is irrelevant here. I couldn't track the problem further, as i only have (stripped) binaries here.
lh.data_nocrash.gz
Description: GNU Zip compressed data
lh.data_crash.gz
Description: GNU Zip compressed data
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