hi ziad,

i read an old post of your about creating an average surface to use as underlay for group maps etc. i followed this procedure, but the average inflated surface has been brutally smoothed and has lost most of its interetsing convexity.

i went to each subject and converted surfaces with:

ConvertSurface -i_fs lh6_std.inflated.asc -o_vec lh6_std.inflated_node.1D lh6_std.inflated_faceset.1D

where lh6 just means that it is the left hemi and i used -rd 6 in mapicosehedron

i then averaged these node files with:

1deval -a "030504js_uw_"$foo"_std.inflated_node.1D[0]" -b "030713sp_"$foo"_std.inflated_node.1D[0]" \
-c "031004mk_uw_"$foo"_std.inflated_node.1D[0]" -d "031009cd_"$foo"_std.inflated_node.1D[0]" \
-e "040314mf_uw_"$foo"_std.inflated_node.1D[0]" -f "040411bwf_uw_"$foo"_std.inflated_node.1D[0]" \
-g "040418ls_uw_"$foo"_std.inflated_node.1D[0]" -h "040829bw_uw_"$foo"_std.inflated_node.1D[0]" \
-i "040829dw_uw_"$foo"_std.inflated_node.1D[0]" -expr '(a+b+c+d+e+f+g+h+i)/9' > cts_"$foo"_std.inflated_node_col1

for each of three dimensions... and compiled a spec file after concatenation with 1dcat and quickspec:

1dcat cts_"$foo"_std.inflated_node_col1 cts_"$foo"_std.inflated_node_col2 \
cts_"$foo"_std.inflated_node_col3 > cts_"$foo"_std.inflated_node.1D

quickspec -tsn 1D inflated cts_"$foo"_std.inflated_node.1D 030713sp_"$foo"_std.inflated_faceset.1D \
-spec cts_"$foo"_std.spec

i used the triangualtion file of one of my suibjects...

there's no external curvature reference right? am i missing something obvious? has this worked for anyone?

thanks! i know this is from some old post, but i'm not sure what got resolved...

vitaly