3dMVM *+ WARNING: mri_fdrize: will not process only 0 values (min=20)

Greetings AFNI experts- I am having a bit of trouble running a 3dMVM script. When I run the following script:


3dMVM -prefix Fdb_Novel_Chosen_ZNB_ZIT_all_mod -jobs 7	\
-bsVars 'ZNB+ZIT'					\
-wsVars 'Condition' \
-qVars 'ZNB,ZIT' \
-mask Mask_TT_caez_colin27_T1_18_resample+tlrc.BRIK	\
-dataTable @datatable.txt

I get the following output from 3dMVM:


*+ WARNING: mri_fdrize: will not process only 0 values (min=20)
++ Smallest FDR q [0 (Intercept) F] = 0
*+ WARNING: mri_fdrize: will not process only 0 values (min=20)
++ Smallest FDR q [1 ZNB F] = 0
*+ WARNING: mri_fdrize: will not process only 0 values (min=20)
++ Smallest FDR q [2 ZIT F] = 0
*+ WARNING: mri_fdrize: will not process only 0 values (min=20)
++ Smallest FDR q [3 Condition F] = 0
*+ WARNING: mri_fdrize: will not process only 0 values (min=20)
++ Smallest FDR q [4 ZNB:Condition F] = 0
*+ WARNING: mri_fdrize: will not process only 0 values (min=20)
++ Smallest FDR q [5 ZIT:Condition F] = 0

Congratulations! You have got an output Fdb_Novel_Chosen_ZNB_ZIT_all_mod+tlrc.

Warning messages:
1: Missing values for following ID(s):
1021, 1070, 1084, 1085, 1093, 1099, 1101, 1104, 1109, 1110, 1111, 1113, 1119, 1120, 1121, 1122, 1123, 1124, 1125, 1127, 1128, 1131, 1133, 1134, 1135, 1139, 1142, 1147, 1148, 1149, 1151, 1152, 1154, 1157, 1162, 1164, 1165, 1166, 1167, 1168, 1169, 1170, 1171, 1175, 1176, 1177, 1178, 1179, 1180, 1181, 1183, 1185, 1186, 1187, 1188, 1191, 1196, 1197, 1198, 1200, 1204, 1205, 1208, 1209, 1210, 1211, 1214, 1216, 1217, 1226, 1227, 1229, 1235, 1236, 1237, 1238, 1239, 1241, 1244, 1245, 1249, 1251, 1254, 1258, 1259, 1264, 1269, 1270, 1272, 1274, 1276, 1278, 1279, 1280, 1282, 1283, 1285, 1287, 1288, 1289, 2023, 2024, 2046, 2112, 2130, 2140, 2150, 2165, 2174, 2178, 2181, 2184, 2185, 2191, 2192, 2194, 2196, 2197, 2200, 2201, 2206, 2208, 2209, 2213, 2217, 2218, 2219, 2226, 2230, 2236, 2237, 2242, 2243, 2247, 2251, 2252, 2255, 2265, 2267, 2271, 2274, 2276, 2278, 2279, 2281, 2284, 2286, 2290, 2292, 2298, 2304, 2305, 2306, 2309, 2310, 2311, 2313, 2320, 2321, 2323, 2324 [... truncated] 
2: In summary.Anova.mlm(object$Anova, multivariate = FALSE) :
  Singular error SSP matrix:
non-sphericity test and corrections not available

When I open the brick and head files created by 3dMVM in the AFNI viewer they appear to be empty- wondering if anybody has gotten this error before when using 3dMVM and what folks have done to fix it? Thanks for your help!

What kind of mask do you have? Try running your 3dMVM without the mask, and then apply the mask on the output.

Thanks Gang! I’m using a whole brain mask- I’ll try to run without a mask and see if that helps.