allow art to evaluate images containing nans
allow art to evaluate images containing nans

git-svn-id: 24f545668198cdd163a527378499f2123e59bf9f@1485 ead46cd0-7350-4e37-8683-fc4c6f79bf00

JohnGriffiths/nipype,sgiavasis/nipype,mick-d/nipype,mick-d/nipype_source,blakedewey/nipype,rameshvs/nipype,Leoniela/nipype,mick-d/nipype_source,iglpdc/nipype,gerddie/nipype,dmordom/nipype,blakedewey/nipype,gerddie/nipype,carolFrohlich/nipype,christianbrodbeck/nipype,wanderine/nipype,wanderine/nipype,iglpdc/nipype,glatard/nipype,FredLoney/nipype,fprados/nipype,pearsonlab/nipype,fprados/nipype,JohnGriffiths/nipype,satra/NiPypeold,mick-d/nipype,Leoniela/nipype,carlohamalainen/nipype,fprados/nipype,dgellis90/nipype,Leoniela/nipype,rameshvs/nipype,blakedewey/nipype,mick-d/nipype_source,carolFrohlich/nipype,arokem/nipype,FredLoney/nipype,sgiavasis/nipype,arokem/nipype,christianbrodbeck/nipype,dmordom/nipype,carlohamalainen/nipype,dmordom/nipype,JohnGriffiths/nipype,grlee77/nipype,carlohamalainen/nipype,sgiavasis/nipype,grlee77/nipype,iglpdc/nipype,gerddie/nipype,arokem/nipype,carolFrohlich/nipype,blakedewey/nipype,carolFrohlich/nipype,mick-d/nipype,wanderine/nipype,FCP-INDI/nipype,glatard/nipype,arokem/nipype,sgiavasis/nipype,grlee77/nipype,rameshvs/nipype,dgellis90/nipype,glatard/nipype,gerddie/nipype,FCP-INDI/nipype,glatard/nipype,FCP-INDI/nipype,iglpdc/nipype,wanderine/nipype,grlee77/nipype,dgellis90/nipype,mick-d/nipype,FCP-INDI/nipype,dgellis90/nipype,satra/NiPypeold,FredLoney/nipype,rameshvs/nipype,JohnGriffiths/nipype,pearsonlab/nipype,pearsonlab/nipype,pearsonlab/nipype