diff --git a/snpm_auto.m b/snpm_auto.m
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+++ b/snpm_auto.m
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+function matlabbatch = snpm_auto(SPM,varargin)
+% Converts existing parametric SPM analysis' SPM.mat into a job structure
+% FORMAT job = snpm_auto(SPM,[dir,nPerm,vFWHM,bVol])
+%_______________________________________________________________________
+% Arguments
+%     SPM    - SPM structure or filepath to SPM.mat, to be base of new SnPM run
+%     dir    - Directory where new SnPM to be run
+%     nPerm  - Number of permutations to use
+%     vFWHM  - Variance FWHM smoothing (a 3 vector; defaults to [0 0 0])
+%     bVol   - Use 3D (1) or 2D (0) processing
+%
+
+if nargin>=2; dir=varargin{1};   else dir=''; end
+if nargin>=3; nPerm=varargin{2}; else nPerm=[]; end
+if nargin>=4; vFWHM=varargin{3}; else vFWHM=[]; end
+if nargin>=5; bVol=varargin{4};  else bVol=[]; end
+
+snpm_defaults
+
+if ~isstruct(SPM)
+  load(SPM)
+end
+% Set up 'default' job structure, with as much from SPM.mat as possible
+job = JobDefault(SPM,dir,nPerm,vFWHM,bVol);
+  
+
+%
+% Decide what type of plug it is!
+% 
+
+X  = SPM.xX.X;
+Design = SPM.xsDes.Design;
+iid = IsIID(SPM);
+ErrMsg = '';
+
+if IsLevel1(SPM) 
+
+  ErrMsg = 'First level fMRI time series model detected';
+
+% One-sample t-test
+% snpm_pi_OneSampT.m
+elseif strcmp(Design,'One sample t-test')
+
+  if ~iid
+    ErrMsg = 'One-sample model detected, but has dependence or het. var.';
+  else
+    job.DesignName = 'MultiSub: One Sample T test on differences; 1 condition';
+    job.DesignFile = 'snpm_pi_OneSampT';
+  end
+
+% Two-sample t-test
+% snpm_pi_TwoSampT.m
+elseif strcmp(Design,'Two-sample t-test')
+
+  if ~iid
+    ErrMsg='Two-sample model detected, but has dependence or het. var.';
+  else
+    job.DesignName = '2 Groups: Two Sample T test; 1 scan per subject';
+    job.DesignFile = 'snpm_pi_TwoSampT';
+  end
+  
+% Paired t-test
+% snpm_pi_PairT.m
+elseif strcmp(Design,'Paired t-test')
+
+  % Should always be iid
+
+  job.DesignName = 'MultiSub: Paired T test; 2 conditions, 1 scan per condition';
+  job.DesignFile = 'snpm_pi_PairT';
+  
+% Is it a between-subject ANOVA?
+% snpm_pi_ANOVAbtwnS.m
+elseif strcmp(Design,'ANOVA')
+
+  if ~iid
+    ErrMsg='ANOVA (between subjects) model detected, but has dependence or het. var.';
+  else
+    job.DesignName = 'Between Subject ANOVA, k groups, 1 scan per subject';
+    job.DesignFile = 'snpm_pi_ANOVAbtwnS';
+  end
+
+% Is it a within-subject ANOVA?
+% snpm_pi_ANOVAwithinS.m
+elseif strcmp(Design,'ANOVA - within subject')
+
+  % Works even with dependence
+  job.DesignName = 'Within Subject ANOVA, k diffs/contrasts per subject';
+  job.DesignFile = 'snpm_pi_ANOVAwithinS';
+
+% Is it a simple correlation
+% snpm_pi_Corr.m
+elseif (size(X,2)==2 && sum(all(diff(X)==0))==1) 
+
+  if ~iid
+    ErrMsg='Simple correlation model detected, but has dependence or het. var.';
+  else
+    job.DesignName = 'MultiSub: Simple Regression (correlation); single covariate of interest, 1 scan per subject';
+    job.DesignFile = 'snpm_pi_Corr';
+  end
+
+% % Simple correlation extracted from a multiple regression
+% % snpm_pi_Corr.m
+% elseif strcmp(Design,'Multiple regression')
+% 
+%   % If you can find any singleton T contrasts that are *not* on the
+%   % intercept... go for it
+% 
+%   if ~iid
+%     ErrMsg='Simple correlation (simple regression) model detected, but has dependence or het. var.';
+%   else
+%     job.DesignName = '';
+%     job.DesignFile = '';
+%   end
+
+end
+
+if ~isempty(job.DesignName) 
+  fprintf(['Design detected: ' job.DesignName]);
+elseif ~isempty(ErrMsg)
+  error(ErrMsg)
+else
+  error(['Design not compatible (' Design ')']);
+end
+
+% Don't worry about these:
+% snpm_pi_TwoSampPairT.m  --  Within subject ANOVA (2 obs) + between subject factor (2 levels)
+% snpm_pi_TwoSampTss.m    --  Single subject two-sample T, for PET (has EBs)
+% snpm_pi_Corr1S.m        --  Single subject correlation, for PET (has EBs)
+% snpm_pi_PairTrand.m     --  Paired T-test, randomisation instead of permutation
+
+end
+
+matlabbatch{1}.spm.tools.snpm.des.OneSampT = job;
+
+return
+
+function job = JobDefault(SPM,dir,nPerm,vFWHM,bVol)
+global SnPMdefs
+
+cov = struct('c',[],...
+	     'cname','');
+masking = struct('tm',struct('tm_none',1),...
+		 'im',1,...
+		 'em',{{''}});
+globalm = struct('gmsca',struct('gmsca_no',1),...
+		 'glonorm',1);
+job.DesignName = '';
+job.DesignFile = '';
+job.dir = {};
+job.P = {};
+job.cov = repmat(cov,0,0);
+job.nPerm = SnPMdefs.nPerm;
+job.vFWHM = [0 0 0];
+job.bVolm = SnPMdefs.bVolm;
+job.ST = struct('ST_none',0);
+job.masking = masking;
+job.globalc = struct('g_omit',1);
+job.globalm = globalm;
+
+% Set stuff from SPM.mat -- or options set by user
+
+if isempty(dir)
+  job.dir = {fullfile(SPM.swd,'SnPM')};
+else
+  job.dir = {dir};
+end
+if ~isempty(nPerm)
+  job.nPerm = nPerm;
+end
+if ~isempty(vFWHM);
+  job.vFWHM = vFWHM;
+end
+if ~isempty(bVol)
+  job.bVol = bVol;
+end
+
+job.P = SPM.xY.P;
+
+return
+
+function Test = IsIID(SPM)
+
+if ~isfield(SPM,'xVi')
+  Test = true
+elseif ~isfield(SPM.xVi,'Vi')
+  Test = true;
+elseif length(SPM.xVi.Vi)==1 && all(all(full(SPM.xVi.Vi{1})==eye(size(SPM.xVi.Vi{1}))))
+  Test = true;
+else
+  Test = false;
+end
+
+return
+
+function Test = IsLevel1(SPM)
+
+Test = isfield(SPM.xY,'RT');
+
+return