changeset 54:4fef33632323

(none)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Problems/private/completeOps.m	Mon Mar 14 16:53:56 2011 +0000
@@ -0,0 +1,78 @@
+function data = completeOps(data)
+
+%   Copyright 2008, Ewout van den Berg and Michael P. Friedlander
+%   http://www.cs.ubc.ca/labs/scl/sparco
+%   $Id: completeOps.m 1040 2008-06-26 20:29:02Z ewout78 $
+
+operators = {};
+flagM = 0; if isfield(data,'M'), flagM = 1; end;
+flagB = 0; if isfield(data,'B'), flagB = 1; end;
+
+if (~flagM) && (~flagB)
+   error('At least one of the operators M or B has be to given.');
+end
+
+% Define measurement matrix if needed
+if ~flagM
+  info   = data.B([],0);
+  data.M = opDirac(info{1});
+else
+  operators{end+1} = data.M;
+end
+
+% Define sparsity basis if needed
+if ~flagB
+  info   = data.M([],0);
+  data.B = opDirac(info{2});
+else
+  operators{end+1} = data.B;
+end
+
+% Define operator A if needed
+if ~isfield(data,'A')
+  if (length(operators) > 1)
+     data.A = opFoG(operators{:});
+  else
+     data.A = operators{1};
+  end
+end
+
+% Define empty solution if needed
+if ~isfield(data,'x0')
+  data.x0 = [];
+end
+
+% Define the operator size and string
+opInfo       = data.A([],0);
+data.sizeA   = [opInfo{1},opInfo{2}];
+opInfo       = data.B([],0);
+data.sizeB   = [opInfo{1},opInfo{2}];
+opInfo       = data.M([],0);
+data.sizeM   = [opInfo{1},opInfo{2}];
+data.op.strA = opToString(data.A);
+data.op.strB = opToString(data.B);
+data.op.strM = opToString(data.M);
+
+% Get the size of the desired signal
+if ~isfield(data,'signalSize')
+   if ~isfield(data,'signal')
+     error(['At least one of the fields signal ', ...
+            'or signalSize must be given.']);
+   end
+   data.signalSize = size(data.signal);
+end
+
+% Reconstruct signal from sparse coefficients
+if ~isfield(data,'reconstruct')
+   data.reconstruct = @(x) reshape(data.B(x,1),data.signalSize);
+end
+
+% Reorder the fields (sort alphabetically)
+m = fieldnames(data);
+m = sort(m);
+dataReorder = struct();
+for i=1:length(m)
+  eval(sprintf('dataReorder.%s = data.%s;',m{i},m{i}));
+end
+
+data = dataReorder;