Index: /trunk/src/get_field/FFT2.m
===================================================================
--- /trunk/src/get_field/FFT2.m	(revision 504)
+++ /trunk/src/get_field/FFT2.m	(revision 504)
@@ -0,0 +1,37 @@
+% 'FFT': calculate and display spectrum of the field selected in the GUI  get_field 
+%  GUI_input=FFT(hget_field)
+%
+% OUTPUT: 
+% GUI_input: option for display in the GUI get_field
+%
+%INPUT:
+% hget_field: handles of the GUI get_field
+%
+
+function SubField=FFT2(hget_field)
+%% set the input elements needed on the GUI get_field when the action is selected in the menu ActionName
+if ~exist('hget_field','var') % case with no input parameter 
+    SubField={'CheckPlot1D','off';...% enable simple x/y plot ('off'/'on')
+        'CheckScalar','on';...%  enable scalar selection('off'/'on')
+        'CheckVector','off'; ...%  enable vector selection('off'/'on')
+               '',''};
+        return
+end
+%%%%%%%%%%%%%%%%%%%%%%%%%
+
+[SubField,errormsg]=read_get_field(hget_field);
+SubField
+for ilist=1:numel(SubField.ListVarName)
+    if isfield(SubField.VarAttribute{ilist},'Role') && isequal(SubField.VarAttribute{ilist}.Role,'scalar')
+        VarName=SubField.ListVarName{ilist};
+        spec=abs(fft2(SubField.(VarName)-mean(mean(SubField.(VarName)))));
+        SubField.(VarName)=log(spec);
+    end
+end
+  
+if ~isempty(errormsg)
+    msgbox_uvmat('ERROR',['error in read_get_field input:' errormsg])
+    return
+end
+SubField
+