SVMCrossVal.git

@@ -0,0 +1,4 @@

+function a = getArray(fieldhandle)

+str = get(fieldhandle,'String');

+a = eval([ '[' str ']' ]);

+end

\ No newline at end of file

@@ -1,3 +1,3 @@

 function r = getSearchlightRadius(model)

-r = getDouble(model.txtSearchlightRadius);

+r = getArray(model.txtSearchlightRadius);

 end

\ No newline at end of file

@@ -13,7 +13,7 @@ pstopts = args.psthOpts;

 pstopts.eventList = args.eventList;

 pstopts.sessionList = sessionlist;

-radius = fbsargs.radius;

+radiusList = fbsargs.radius;

 timeline = header.timeline;

 timeline.frameShiftStart = header.frameShift.frameShiftStart;

@@ -60,7 +60,7 @@ for s = 1:nSubjects

     indexToCoordMap = java.util.HashMap;

     coordToIndexMap = java.util.HashMap;

     for iVoxel = 1:nVoxel

-        coord = [x(iVoxel) y(iVoxel) z(iVoxel)]

+        coord = [x(iVoxel) y(iVoxel) z(iVoxel)];

         a = java.util.Vector(3,0);

         a.add(0,coord(1));

         a.add(1,coord(2));

@@ -104,7 +104,7 @@ for s = 1:nSubjects

     pause(0.001) % flush system event queue (respond to ctrl-c)

     tic

-    display(sprintf('rastering %g coordinates with approx. %g mm radius',nVoxel,radius));

+    display(sprintf('rastering %g coordinates',nVoxel));

     % for each timeslice

     globalStart     = timeline.psthStart;

     globalEnd       = timeline.psthEnd;

@@ -134,6 +132,7 @@ if isempty( fbsargs.timeline )

 	fbsTimeLine = 1:nSamplePoints;

     fbsTimeLine = fbsTimeLine +globalStart;

 else 

+    %preferred!

 	fbsTimeLine = fbsargs.timeline;

 end

@@ -144,16 +142,18 @@ end

     frameStartIdx  = floor(-globalStart+1+timeShiftIdx - 0.5*decodeDuration);

     frameEndIdx    = min(ceil(frameStartIdx+decodeDuration + 0.5*decodeDuration),-globalStart+globalEnd);

-        img3D = zeros(size(mask_image)); %output image prepare

+        for r = radiusList

+            img3D{r} = zeros(size(mask_image)); %output image prepare

+        end

         for iVoxel = 1:nVoxel % linear structure avoids 3D-Loop.

             if (mod(iVoxel,100)== 0)

                 display(sprintf('Status: %03u / %03u Timepoints, %05u / %05u Coordinates',find(fbsTimeLine == timeShiftIdx),length(fbsTimeLine),iVoxel,nVoxel));

                 pause(0.001) %flush system event queue

             end

+            for radius = radiusList

                 % get surrounding coordinate-IDs within radius

                 sphere = fbs_buildSphere(mapping,iVoxel,radius,vdim);

-%             pause

                 %build svm inputmatrix

                 svmdata = [];

@@ -180,18 +180,21 @@ end

                 decode = svm_single_crossval(svmlabel,svmdata,svmopts);

                 % save the decode value to the corresponding coordinate

-            coord = mapping.indexToCoordMap.get(iVoxel)

+                coord = mapping.indexToCoordMap.get(iVoxel);

                 x = coord(1);

                 y = coord(2);

                 z = coord(3);

-            img3D(x,y,z) = ((decode/100)-0.5)*2; % range [-1:1]

+                img3D{radius}(x,y,z) = ((decode/100)-0.5)*2; % range [-1:1]

+            end %for each radius

         end %for each voxel

-        nii = make_nii(img3D,vdim,mask_image.hdr.hist.originator(1:3),16,...

+        for radius = radiusList

+            nii = make_nii(img3D{radius},vdim,mask_image.hdr.hist.originator(1:3),16,...

                 sprintf('decode performance, time relative to onset: %g to %g sec',frameStartIdx,frameEndIdx));

-        save_nii(nii,fullfile(savePath,sprintf('%s-%03g',subjects{s}.name,timeShiftIdx)));

+            save_nii(nii,fullfile(savePath,sprintf('%s-r%g-t%+03g',subjects{s}.name,radius,timeShiftIdx)));

+        end

     end %for each timeslice

     display('rastering done');

     display(sprintf('result images saved to %s',savePath));