Changeset 905 for trunk/src/proj_field.m
 Timestamp:
 May 30, 2015, 8:44:20 PM (8 years ago)
 File:

 1 edited
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trunk/src/proj_field.m
r896 r905 522 522 function [ProjData,errormsg] = proj_line(FieldData, ObjectData) 523 523 % 524 525 %% prepare heading for the projected field 524 526 [ProjData,errormsg]=proj_heading(FieldData,ObjectData);%transfer global attributes 525 527 if ~isempty(errormsg) … … 544 546 ListIndex={}; 545 547 548 %% group the variables (fields of 'FieldData') in cells of variables with the same dimensions 549 [CellInfo,NbDim,errormsg]=find_field_cells(FieldData); 550 if ~isempty(errormsg) 551 errormsg=['error in proj_field/proj_line:' errormsg]; 552 return 553 end 554 CellInfo=CellInfo(NbDim==2); %keep only the 2D cells 555 %%%%%% TODO: treat 1D fields: project as identity so that P o P=P for projection operation 556 cell_select=true(size(CellInfo)); 557 558 for icell=1:length(CellInfo) 559 if isfield(CellInfo{icell},'ProjModeRequest') 560 if ~strcmp(CellInfo{icell}.ProjModeRequest, ProjMode) 561 cell_select(icell)=0; 562 end 563 if strcmp(ProjMode,'interp_tps')&& ~strcmp(CellInfo{icell}.CoordType,'tps') 564 cell_select(icell)=0; 565 end 566 end 567 end 568 if isempty(find(cell_select)) 569 errormsg=[' invalid projection mode ''' ProjMode ''': use ''interp_tps'' to interpolate spatial derivatives']; 570 return 571 end 572 CellInfo=CellInfo(cell_select); 546 573 547 574 %% projection line: object types selected from proj_field='line','polyline','polygon','rectangle','ellipse': … … 633 660 end 634 661 end 635 636 637 %% group the variables (fields of 'FieldData') in cells of variables with the same dimensions638 [CellInfo,NbDim,errormsg]=find_field_cells(FieldData);639 if ~isempty(errormsg)640 errormsg=['error in proj_field/proj_line:' errormsg];641 return642 end643 CellInfo=CellInfo(NbDim==2); %keep only the 2D cells644 %%%%%% TODO: treat 1D fields: project as identity so that P o P=P for projection operation645 662 646 663 %% loop on variable cells with the same space dimension 2 … … 1287 1304 Dist=Distx.*Distx+Disty.*Disty; 1288 1305 for ivar=1:numel(VarVal) 1289 VarVal{ivar}(Dist> 4*ProjData.CoordMesh)=NaN;% put to NaN interpolated positions too farfrom initial data1306 VarVal{ivar}(Dist>16*ProjData.CoordMesh)=NaN;% % put to NaN interpolated positions further than 4 meshes from initial data 1290 1307 end 1291 1308 … … 1325 1342 1326 1343 % set to NaN interpolation points which are too far from any initial data (more than 2 CoordMesh) 1327 if exist('scatteredInterpolant','file')%recent Matlab versions 1328 F=scatteredInterpolant(coord_X, coord_Y,coord_X,'nearest'); 1329 G=scatteredInterpolant(coord_X, coord_Y,coord_Y,'nearest'); 1330 else 1331 F=TriScatteredInterp([coord_X coord_Y],coord_X,'nearest'); 1332 G=TriScatteredInterp([coord_X coord_Y],coord_Y,'nearest'); 1333 end 1334 Distx=F(XI,YI)XI;% diff of x coordinates with the nearest measurement point 1335 Disty=G(XI,YI)YI;% diff of y coordinates with the nearest measurement point 1336 Dist=Distx.*Distx+Disty.*Disty; 1337 for ivar=1:numel(VarVal) 1338 VarVal{ivar}(Dist>4*ProjData.CoordMesh)=NaN;% put to NaN interpolated positions too far from initial data 1339 end 1340 1341 1344 Coord=permute(Coord,[1 3 2]); 1345 Coord=reshape(Coord,size(Coord,1)*size(Coord,2),2); 1346 if exist('scatteredInterpolant','file')%recent Matlab versions 1347 F=scatteredInterpolant(Coord,Coord(:,1),'nearest'); 1348 G=scatteredInterpolant(Coord,Coord(:,2),'nearest'); 1349 else 1350 F=TriScatteredInterp(Coord,Coord(:,1),'nearest'); 1351 G=TriScatteredInterp(Coord,Coord(:,2),'nearest'); 1352 end 1353 Distx=F(XI,YI)XI;% diff of x coordinates with the nearest measurement point 1354 Disty=G(XI,YI)YI;% diff of y coordinates with the nearest measurement point 1355 Dist=Distx.*Distx+Disty.*Disty; 1342 1356 ListVarName=(fieldnames(DataOut))'; 1343 1357 VarDimName=cell(size(ListVarName)); … … 1345 1359 VarName=ListVarName{ilist}; 1346 1360 ProjData.(VarName)=DataOut.(VarName); 1361 ProjData.(VarName)(Dist>16*ProjData.CoordMesh)=NaN;% put to NaN interpolated positions further than 4 meshes from initial data 1347 1362 VarDimName{ilist}={'coord_y','coord_x'}; 1348 1363 end
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