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ufwrite

Purpose

Write to a Universal File.

Syntax

ufwrite(FileName,UFS,i)
ufwrite(FileName,model)

Description

You can export to UFF using the feplot and iiplot export menus.
ufwrite(FileName,UFS,i) appends the dataset i from a curve stack UFS to the file FileName. For details on curve stacks see section 2.1.2. ufwrite(FileName,model) can be used to export FEM models.

For datasets representing

• models, ufwrite writes a UFF of type 15 for the nodes and a trace line (UFF 82) for test wire frames (all EGID negative) or without FEMLink. With FEMLink, nodes are written in UFF 2411 format and elements in UFF 2412.
• response data, ufwrite writes a response at DOF (UFF 58) for each column of the response set.
• shape data, ufwrite writes a data at nodal DOF (UFF 55) for each row in the shape data set.

Starting from scratch, you define an curve stack DB=xfopt('empty'). You can then copy data sets from the stack XF (previously initialized by iiplot or xfopt) using DB(i)=XF(j). You can also build a new data set by giving its fields (see xfopt for the fields for the three supported dataset types). The following would be a typical example

 UF=xfopt('empty')
 UF(1)={'node',FEnode,'elt',FEelt};
 UF(2)={'w',IIw,'xf',IIxf};
 UF(3)={'po',IIres,'res',IIres,'dof',XFdof};

Once the curve stack built, ufwrite('NewFile',UF,1:3) will write the three datasets.

With iiplot, you can use the standard database wrapper XF to change properties as needed then write selected datasets to a file. For example,

 tname=nas2up('tempname .uf');
 [ci,XF]=iicom('curveload','gartid');
 XF(1).x='frequency'; % modify properties, see xfopt('_datatype')
 XF(1).yn='accele';    
 iicom('sub');         % reinitialize plot to check
 ufwrite(tname,XF,1);
 % write a model
 XF(7)=demosdt('demo gartte');ufwrite(tname,XF,7);
 % write a time trace
 C1=fe_curve('TestRicker .6 2',linspace(0,1.2,120));
 XF(8)={'w',C1.X,'xf',C1.Y};
 XF(8).x='time';          % see xfopt('_datatype')
 XF(8).yn='Acceleration'; % see xfopt('_datatype') 
 XF(8).fun=[1];           % see xfopt('_funtype')
 ufwrite(tname,XF,8);
 UFS=ufread(tname); % reread the UFF to check result

Note that you can edit these properties graphically in the iiplot properties ... figure.

See also

ufread, iiplot, nasread