PIVMat Function Reference<< Prev | Next >> 
Loads vector/image fields

F = loadvec(FILENAME) loads the vector/image field(s) matching FILENAME 
into a PIVMat structure array F. 
Supported file formats are: 
  DaVis (LaVision)                      .VC7, .TXT 
  Insight (TSI)                         .VEC 
  DynamicStudio (Dantec)                .TXT, .MAT 
  OpenPIV (A. Liberzon)                 .VEC, .TXT 
  PIVLab (W. Thielicke)                 .MAT 
  PIV plugin for ImageJ (NIH)           .TXT 
  VidPIV (Oxford Laser)                 .DAT, .TXT 
  MatPIV (J. Kristian Sveen)            .MAT 
  DPIVSoft (Meunier & Leweke)           .MAT 
  any vector field saved from vec2mat   .MAT 
  Images from DaVis (LaVision)          .IMX, IMG, IM7 
  Set of vector fields from DaVis       .SET 
  Vector field from Optical Flow        .CM0, UWO 
  AVI/MP4 movies                        .AVI, MP4 
Note: When used with DaVis files, loadvec needs the READIMX package 
from LaVision to be installed. See the installation procedure of 
PIVMat. See vec2mat to convert DaVis files into Mat-files in 
order to load them on systems without ReadIMX. 
The PIVMat structure array F can be displayed using showf. See the page 
'Importing data into PIVMat' in the PIVMat documentation browser to 
learn more about loadvec. 
A file may also be loaded by clicking on the Current Directory browser 
(but multiple file selection is not allowed). 
loadvec without input argument first opens a dialog box for file 
To load more than one file into a structure array, you may use 
wildcards ('*') in the filename, e.g., loadvec('B*.vc7'). Chained 
wildcards may also be used in directory names, e.g. 
For file enumeration, use the bracket ([]) syntax in the filename. 
For example, F = loadvec('B[2:2:6].vc7') loads the files 'B00002.vc7', 
'B00004.vc7', 'B00006.vc7'. See rdir for more details about the bracket 
F = loadvec(NUM) loads the file number NUM from the current directory 
(works in alphanumeric order, only for VEC/VC7 and IMX/IM7 files). 
NUM may be a simple number or any valid MATLAB vector (e.g., 1:10, 
[1 10], 2:2:8, 10:-1:1, etc.) 
If FILENAME is a cell array, (e.g. {'B1.vc7','B2.vc7'}), then loadvec 
loads all the files in the structure array F. Each string in the cell 
array may contain wildcards ('*') and brackets ([]). 
loadvec(...,'verbose') displays the file names being loaded. 
loadvec file_name or loadvec('file_name') without output argument is a 
shortcut for showf(loadvec('file_name')). 
For vector fields, the PIVMat structure F contains the following fields: 
   x,y         vectors containing the X and Y coordinates 
   vx,vy (vz)  matrices of the x, y (and z) components of the velocity 
   ysign       string, upward or downward Y axis 
   namevx, unitvx, namex, unitx...   strings 
   name        name of the VEC/VC7 file from which originates V 
   setname     name of the parent directory (called 'SET' in DaVis) 
   Attributes  Additional informations from DaVis (see getattribute) 
   choice      An array of 6 integers, giving the 1st, 2nd, 3rd, 4th 
               choice vectors, the number of filled/processed vectors 
               and the number of missing vectors. 
   history     Remind from which command V has been obtained 
For scalar fields, the PIVMat structure is identical, except that vx 
and vy are replaced by w (idem for namevx,...) 
   loadvec B00001.vc7 
See Also
showf, rdir, loadarrayvec, vec2mat, convert3dto2df, 
filterf, vec2scal, batchf, zerotonanfield, nantozerofield. 
Published output in the Help browser 
   showdemo loadvec 

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