Changes between Version 128 and Version 129 of UvmatHelp


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Timestamp:
Jan 13, 2015, 7:16:16 PM (6 years ago)
Author:
sommeria
Comment:

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  • UvmatHelp

    v128 v129  
    943943 * ro2_patch: smoothing coefficient rho used for patch2
    944944
    945 -'''List of field variables (old CIVx conventions):''' A set of velocity vectors is defined by a 1D array of position coordinates x, y, and z for 3D civ, and a corresponding array for each of the velocity components u, v, and w for 3C civ. The field is therefore defined on an arbitrary set of point, without restriction to a regular mesh. Additional arrays are used to keep track of the quality of the PIV process leading to each vector. The image correlation maximum is represented by vec_C (a real number between 0 and 1). A flag vec_F represents a warning on the vector quality (see the list of values below). Another flag FixFlag marks false vectors: !FixFlag=0 for good vectors, and FixFlag is set to a non-zero value when it has been detected as false (using a 'fix' operation).
     945-'''List of field variables (old CIVx conventions):''' a set of velocity vectors is defined by a 1D array of position coordinates x, y, and z for 3D civ, and a corresponding array for each of the velocity components u, v, and w for 3C civ. The field is therefore defined on an arbitrary set of point, without restriction to a regular mesh. Additional arrays are used to keep track of the quality of the PIV process leading to each vector. The image correlation maximum is represented by vec_C (a real number between 0 and 1). A flag vec_F represents a warning on the vector quality (see the list of values below). Another flag FixFlag marks false vectors: !FixFlag=0 for good vectors, and FixFlag is set to a non-zero value when it has been detected as false (using a 'fix' operation).
    946946
    947947The names of the fields (variables) resulting from each operation are given in the following table. Each column corresponds to an operation. 'filter1' and 'interp1' both result from the patch1 interpolation on the same points, with and without smoothing respectively. The first line is the name of the constant representing the number of vectors (the dimension of the arrays). The next successive lines indicate the variable names for the position and velocity components, the image correlation 'c', the 'flag' about civ quality and 'fix' flag (only available for civ1 and civ2), and the spatial derivatives obtained from the patch operations.
     
    10091009 * 'view_field';...% function for visualisation of projected fields'
    10101010
    1011 === Functions activated by mouse and keybord in GUI : ===
     1011=== Functions activated by mouse and keybord in GUI ===
    10121012 * 'keyboard_callback';... % function activated when a key is pressed on the keyboard
    10131013 * 'mouse_down';% function activated when the mouse button is pressed on a figure (callback for '!WindowButtonDownFcn')
     
    10221022 * 'RUN_STLIN';...% combine 2 displacement fields for stereo PIV * 'sub_field';...% combine the two input fields,
    10231023
    1024 === convert and I/O functions: ===
     1024=== convert and I/O functions ===
    10251025 * 'cell2tab';... % transform a Matlab cell in a character array suitable for display in a table
    10261026 * 'fill_GUI';... % fill a GUI with handles 'handles' from input data Param
     
    10381038 * 'xml2struct'...% read an XML file as a Matlab structure, converts numeric character strings into numbers
    10391039
    1040 === ancillary functions: ===
     1040=== ancillary functions ===
    10411041 * 'activate';...% emulate the mouse selection of a GUI element, for demo
    10421042 * 'calc_field_interp': defines fields (velocity, vort, div...) from civ data and calculate them for projection with linear interpolation