Revision as of 11:30, 19 May 2010 by
- 1 Basic Information
- 2 Catchwords
- 3 Short Description of Functionality
- 4 Program(s) to run before this Program
- 5 Program(s) to run after this Program
- 6 Additional Information
Name of Program
hydrodynamical finite element method
visualization of hydrodynamic data
Short Description of Functionality
The program LQ2PRO visualizes calculated data along user-defined profiles. Calculated data could be achieved by numerical models (such as TRIM-2D, TRIM-3D or TELEMAC-2D). Also cross sectionally averaged data may be used as well as results from different other postprocessors (TDKWF, TDKVF, etc.).
New in version 6.1 (April 2003)
Synoptic data sets related to a morphodynamic bathymetry can now be displayed correctly.
New in version 5.3 (February 2002)
Changing the direction of x axis visualization
Each profile has its own direction, defined by the sequence of its location points. This direction is the default direction when visualising profile data on a profile axis (x axis). With the version 5.3 it is possible to reverse (invert) this direction:
- In the plot attributes file (filetype lq2attr.dat) it is possible to change the default direction (x-direction = normal) to x-direction = inverse for all visualized profiles.
- During the execution of the program it is possible to change the x-direction attribute (use the Edit Prfs switch). Note: The x-direction attribute is a picture attribute, so it is only possible to change the direction of all profiles of all charts of the selected picture/s.
Hint: This direction reversal is only possible within the LQ visualization mode; there is no sense of using it in the D visualization mode.
New in version 5 (april 2000)
Vector component visualization
Now you can plot not only the absolute value of vector data, but you can pick one of the following components:
- x-component of vector data
- y-component of vector data
- z-component of vector data (only accessible for 3D input data)
- absolute value of vector data
- direction of vector data in x/y plane
- direction of vector data out of x/y plane (only accessible for 3D input data)
- profile parallel component of vector data
- profile orthogonal (right angled) component of vector data
There are two sample graphics prepared for you.
- (req) general input data (filetype lq2pro.dat)
- (req) profile-topography (filetype profil05.bin)
- (req) results (files of type dirz.bin.r, dirz.bin.i and dirz.bin)
- (opt) 2 dimensional finite-element-grid (filetype gitter05.dat/bin)
- (opt) list of neighbour elements suitable to the finite-element-grid (filetype fkez.bin)
- (req) layout file (filetype layout.dat)
- (req) colourfile (filetype lights.dat)
- (req) colours file (file of type colors.dat)
- (opt) user defined plot attributes (filetype lq2attr.dat)
- (opt) descriptions of all geo positions for all profiles to reduce the number geo position descriptions along a profile (filetype gprofil.dat)
- (opt) frame file (filetype frames.dat)
- (optional) definition of desired points of time (filetype zeitpunkte.dat)
- (optional) GKS log file (filetype gkslog.dat)
- Notice: if within the working directory a file with the name gkslog.dat exists, the stored information about a former LQ2PRO application run is used to rerun the recorded one in precisely the same way.
- graphics output to the screen
- (optional) plot metafiles (GKS, CGM, HPGL and others)
- (optional) GKS log file (filetype gkslog.dat)
- Notice: This file is used to record all interactive user input for a complete LQ2PRO application run. This file can be used at a later stage to rerun the whole session in exactly the same way. This can be profitably used to produce for example the same type of figures for a different set of data files.
- (optional) results of a profile analysis in a file (filetype prf.analyse.dat)
select data These steps are necessary to choose data:
- choose your data variant (actual state, different states...)
- choose your profile out of a set of profiles defined for the chosen variant
- choose your physical data
- choose time steps for the chosen physical data, if time steps exist
- choose the vertical layer for the chosen physical data, if different layers exist
visualization of profile curves: There are two different ways of visualizing profile curves:
- LQ-visualization: the profile curves are plotted in xy-diagrams. This is the usual way of visualizing longitudinal/cross-sectional profiles and the default type of visualization. (sample of a LQ-visualization)
- D-visualization: view from atop of the surface to the ground. The diagrams are turned into the drawing plane. (sample of a D-visualization)
Program(s) to run before this Program
Program(s) to run after this Program
GKS (graphical kernel system)
see also $PROGHOME/examples/Lq2pro/
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