Mesh Quality Analysis

Mesh Quality Analysis
Input files:

Mesh (.ELE and .Node-files, or .SHP-file) , DEM as .BIL-file, Velocity distribution .VEC-file after first calculations

Output files:

Saved in the folder of the input mesh.

[Inputfile]+.qual.csv   …   Mesh statistics

[Inputfile]+.qual.shp   …   Mesh with per cell quality information

Further explanation can be found in Chapter 6 of [...]

Convert mesh to grid

Convert Mesh to Grid and Subtract another Grid (optional)

Attributes from various files will be assigned to triangles of a mesh. The mesh,  given with .ELE + .NODE  files  will be rasterized and saved as .BIL-file(s) in an output folder. The distance between 2 grid points in x or y direction is given by [...]

Refine an existing MESH

Refine an Existing Mesh

An existing mesh,  given with .ELE + .NODE + .POLY files will be refined according to one of the following options until the maximum number of refinement steps is reached.

Option 1:  Refine a mesh dependent to already known velocity distributions and water level information

velocity and water level informations can be given as [...]

Build RELATIVE Digital Elevation Models

Build RELATIVE Digital Elevation Models

(currently only .BIL-Files)

For all values Z(x,y) in a DEM the following filter rule is applied:

1. Calculating the mean Elevation Z_mean(x,y)
within a Radius R

2. Z_relative(x,y) = Z(x,y) – Z_mean(x,y)

Radius R:

The radius influences the position of  the local extreme values. Good results can be achieved by using the average [...]

Clean Digital Elevation Models

Clean Digital Elevation Models

(currently only .BIL-Files)

Many digital elevation models still have some errors, like gaps with no data values or trees, cables etc.
This simple tool will replace obviously wrong elevation data values with interpolated values from its neighbourhood.

For all values Z(x,y) in a DEM
the following filter rule is applied:

1. Calculating the mean Elevation Z_mean within [...]

DEM Conversion

Convert Digital Elevation Models into .BIL-FILES

Use single files or whole folders.

If your Elevation Data is stored in files other then 32 BIT – .BIL (Band Interleaved by Line), you can convert your data easily by using the GDAL Library (www.GDAL.org).