MIKE SHE - Using ArcGIS
MIKE SHE has been designed to work smoothly with ArcGIS files. In
most cases, distributed data can be linked directly to shape
files created by ArcGIS or any other application. The type of
shape file depends on the type of data. Distributed data, such as
initial water levels can be input as point and line themes,
whereas spatial data that is referenced to a time series, such as
precipitation, can be added as a polygon theme. In this case,
each polygon can be assigned a time series of values.
In the reverse direction, all gridded data in the MIKE SHE Setup
Editor can be easily saved as a point theme shape file from the
pop-menu when you right click on a colour shaded map (see below).
This includes both interpolated data in the Setup tab and
pre-processed data in the Pre-processed tab.
ArcGIS grids yet cannot be added directly in the MIKE SHE Setup
Editor, but they can be converted to the dfs2 file format. Select
New, then the MIKE Zero Tool box and choose GIS in the list. The
Grid2Mike tool will convert your ArcGIS grid files to
the dfs2 file format. Support for native ArcGIS grid files will
be available in a service pack later this year.
The MIKE Zero Tool box also contains tools for converting dfs2
files to ArcGIS shape files (Mike2Shp) and Grid files (Mike2Grd).
These tools can be useful if you have manipulated your grid files
in the MIKE Zero Grid Editor, since it does not directly support
shape file export. Alternatively, you can open any dfs2 file in
the MIKE SHE Setup Editor, as along as the unit type is the same)
and then use the right mouse function to export to a shape file.
If you want to convert a dfs3 file to a shape file or a grid file
then you will need to extract a dfs2 file from the dfs3 first
using the 2D Grid from 3D file tool that is found under
the Extraction item in the MIKE Zero Toolbox.
Some items in the MIKE SHE Setup Editor do not support shape
files. Mostly these are related to integer grid codes, such as
Drain codes. In this case, it is difficult to assign integer
values based on grid independent polygons. In a complex setup, it
would be very difficult to control which cells are being assigned
to which code when the polygons do not coincide with the cell
boundaries. In some areas, the model results could be very
sensitive to the code assigned.
If you have any questions about the use of ArcGIS files in MIKE
SHE, or any suggestions on how to improve such support, please do
not hesitate to contact your local DHI.
