The Fuzzy Inference System Library is where you load
*.fis files so that they are available for use in the
alculations tab of the
DEM Survey Properties dialog. In the FIS library, you can
Add new FIS,
Edit or configure an existing FIS and
Remove items from the library. The topics at left discuss each of these operations.
Adding an FIS to the Library
To add an existing FIS is easy. Note that by default, when you install GCD no FIS files are loaded in the library, but
two example FIS files are included in the user’s roaming folder. These can be found at:
c:\Users\<YourUsername>\AppData\Roaming\GCD\FIS Sample Files
The two FIS files provided are examples of two input FIS where the inputs are slope and point density, and the output is elevation uncertainty. We do not automtically load FIS files into GCD’s Survey library as users should excercise judgement and caution in applying, calibrating and developing appropriate fuzzy inference sytems.
How it Actually Works
When you add a FIS to the library, this video shows what actually happens to the
file, which is stored in your
Every time a FIS is added, another
Removing a FIS from the Library
Removing a FIS from the library is as simple as highlighting it and clicking remove. When you remove a FIS from the library, it only removes it from the listing here (i.e. it deletes the corresponding
entry in the
file. It does not delete the actual *.fis file from your computer.
Editing a FIS in FIS Library
FIS files (*.fis) are an ASCII text format file that is compatible with the Matlab’s Fuzzy Logic Toolbox and can be edited in a text editor (e.g. Notepad ++), in Matlab’s Fuzzy Logic Toolobx using their FIS Editor, or in GCD using the
Fuzzy Inference System Editor:
This video shows you how to edit an FIS using the Fuzzy Inference System Editor:
For more information on how fuzzy inference systems for elevation uncertainty work and can be created and modified, see the GCD Concept Reference documentation here.