# Version history

### Version 2.0

#### New features

- Grouping patches in meta-patches
- Graph clustering by modularity index
- Removing patches whose capacity is too low
- Circuit theory on the graph : CF metric and distance matrix
- Corridors (command line only)

#### Improvements

- Habitat can be defined by several landscape categories
- Patch addition is also available in graphical interface
- Least cost paths may take into account slope
- Automatic conversion of metric distance to "cost" distance

### Version 1.2

#### New features

- Graphab can be used in command line interface
- Patch addition (command line only)

#### Improvements

- Intra patch distances calculation is more accurate (but slows down path metrics calculation)
- Least cost paths calculation is more accurate (but uses twice as much memory)
- TIF images of 1, 2, 4 bits are now supported for landscape map
- Path metrics have been optimized for disconnected graphs (F, S#F, FPC, Ec, CCe, BC, PC, GD, dPC)
- After metric calculation (local, component and delta), the graph with the new metric is automatically drawn
- External cost raster are now supported for calculating capacity patch, adding points set and SDM
- Spatial data are saved with the coordinate system of the landscape map

#### Bug fixes

- Error "Raster is not writable" at project creation was corrected
- Metrics F, S#F and dPC did not include paths with zero length, in case of Euclidean link set with 4 connex project
- Removal of variability on graph pathfinder when two edges have the same length
- Removal of variability on MST graph creation when two edges have the same length

### Version 1.1