| 76 | | In the past year of development, there were several changes in different GRASS GIS libraries. The most relavant changes are described below: |
| 77 | | * support for PROJ 5 |
| | 76 | In the past year of development, there were several changes in different GRASS GIS libraries. The most relevant changes are described below: |
| | 77 | * A new raster compression method has been added: ZSTD ([http://www.zstd.net/ ZSTD], [https://github.com/facebook/zstd ZSTD on github]). ZSTD is an improvement over ZLIB's deflate method, providing both faster and higher compression than ZLIB. |
| | 78 | * support for PROJ 5: previously, reprojection from one CRS to another CRS used WGS84 as pivot datum: CRS1 -> WGS84 -> CRS2. This method provided reasonable results and allowed for reprojection on-the-fly. However, using a fixed pivot datum has been regarded as a suboptimal solution for coordinate reprojection, therefore a new mechanism has been introduced in PROJ 5, where custom pipelines for coordinate conversion and transformation can be defined. Together with the new PROJ 5+ API, this pipeline mechanism is now supported. Custom coordinate conversion/transformation pipelines can now be defined for raster and vector reprojection. |
