Package: fmesher 0.1.7
Finn Lindgren
fmesher:Triangle Meshes and Related Geometry Tools
Generate planar and spherical triangle meshes, compute finite element calculations for 1- and 2-dimensional flat and curved manifolds with associated basis function spaces, methods for lines and polygons, and transparent handling of coordinate reference systems and coordinate transformation, including 'sf' and 'sp' geometries. The core 'fmesher' library code was originally part of the 'INLA' package, and implements parts of "Triangulations and Applications" by Hjelle and Daehlen (2006) <doi:10.1007/3-540-33261-8>.
Authors:
fmesher_0.1.7.tar.gz
fmesher_0.1.7.tar.gz(r-4.5-noble)fmesher_0.1.7.tar.gz(r-4.4-noble)
fmesher_0.1.7.tgz(r-4.4-emscripten)fmesher_0.1.7.tgz(r-4.3-emscripten)
fmesher.pdf |fmesher.html✨
fmesher/json (API)
NEWS
| # Installfmesher in R: |
| install.packages('fmesher',repos = c('https://cran.r-universe.dev', 'https://cloud.r-project.org')) |
Bug tracker:https://github.com/inlabru-org/fmesher/issues
- fmexample - Example mesh data
Last updated 4 days agofrom:31d0eef603
Exports:fm_as_bboxfm_as_dgCMatrixfm_as_dgTMatrixfm_as_fmfm_as_fmesher_sparsefm_as_inla_meshfm_as_inla_mesh_segmentfm_as_lattice_2dfm_as_lattice_2d_listfm_as_listfm_as_mesh_1dfm_as_mesh_1d_listfm_as_mesh_2dfm_as_mesh_2d_listfm_as_segmfm_as_segm_listfm_as_sfcfm_as_sp_crsfm_as_tensorfm_as_tensor_listfm_as_unpackedMatrixfm_baryfm_basisfm_bboxfm_blockfm_block_evalfm_block_log_shiftfm_block_log_weightsfm_block_logsumexp_evalfm_block_prepfm_block_weightsfm_call_stackfm_caller_namefm_centroidsfm_containsfm_covariancefm_cprodfm_crsfm_CRSfm_CRS_as_listfm_crs_boundsfm_crs_detect_manifoldfm_crs_get_ellipsoid_radiusfm_crs_get_lengthunitfm_crs_get_wktfm_crs_is_geocentfm_crs_is_identicalfm_crs_is_nullfm_crs_obliquefm_crs_oblique<-fm_crs_projection_typefm_crs_set_ellipsoid_radiusfm_crs_set_lengthunitfm_crs<-fm_CRSargsfm_CRSargs_as_listfm_delaunay_2dfm_detect_manifoldfm_diameterfm_doffm_ellipsoid_radiusfm_ellipsoid_radius<-fm_evaluatefm_evaluatorfm_evaluator_latticefm_evaluator_mesh_1dfm_evaluator_mesh_2dfm_extensionsfm_femfm_generate_colorsfm_has_PROJ6fm_identical_CRSfm_intfm_int_mesh_2dfm_int_mesh_2d_corefm_int_multi_samplerfm_is_bndfm_is_bnd<-fm_is_withinfm_lattice_2dfm_length_unitfm_length_unit<-fm_listfm_list_as_CRSfm_manifoldfm_manifold_dimfm_manifold_typefm_matern_precisionfm_matern_samplefm_mesh_1dfm_mesh_2dfm_mesh_2d_inlafm_mesh_2d_mapfm_mesh_2d_map_limfm_mesh_intersectionfm_nonconvex_hullfm_nonconvex_hull_inlafm_nonconvex_hull_inla_basicfm_pixelsfm_proj4stringfm_raw_basisfm_rcdt_2dfm_rcdt_2d_inlafm_refinefm_row_kronfm_safe_spfm_samplefm_segmfm_segm_contour_helperfm_segm_joinfm_segm_splitfm_simplifyfm_simplify_helperfm_sp_get_crsfm_sp2segmentfm_split_linesfm_spTransformfm_store_pointsfm_subdividefm_tensorfm_transformfm_try_callstackfm_unify_coordsfm_vertex_projectionfm_verticesfm_wktfm_wkt_as_wkt_treefm_wkt_get_ellipsoid_radiusfm_wkt_get_lengthunitfm_wkt_is_geocentfm_wkt_predeffm_wkt_projection_typefm_wkt_set_ellipsoid_radiusfm_wkt_set_lengthunitfm_wkt_tree_as_wktfm_wkt_tree_get_itemfm_wkt_tree_projection_typefm_wkt_tree_set_itemfm_wkt_unit_paramsfmesher_baryfmesher_femfmesher_globe_pointsfmesher_rcdtfmesher_spherical_bsplinesfmesher_spherical_bsplines1fmesher_split_linesgeom_fmlines_rgllocal_fm_testthat_assignlocal_fm_testthat_setuplocal_fm_testthat_tolerancesold_globeprojold_graticuleold_limitsold_outlineold_projectold_tissotplot_globeprojplot_PolySetplot_rgl
Dependencies:classclassIntcliDBIdplyre1071fansigenericsglueKernSmoothlatticelifecyclemagrittrMASSMatrixpillarpkgconfigproxyR6Rcpprlangs2sfsptibbletidyselectunitsutf8vctrswithrwk
Basic fmesher use
Rendered frombasic_use.Rmdusingknitr::rmarkdownon Jul 02 2024.Last update: 2023-08-25
Started: 2023-08-18
Converting legacy INLA mesh code to fmesher
Rendered frominla_conversion.Rmdusingknitr::rmarkdownon Jul 02 2024.Last update: 2023-08-25
Started: 2023-08-18
The fmesher C++ library
Rendered fromfmesher_library.Rmdusingknitr::rmarkdownon Jul 02 2024.Last update: 2023-08-18
Started: 2023-08-18
Readme and manuals
Help Manual
| Help page | Topics |
|---|---|
| Convert objects to fmesher objects | fm_as_fm fm_as_fm.CRS fm_as_fm.crs fm_as_fm.fm_bbox fm_as_fm.fm_crs fm_as_fm.fm_lattice_2d fm_as_fm.fm_mesh_1d fm_as_fm.fm_mesh_2d fm_as_fm.fm_segm fm_as_fm.fm_tensor fm_as_fm.inla.CRS fm_as_fm.inla.mesh fm_as_fm.inla.mesh.1d fm_as_fm.inla.mesh.lattice fm_as_fm.inla.mesh.segment fm_as_fm.NULL |
| Convert objects to 'fm_lattice_2d' | fm_as_lattice_2d fm_as_lattice_2d.fm_lattice_2d fm_as_lattice_2d.inla.mesh.lattice fm_as_lattice_2d_list |
| Convert objects to 'fm_segm' | fm_as_mesh_1d fm_as_mesh_1d.fm_mesh_1d fm_as_mesh_1d.inla.mesh.1d fm_as_mesh_1d_list |
| Convert objects to 'fm_mesh_2d' | fm_as_mesh_2d fm_as_mesh_2d.fm_mesh_2d fm_as_mesh_2d.inla.mesh fm_as_mesh_2d.sf fm_as_mesh_2d.sfc_MULTIPOLYGON fm_as_mesh_2d.sfc_POLYGON fm_as_mesh_2d.sfg fm_as_mesh_2d_list |
| Convert objects to 'fm_segm' | fm_as_segm fm_as_segm.fm_segm fm_as_segm.inla.mesh.segment fm_as_segm.Line fm_as_segm.Lines fm_as_segm.matrix fm_as_segm.Polygon fm_as_segm.Polygons fm_as_segm.sf fm_as_segm.sfc_GEOMETRY fm_as_segm.sfc_LINESTRING fm_as_segm.sfc_MULTILINESTRING fm_as_segm.sfc_MULTIPOLYGON fm_as_segm.sfc_POINT fm_as_segm.sfc_POLYGON fm_as_segm.sfg fm_as_segm.SpatialLines fm_as_segm.SpatialLinesDataFrame fm_as_segm.SpatialPoints fm_as_segm.SpatialPointsDataFrame fm_as_segm.SpatialPolygons fm_as_segm.SpatialPolygonsDataFrame fm_as_segm_list |
| Conversion methods from mesh related objects to sfc | fm_as_sfc fm_as_sfc.fm_mesh_2d fm_as_sfc.fm_segm fm_as_sfc.inla.mesh fm_as_sfc.inla.mesh.segment fm_as_sfc.sf fm_as_sfc.sfc |
| Convert objects to 'fm_tensor' | fm_as_tensor fm_as_tensor.fm_tensor fm_as_tensor_list |
| Compute barycentric coordinates | fm_bary fm_bary.fm_mesh_1d fm_bary.fm_mesh_2d fm_bary.inla.mesh fm_bary.inla.mesh.1d |
| Compute mapping matrix between mesh function space and points | fm_basis fm_basis.default fm_basis.fm_evaluator fm_basis.fm_mesh_1d fm_basis.fm_mesh_2d fm_basis.fm_tensor fm_basis.inla.mesh fm_basis.inla.mesh.1d |
| Bounding box class | c.fm_bbox fm_as_bbox fm_bbox fm_bbox.bbox fm_bbox.fm_bbox fm_bbox.fm_lattice_2d fm_bbox.fm_mesh_1d fm_bbox.fm_mesh_2d fm_bbox.fm_segm fm_bbox.fm_tensor fm_bbox.inla.mesh fm_bbox.inla.mesh.segment fm_bbox.list fm_bbox.Matrix fm_bbox.matrix fm_bbox.NULL fm_bbox.numeric fm_bbox.sf fm_bbox.sfc fm_bbox.sfg [.fm_bbox |
| Blockwise aggregation matrices | fm_block fm_block_eval fm_block_logsumexp_eval fm_block_log_shift fm_block_log_weights fm_block_prep fm_block_weights |
| Extract triangle centroids from an 'fm_mesh_2d' | fm_centroids |
| Check which mesh triangles are inside a polygon | fm_contains fm_contains.sf fm_contains.sfc fm_contains.Spatial |
| Obtain coordinate reference system object | $.fm_crs fm_crs fm_crs.character fm_crs.crs fm_crs.default fm_crs.fm_CRS fm_crs.fm_crs fm_crs.fm_lattice_2d fm_CRS.fm_list fm_crs.fm_list fm_crs.fm_mesh_2d fm_crs.fm_segm fm_crs.inla.CRS fm_crs.inla.mesh fm_crs.inla.mesh.lattice fm_crs.inla.mesh.segment fm_crs.matrix fm_crs.sf fm_crs.sfc fm_crs.sfg fm_crs.Spatial fm_crs.SpatRaster fm_crs.SpatVector fm_crs_oblique fm_wkt_predef st_crs.fm_crs |
| Create a coordinate reference system object | fm_CRS fm_CRS.CRS fm_CRS.crs fm_CRS.default fm_CRS.fm_CRS fm_CRS.fm_crs fm_CRS.fm_lattice fm_CRS.fm_mesh_2d fm_CRS.fm_segm fm_CRS.inla.CRS fm_CRS.inla.mesh fm_CRS.inla.mesh.lattice fm_CRS.inla.mesh.segment fm_CRS.matrix fm_CRS.sf fm_CRS.sfc fm_CRS.sfg fm_CRS.Spatial fm_CRS.SpatRaster fm_CRS.SpatVector is.na.fm_CRS is.na.inla.CRS |
| Check if two CRS objects are identical | fm_crs_is_identical fm_identical_CRS |
| Check if a crs is NULL or NA | fm_crs_is_null is.na.fm_crs |
| Handling CRS/WKT | fm_crs_bounds fm_crs_get_ellipsoid_radius fm_crs_get_lengthunit fm_crs_get_wkt fm_crs_is_geocent fm_crs_projection_type fm_crs_set_ellipsoid_radius fm_crs_set_lengthunit fm_crs_wkt fm_ellipsoid_radius fm_ellipsoid_radius.character fm_ellipsoid_radius.default fm_ellipsoid_radius<- fm_ellipsoid_radius<-.character fm_ellipsoid_radius<-.CRS fm_ellipsoid_radius<-.crs fm_ellipsoid_radius<-.fm_CRS fm_ellipsoid_radius<-.fm_crs fm_ellipsoid_radius<-.inla.CRS fm_length_unit fm_length_unit.character fm_length_unit.default fm_length_unit<- fm_length_unit<-.character fm_length_unit<-.CRS fm_length_unit<-.crs fm_length_unit<-.fm_CRS fm_length_unit<-.fm_crs fm_length_unit<-.inla.CRS fm_proj4string fm_wkt fm_wkt_get_ellipsoid_radius fm_wkt_get_lengthunit fm_wkt_is_geocent fm_wkt_projection_type fm_wkt_set_ellipsoid_radius fm_wkt_set_lengthunit fm_wkt_tree_projection_type fm_wkt_unit_params |
| Assignment operators for crs information objects | fm_crs<- fm_crs<-.fm_lattice_2d fm_crs<-.fm_list fm_crs<-.fm_mesh_2d fm_crs<-.fm_segm fm_crs<-.NULL fm_crs<-.sf fm_crs<-.sfc fm_crs<-.sfg fm_crs<-.Spatial fm_crs_oblique<- fm_crs_oblique<-.CRS fm_crs_oblique<-.crs fm_crs_oblique<-.fm_CRS fm_crs_oblique<-.fm_crs fm_crs_oblique<-.fm_lattice_2d fm_crs_oblique<-.fm_mesh_2d fm_crs_oblique<-.fm_segm fm_crs_oblique<-.inla.CRS fm_crs_oblique<-.NULL |
| Detect manifold type | fm_crs_detect_manifold fm_detect_manifold fm_detect_manifold.CRS fm_detect_manifold.crs fm_detect_manifold.fm_mesh_2d fm_detect_manifold.matrix fm_detect_manifold.numeric |
| Diameter bound for a geometric object | fm_diameter fm_diameter.fm_lattice_2d fm_diameter.fm_mesh_1d fm_diameter.fm_mesh_2d fm_diameter.fm_segm fm_diameter.inla.mesh fm_diameter.inla.mesh.1d fm_diameter.inla.mesh.lattice fm_diameter.inla.mesh.segment fm_diameter.matrix fm_diameter.sf fm_diameter.sfc fm_diameter.sfg |
| Function spece degrees of freedom | fm_dof fm_dof.fm_mesh_1d fm_dof.fm_mesh_2d fm_dof.fm_tensor |
| Methods for projecting to/from mesh objects | fm_evaluate fm_evaluate.default fm_evaluate.fm_evaluator fm_evaluator fm_evaluator.fm_mesh_1d fm_evaluator.fm_mesh_2d fm_evaluator.fm_tensor fm_evaluator.inla.mesh fm_evaluator.inla.mesh.1d fm_evaluator_lattice |
| Compute finite element matrices | fm_fem fm_fem.fm_mesh_1d fm_fem.fm_mesh_2d fm_fem.fm_tensor fm_fem.inla.mesh fm_fem.inla.mesh.1d |
| SPDE, GMRF, and Matérn process methods | fm_covariance fm_gmrf fm_matern_precision fm_matern_sample fm_sample |
| Multi-domain integration | fm_int fm_int.character fm_int.factor fm_int.fm_lattice_2d fm_int.fm_mesh_1d fm_int.fm_mesh_2d fm_int.inla.mesh fm_int.inla.mesh.1d fm_int.inla.mesh.lattice fm_int.list fm_int.numeric fm_int.SpatRaster |
| Query if points are inside a mesh | fm_is_within fm_is_within.default |
| Make a lattice object | fm_lattice_2d fm_lattice_2d.default |
| Handle lists of fmesher objects | c.fm_list fm_as_list fm_list [.fm_list |
| Query the mesh manifold type | fm_manifold fm_manifold_dim fm_manifold_type |
| Make a 1D mesh object | fm_mesh_1d |
| Make a 2D mesh object | fm_mesh_2d fm_mesh_2d_inla |
| Compute an extension of a spatial object | fm_extensions fm_nonconvex_hull fm_nonconvex_hull.matrix fm_nonconvex_hull.sf fm_nonconvex_hull.sfc fm_nonconvex_hull.sfg fm_nonconvex_hull.Spatial |
| Non-convex hull computation | fm_nonconvex_hull_inla fm_nonconvex_hull_inla_basic |
| Generate lattice points covering a mesh | fm_pixels |
| Basis functions for mesh manifolds | fm_raw_basis |
| Refined Constrained Delaunay Triangulation | fm_delaunay_2d fm_rcdt_2d fm_rcdt_2d_inla |
| Row-wise Kronecker products | fm_row_kron |
| Make a spatial segment object | fm_is_bnd fm_is_bnd<- fm_segm fm_segm.default fm_segm.fm_mesh_2d fm_segm.fm_segm fm_segm.fm_segm_list fm_segm.inla.mesh fm_segm.inla.mesh.segment fm_segm_join fm_segm_split |
| Methods for fm_segm lists | c.fm_segm c.fm_segm_list fm_segm_list [.fm_segm_list |
| Recursive curve simplification. | fm_simplify |
| Split lines at triangle edges | fm_split_lines fm_split_lines.fm_mesh_2d fm_split_lines.inla.mesh |
| Split triangles of a mesh into subtriangles | fm_subdivide |
| Make a tensor product function space | fm_tensor |
| Object coordinate transformation | fm_transform fm_transform.default fm_transform.fm_lattice_2d fm_transform.fm_list fm_transform.fm_mesh_2d fm_transform.fm_segm fm_transform.inla.mesh fm_transform.inla.mesh.lattice fm_transform.inla.mesh.segment fm_transform.matrix fm_transform.NULL fm_transform.sf fm_transform.sfc fm_transform.sfg fm_transform.Spatial |
| Extract vertex locations from an 'fm_mesh_2d' | fm_vertices |
| Barycentric coordinate computation | fmesher_bary |
| Finite element matrix computation | fmesher_fem |
| Globe points | fmesher_globe_points |
| Refined Constrained Delaunay Triangulation | fmesher_rcdt |
| Split lines at triangle edges | fmesher_split_lines |
| Deprecated functions in fmesher | fmesher-deprecated fm_as_inla_mesh fm_as_inla_mesh_segment fm_as_sp_crs fm_fallback_PROJ6 fm_has_PROJ6 fm_not_for_PROJ4 fm_not_for_PROJ6 fm_requires_PROJ6 fm_sp2segment fm_spTransform fm_spTransform.default fm_spTransform.inla.mesh fm_spTransform.inla.mesh.lattice fm_spTransform.inla.mesh.segment fm_spTransform.SpatialPoints fm_spTransform.SpatialPointsDataFrame fm_sp_get_crs |
| Print objects | fmesher-print print.fm_bbox print.fm_CRS print.fm_crs print.fm_mesh_1d print.fm_mesh_2d print.fm_segm print.fm_segm_list print.fm_tensor |
| Example mesh data | fmexample |
| ggplot2 geomes for fmesher related objects | geom_fm geom_fm.fm_mesh_1d geom_fm.fm_mesh_2d geom_fm.fm_segm |
| Plot a globeproj object | plot_globeproj |
| Low level triangulation mesh plotting | lines_rgl lines_rgl.fm_segm lines_rgl.fm_segm_list plot_rgl plot_rgl.fm_mesh_2d plot_rgl.fm_segm plot_rgl.fm_segm_list |
| Draw a triangulation mesh object | lines.fm_mesh_2d plot.fm_mesh_2d |
| Draw 'fm_segm' objects. | lines.fm_segm lines.fm_segm_list plot.fm_segm plot.fm_segm_list |
