{"id":23065790,"url":"https://github.com/konrad1991/dsa2a","last_synced_at":"2026-05-19T10:03:17.065Z","repository":{"id":108851094,"uuid":"572401733","full_name":"Konrad1991/dsa2a","owner":"Konrad1991","description":"Experimenting with ast2ast in deSolve","archived":false,"fork":false,"pushed_at":"2023-08-15T08:45:31.000Z","size":1159,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2025-02-08T22:25:25.634Z","etag":null,"topics":["desolve","ode","ode-solver","r"],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/Konrad1991.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2022-11-30T07:36:44.000Z","updated_at":"2023-08-15T08:45:34.000Z","dependencies_parsed_at":"2025-02-08T22:35:17.433Z","dependency_job_id":null,"html_url":"https://github.com/Konrad1991/dsa2a","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Konrad1991%2Fdsa2a","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Konrad1991%2Fdsa2a/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Konrad1991%2Fdsa2a/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Konrad1991%2Fdsa2a/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/Konrad1991","download_url":"https://codeload.github.com/Konrad1991/dsa2a/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":246970337,"owners_count":20862508,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["desolve","ode","ode-solver","r"],"created_at":"2024-12-16T05:10:07.750Z","updated_at":"2026-05-19T10:03:16.994Z","avatar_url":"https://github.com/Konrad1991.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"## Using ast2ast in deSolve\n\n- experimenting with ast2ast in deSolve\n\n```R\n#Rcpp::compileAttributes(\"dsa2a\")\ninstall.packages(\"dsa2a\", type = \"source\", repos = NULL)\n.rs.restartR()\n\nlibrary(dsa2a)\nlibrary(deSolve)\nlibrary(scatterplot3d)\n\nLorenz \u003c- function(t, state, parameters) {\n  with(as.list(c(state, parameters)), {\n    dX \u003c- a * X + Y * Z\n    dY \u003c- b * (Y - Z)\n    dZ \u003c- -X * Y + c * Y - Z\n    list(c(dX, dY, dZ))\n  })\n}\n\nparameters \u003c- c(a = -8/3, b = -10, c =  28)\nstate \u003c- c(X = 1, Y = 1, Z = 1)\ntimes \u003c- seq(0, 100, by = 0.01)\n\nout \u003c- ode(y = state, times = times, func = Lorenz, parms = parameters)\nplot(out)\nscatterplot3d(out[,-1], type=\"l\")\n\nout \u003c- ode(state, times, func = \"derivs\", parms = parameters,\n           dllname = \"dsa2a\", initfunc = \"initmod\")\nplot(out)\nscatterplot3d(out[,-1], type=\"l\")\n\nout \u003c- ode(state, times, func = \"derivs_a2a\", parms = parameters,\n           dllname = \"dsa2a\", initfunc = \"initmod_a2a\")\nplot(out)\nscatterplot3d(out[,-1], type=\"l\")\n\nmicrobenchmark::microbenchmark(\n  out \u003c- ode(y = state, times = times, func = Lorenz, parms = parameters),\n  out \u003c- ode(state, times, func = \"derivs\", parms = parameters, dllname = \"dsa2a\", initfunc = \"initmod\"),\n  out \u003c- ode(state, times, func = \"derivs_a2a\", parms = parameters, dllname = \"dsa2a\", initfunc = \"initmod_a2a\"))\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkonrad1991%2Fdsa2a","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fkonrad1991%2Fdsa2a","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkonrad1991%2Fdsa2a/lists"}