From b86ee2c4b41d1b990072ed2ea0703ec07949d5f5 Mon Sep 17 00:00:00 2001 From: rcarto Date: Wed, 6 Sep 2017 10:19:42 +0200 Subject: [PATCH] CRAN submission --- DESCRIPTION | 2 +- NEWS | 5 +++-- vignettes/SpatialPosition.Rmd | 3 +-- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/DESCRIPTION b/DESCRIPTION index 2d47073..02f7a1e 100644 --- a/DESCRIPTION +++ b/DESCRIPTION @@ -1,7 +1,7 @@ Package: SpatialPosition Title: Spatial Position Models Version: 1.2.0 -Date: 2017-08-01 +Date: 2017-09-06 Authors@R: c( person("Timothée", "Giraud", email = "timothee.giraud@cnrs.fr", role = c("cre","aut")), person("Hadrien", "Commenges", email = "hcommenges@parisgeo.cnrs.fr", role = c("aut")), diff --git a/NEWS b/NEWS index 510a8e8..e21d327 100644 --- a/NEWS +++ b/NEWS @@ -1,5 +1,5 @@ -SpatialPosition version 1.1.2 (Release date: ) +SpatialPosition version 1.2.0 (Release date: 2017-09-06) ============== Major changes: @@ -11,10 +11,11 @@ Major changes: Minor changes: * (Re)introduce a longlat param in stewart, mcStewart, huff and reilly to select between eucliean and great circles distances. * Add a bypassctrl param in stewart, huff and reilly to allow computations on large datasets -* Describe default grid resolution * More points in the default mask of raster poly * Rewrite of CreateGrid and rasterToContourPoly functions + + SpatialPosition version 1.1.1 (Release date: 2016-06-07) ============== diff --git a/vignettes/SpatialPosition.Rmd b/vignettes/SpatialPosition.Rmd index 6b22719..a47af4e 100644 --- a/vignettes/SpatialPosition.Rmd +++ b/vignettes/SpatialPosition.Rmd @@ -19,8 +19,7 @@ Modeling spatial interactions is used to understand and quantify the level of in 2. Corresponent **mathematical formalization**: $T_{ij} = S_i D_j / d_{ij}^2$ the trade flow between units *i* and *j* ($T_{ij}$) is proportional to the supply of unit *i* ($S_i$) and the demand of unit *j* ($D_j$) and inversely proportional to the squared distance between both units ($d_{ij}^2$). 3. **Informatic formalization** of the model: language, algorithms, etc. -The most ancient and common spatial interactions model is of the gravity form (like below). It has roots in the late 19st century (Casey, Ravenstein) and has been used in several fields (geography, economy, demography) to model a high variety of flows (commuting, trade, migrations). A brief presentation can be found in the [Geography of transport systems](http://people.hofstra.edu/geotrans/eng/methods/ch5m1en.html). For a detailed one see, among many others, the book of Fotheringham and O'Kelly, *Spatial Interaction Models: Formulations and Applications* (Kluwer Academic Publishers, 1989). In French you can found pedagogic materials on the [website of Pr. Grasland](http://grasland.script.univ-paris-diderot.fr) - +The most ancient and common spatial interactions model is of the gravity form (like below). It has roots in the late 19st century (Casey, Ravenstein) and has been used in several fields (geography, economy, demography) to model a high variety of flows (commuting, trade, migrations). A brief presentation can be found in the [Geography of transport systems](http://people.hofstra.edu/geotrans/eng/methods/ch5m1en.html). For a detailed one see, among many others, the book of Fotheringham and O'Kelly, *Spatial Interaction Models: Formulations and Applications* (Kluwer Academic Publishers, 1989). ### Place-based models: Stewart, Reilly, Huff