I hereby claim:
- I am dirkschumacher on github.
- I am dirks (https://keybase.io/dirks) on keybase.
- I have a public key ASDroBuw_-Dy6s_YoGdf-7cyfLipgEXNflEyoE27_cc14Ao
To claim this, I am signing this object:
= Donations to German parties | |
data from here: https://github.com/pudo/kompromatron | |
== Sample Data Set | |
//setup | |
[source,cypher] | |
---- | |
LOAD CSV WITH HEADERS FROM "https://raw.githubusercontent.com/pudo/kompromatron/master/data/spenden.csv" AS data | |
WITH data SKIP 0 LIMIT 375 | |
MERGE (p:Party { name: data.partei_name, acronym: data.partei_acronym}) |
= The news reads us data in Neo4J | |
Data by: http://newsreadsus.okfn.de/ | |
== Intro | |
Interesting data created by http://newsreadsus.okfn.de/. | |
I converted the data from the links.json file and converted it into two simple csv files. | |
//setup | |
[source,cypher] | |
---- | |
LOAD CSV FROM "https://dl.dropboxusercontent.com/s/riz5hp32mz0jzed/sites.csv?dl=1" AS csvline |
# Use this code if you use the official BVG Berlin app | |
# I only tested it with credit card billing | |
# The BVG sends you an email for every purchase you make. | |
# The following code tries to find all those mails and analyzes them. | |
library(gmailr) | |
library(purrr) | |
library(stringr) | |
library(lubridate) |
I hereby claim:
To claim this, I am signing this object:
# Bug report | |
# It seems variable bounds are ignored when using binary variables "B". | |
# It works as expected if variables of type "I" are used | |
library(ROI) | |
library(ROI.plugin.glpk) | |
# max: x1 + x2 + x3 + x4 | |
# s.t. x1 + x2 + x3 + x4 <= 4 |
# LICENSE MIT | |
# Data from RKI with special Terms | |
library(dplyr) | |
library(readr) | |
library(tidyr) | |
# go to https://survstat.rki.de/Content/Query/Create.aspx | |
# Selected calendar weeks for rows and diseases for columns. | |
# had to manually edit, because not a valid csv |
# based on a article from here https://dirkschumacher.github.io/ompr/articles/problem-graph-coloring.html | |
library(maptools) | |
library(dplyr) | |
# CC by | |
# license here https://github.com/berlinermorgenpost/Berlin-Geodaten | |
map_data <- rgdal::readOGR("https://github.com/berlinermorgenpost/Berlin-Geodaten/raw/master/berlin_bezirke.geojson", "OGRGeoJSON") | |
# this gives as an adjancy list |
# based on the formulation from here | |
# http://wwwhome.math.utwente.nl/~uetzm/do/IP-FKS.pdf | |
library(magrittr) | |
# devtools::install_github("dirkschumacher/ompr@milp") | |
library(ompr) | |
max_colors <- 10 | |
n <- 100 | |
# variables n * max_colors |
This vignettes discribes the modelling techniques available in ompr
to
make your life easier when developing a mixed integer programming model.
You can think of a MIP Model as a big constraint maxtrix and a set of
vectors. But you can also think of it as a set of decision variables, an
objective function and a number of constraints as
equations/inequalities. ompr
implements the latter approach.
# based on a article from here https://dirkschumacher.github.io/ompr/articles/problem-graph-coloring.html | |
library(maptools) | |
library(dplyr) | |
# devtools::install_github("dirkschumacher/ompr@milp") | |
# CC by | |
map_data <- rgdal::readOGR("https://raw.githubusercontent.com/nvkelso/natural-earth-vector/master/geojson/ne_50m_admin_0_countries.geojson", "OGRGeoJSON") |