Sensor Web, Geoprocessing, Security & GeoRM, Geostatistics, Semantics, 3D, Ilwis, Earth Observation

Extending the geostatistical capabilities of ArcGIS via the R-bridge with R, Shiny and gstat

July 19th, 2017 @ 08:20 by Benedikt Graeler
Posted in 52°North, Geostatistics

Screenshot of ArcGIS along with the interactive kriging Shiny app.

ArcGIS is the central tool to handle and derive geoinformation in many applications. However, the standard kriging capabilities only include a few covariance functions and hide the estimation and fit quality of the semivariogram to a large degree. R is less appealing for working with maps, but features a variety of statistical, i.e. geostatistical, extensions. In this showcase, we exploit the semivariogram modeling and kriging capabilities of the gstat R package. In order to give the user visual control over the estimation procedure and the model selection, we use the Shiny framework to realize an interactive graphical user-interface for the semivariogram fitting step. This tool hides the entire R implementation from the user, but delivers a good deal of the geostatistical power to perform kriging. (more…)

Advanced time series analysis on the web with R

April 22nd, 2015 @ 11:25 by Daniel Nuest
Posted in Communities, Geostatistics, Sensor Web

Today we want to present one of the latest open source projects that brings together expertise from the Geostatistics and Sensor Web communities. The new web application sensorweby successfully integrates the 52°North JavaScript SOS Client with the analytical powers of R and creates a new and completely open source software solution to create advanced analysis and visualizations of time series data.

Find out more about the project on GitHub or Open HUB and try out the examples pages on the Geostaticstics Community Demo Server and 52°North contributor IRCEL-CELINE.
(more…)

Trajectory Analysis in R – Final Post

September 24th, 2013 @ 09:22 by JinlongYang
Posted in 52°North, Communities, Geostatistics, GSoC

A final wrap up of the Google Summer of Code project: Trajectory Analysis in R can be found in RPubs here.

Trajectory Analysis in R

June 20th, 2013 @ 11:19 by JinlongYang
Posted in Geostatistics, GSoC

This week, we will have one blog post by each of this year’s Google Summer of Code students presenting their project and themselves. Jinlong follows Kahlid and Patrick.

Trajectory analysis has a wide range of applications in various fields such as geoscience and social science. Use cases span across mobile phone users (see image below) e.g. for commuting analysis, ship and flight paths or animal tracking. With the avalanche of GPS-annotated data in the past few years capturing such data became much easier, so today there is a need for tools that are specifically tailored for analyzing large-scale trajectory data (example).

Trajectory data, Microsoft Research.

Trajectory data collected from mobile phone users in Beijing. Credit: Microsoft Research.

R, as a software environment for statistical computing and graphics, has been favored by researchers from various disciplines for its free access, rich statistical methods, and easy-to-share features. However, the classes and methods specifically developed for trajectory analysis are limited and domain-orientated in R. This project intends to address this issue by implementing and improving generic classes and methods for trajectory analysis. (more…)

Welcome Google Summer of Code 2013 students!

May 29th, 2013 @ 10:17 by Ann Hitchcock
Posted in Geoprocessing, Geostatistics, GSoC, Sensor Web

52°North is pleased to welcome the following students to work with us closely this summer on four Google Summer of Code projects!

  1. Mohammad Ahmed Hamed Yakoub (from Cairo, Egypt) will tackle the ” Open Sensor Search” project (Sensor Web Community) and implement a one stop shop for finding sensor data.
  2. Khalid Alqinyah (from Riyadh, Saudi Arabia) will spend the summer working on the “52°North Processing Server Admin Interface” (Geoprocessing Community) and transfer the current HTML/JSP approach to a modern and flexible web application framework.
  3. Patrick Noble (from San Luis Obispo, CA, USA) will make seismic data from a variety of different sources available through the SOS  in the “Seismic Data Modeling in SOS” (Sensor Web Community) project.
  4. Jinlong Yang (From State College, PA, USA) will implement and/or improve generic classes, methods and tools for handling and analyzing large-scale trajectory data with R in the “Trajectory Analysis in R” (Geostatistics Community).

The community bonding period has just begun. During this time, students get to know their mentors, read documentation, get up to speed to begin working on their projects. Programming will start mid-June. We really look forward to working with them on these exciting projects! Expect a few blog posts by every student and find out more about the projects in the wiki.

The whole Google Summer of Code program received 5999 proposals from 4,144 students for 177 mentoring organizations (source). 52°North received 17 proposal submissions (2012: 35 – which is related to Google significantly reducing the number of proposals allowed per student). We at 52°North are extremely happy that, same as last year, we received four slots and were able to match them with four promising students to work on challenging projects across three communities!

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