Tag: spatial

Feed: Planet PostgreSQL. PostGIS is a "geospatial database" and the "geo" in "geospatial" is an important qualifier: it means that all the coordinates in PostGIS point, lines, and polygons can be located somewhere on the earth ... Read More

Feed: R-bloggers. Author: Rstats on Jakub Nowosad's website. The raceland package implements a computational framework for a pattern-based, zoneless analysis and visualization of (ethno)racial topography.The main concept in this package is a racial landscape (RL). It consists of many large and small patches (racial enclaves) formed by adjacent raster grid cells having the same race categories. The distribution of racial enclaves creates a specific spatial pattern, which can be quantified by two metrics (entropy and mutual information) derived from the Information Theory concept (IT). Entropy is the measure of racial diversity and mutual information measures racial segregation.Methods in the raceland ... Read More

Feed: R-bloggers. Author: R by R(yo). As the monsoon season (finally) ends, another TokyoR meetup! Since COVIDhit all of TokyoR’s meetups since February have been done online and thetransition has been seamless thanks to the efforts of the TokyoRorganizing team. It was my first TokyoR since January so it was greatto be back!In line with my previous round up posts:I will be going over around half of all the talks. Hopefully, my effortswill help spread the vast knowledge of Japanese R users to the wider Rcommunity. Throughout I will also post helpful blog posts and links fromother sources if you ... Read More

Feed: AWS Compute Blog. Author: James Beswick. Many web developers use relational databases to store and manage data in their web applications. As you migrate to a serverless approach for web development, there are also other options available. These can help improve the scale, performance, and cost-effectiveness of your workloads. In this blog post, I highlight use-cases for different serverless database services, and common patterns useful for web applications.Using Amazon RDS with serverless web applications You can access Amazon RDS directly from your AWS Lambda functions. The RDS database, such as Amazon Aurora, is configured within the customer VPC. The ... Read More

Feed: R-bloggers. Author: Corey S. Sparks, Ph.D.. Model setupWe have a count outcome (deaths and births), in counties over time, and a set of time-constant covariates.We have several options in the GLM framework with which to model these data, for example:Binomial – [y_{ij} sim Bin(pi_{ij}) text{: } logit(pi_{ij} ) = beta_{0}+ x'beta_k ]Poisson – [y_{ij} sim Pois(lambda_{ij} E_{ij}) text{: } log(lambda_{ij} ) = log(E_{ij}) + beta_{0}+ x'beta_k ]Negative Binomial – [y_{ij} sim text{Neg Bin} (mu_{ij}, alpha, E_{ij}) text{: } log(mu_{ij} ) = log(E_{ij}) + beta_{0}+ x'beta_k ]In addition to various zero-inflated versions of these data.## `stat_bin()` using `bins = 30` ... Read More

Feed: AWS Public Sector Blog. Author: AWS Public Sector Blog Team. Photo by Ant Rozetsky on Unsplash As a physical oceanographer focused on remote sensing, Dr. Chelle Gentemann, senior scientist at Farallon Institute, has worked for over 20 years on retrievals of ocean temperature from space. She uses measurements of sea surface temperature from satellites to understand how the ocean impacts our lives. Chelle’s work requires analysis of large volumes of data, which requires access to large data storage and computational resources. Although most large research institutions can secure those IT resources, that is not the case for smaller organizations ... Read More

Feed: R-bloggers. Author: R on Dominic Royé. [This article was first published on R on Dominic Royé, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.I recently created a visualization of the distribution of river flow directions and also of coastal orientations. Following its publication in social networks (here), I was asked to make a post about how I did it. Well, here we go to start with an example of rivers, coastal orientation is ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: Sharmistha Chatterjee. Traditional vs Deep Learning Algorithms in the Telecom Industry — Cloud Architecture and Algorithm Categorization Google Cloud Architecture for Machine Learning Algorithms in the Telecom Industry Introduction The unprecedented growth of mobile devices, applications, and services have placed the utmost demand on mobile and wireless networking infrastructure. Rapid research and development of 5G systems have found ways to support mobile traffic volumes, real-time extraction of fine-grained analytics, and agile management of network resources, so as to maximize user experience. Moreover, inference from heterogeneous mobile data from distributed devices experiences ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: Sharmistha Chatterjee. Motivation There are five types of traditional time series models most commonly used in epidemic time series forecasting, which includes Autoregressive (AR), Moving Average (MA), Autoregressive Moving Average (ARMA), Autoregressive Integrated Moving Average (ARIMA), and Seasonal Autoregressive Integrated Moving Average (SARIMA) models. AR models express the current value of the time series linearly in terms of its previous values and the current residual, whereas MA models express the current value of the time series linearly in terms of its current and previous residual series. ARMA models are a combination of AR and MA models, in which the current ... Read More

Feed: Recent Announcements. Oracle has recently announced the Oracle Spatial capabilities for Oracle Standard Edition 2 (SE2). Amazon RDS for Oracle now supports the installation of the Oracle Spatial option for database instances running on SE2.  Oracle Spatial offers capabilities to store, retrieve, and query spatial data from an Oracle database. To learn how to enable SPATIAL option for your Amazon RDS for Oracle DB instance, please refer to the documentation ... Read More