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Archive for September, 2010

Embed A QR Position Code Losslessly Into A Geotagged Picture With QRStamper

Mike Lee’s QRStamper program will losslessly embed a QR code with the coordinate data for a geotagged photo into a copy of the photo. Just drag and drop the photo onto the program icon, and in the same directory as the original, QRStamper will create a copy of the photo with the QR code embedded at lower right:

2010-09-26_17-33-27_591-QR

Scan the QR code with an app like Android’s Barcode Scanner, and retrieve the geotagging coordinates:

qr_capture

The similar GeoStamper program embeds a standard geotagging icon losslessly into a photo copy, to indicate it’s geotagged:

untitled-1-geo

His GPStamper program, covered here a long time ago, which losslessly embedded actual coordinate/location data into a photo, is no longer free. However,  it still has a 30-day free trial, and “non-commercial scientific research or survey use is eligible for a free licensed version.”




Compare Geographic Areas With “How Big Really”

The previously-covered “Move Outlines” site let you trace a border around a geographical feature, then compare that border size with any other area in the world. The BBC’s Dimensions website (aka How Big Really) is a nice companion site; while it doesn’t let you draw your own border, it has pre-drawn areas covering a number of different topics, like Environmental Disasters:

garbagepatch

Ancient Worlds…

pyramids

Festivals and Spectacles …

burningman

… plus Space, Depth, The War on Terror, The Industrial Age, Battle Of Britain, and Cities In History. Great for getting a sense of scale.

Via Digital Geography.




Online Map Check And Area Calculator

Here’s a unique free web app from Underhill Geomatics Limited. The Online Map Check And Area Calculator lets you enter bearings and distances, say for the boundaries of a parcel/plot, check on their closure, plot the parcel/plot and calculate the area enclosed. Enter a starting coordinate, and get coordinates for every point entered by distance/bearing. Circular curves are supported by entering the center point of the curve and radius of curvature. Full instructions included on the main site page, and a sample dataset is preloaded into the data entry box:

sampledata

Press Calculate, and get the results:

sampleresults

Select and copy the data from the web page, and you can paste it into the desktop app of your choice, say a spreadsheet:

tabdata




The Big List Of GeoStatistical / GeoSpatial Analysis Software III – R to Z

Descriptions come from the software’s website or documentation. I’ll probably put biologically-oriented software in a separate series. Click on the program title to go to its website.

R … free software environment for statistical computing and graphics

Some links for geographically-related R resources and software:

GeoDa link page for geo-R resources

CRAN page – source for stat module binaries

CRAN page on spatial analysis modules for R – Good place to start looking for specific modules.

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Regional Crime Analysis Geographic Information System (RCAGIS)

The US Department of Justice Criminal Division GIS Staff, in conjunction with the Baltimore county Police department and the RCAS group, has developed a crime analysis system called RCAGIS (Regional Crime Analysis GIS). RCAGIS is an ESRI MapObjects® based system that is designed to facilitate the analysis of crime on a regional basis. RCAGIS also integrates the CrimeStat® spatial statistics software package developed by Ned Levine and Associates under a grant from the National Institute of Justice. The RCAGIS Crime Analysis System was designed specifically to assist in the analysis of crime incident data across jurisdictional boundaries.

Note: Requires ESRI MapObjects to be installed, and no longer under development.

Repast Simphony

Repast Simphony is a free and open source agent-based modeling toolkit that simplifies model creation and use … including 2D and 3D Geographical Information Systems (GIS) support

SANET: Spatial Analysis On Networks

SANET is a toolbox for analyzing events that occur on networks or alongside networks e.g., car crashes on roads and beauty parlors in downtown streets, respectively. Networks may be roads, rivers, pipe-lines, cables, etc. The user is supposed to use SANET for academic and educational purposes only.

ArcGIS extension only.

SaTScan

SaTScan™ is a free software that analyzes spatial, temporal and space-time data using the spatial, temporal, or space-time scan statistics. It is designed for any of the following interrelated purposes:

  • Perform geographical surveillance of disease, to detect spatial or space-time disease clusters, and to see if they are statistically significant.
  • Test whether a disease is randomly distributed over space, over time or over space and time.
  • Evaluate the statistical significance of disease cluster alarms.
  • Perform repeated time-periodic disease surveillance for early detection of disease outbreaks.

The software may also be used for similar problems in other fields such as archaeology, astronomy, botany, criminology, ecology, economics, engineering, forestry, genetics, geography, geology, history, neurology or zoology.

SGeMS

The Stanford Geostatistical Modeling Software (SGeMS) is an open-source computer package for solving problems involving spatially related variables. It provides geostatistics practitioners with a user-friendly interface, an interactive 3-D visualization, and a wide selection of algorithms.

Space-Time Analysis of Regional Systems (STARS)

Space-Time Analysis of Regional Systems (STARS) is an open source package designed for the analysis of areal data measured over time. STARS brings together a number of recently developed methods of space-time analysis into a user-friendly graphical environment offering an array of dynamically linked graphical views. It is intended to be used as an exploratory data analysis tool. STARS can also be used from the command line to support more flexible and specialized types of analyses by advanced users. As such STARS should appeal to a wide array of users. Written entirely in Python, STARS is crossplatform and easy to install (and expand).

Note: Alternate homepage link is given on the main page, but it leads to a page informing you that you don’t have Java 1.4.2 installed. Status of this program is unclear.

Spatial Analysis and Decision Assistance (SADA)

Spatial Analysis and Decision Assistance (SADA) is free software that incorporates tools from environmental assessment fields into an effective problem solving environment. These tools include integrated modules for visualization, geospatial analysis, statistical analysis, human health risk assessment, ecological risk assessment, cost/benefit analysis, sampling design, and decision analysis

Spatial Analysis Utilities

S.A.U. was developed for archaeological intersite studies. However archaeology is not the only discipline that study point distribution maps. This tool will help everybody that has to deal with point pattern analysis.

STEM: The Spatiotemporal Epidemiological Modeler Project

The Spatiotemporal Epidemiological Modeler (STEM) tool is designed to help scientists and public health officials create and use spatial and temporal models of emerging infectious diseases. These models can aid in understanding and potentially preventing the spread of such diseases.

VESPER: VARIOGRAM ESTIMATION AND SPATIAL PREDICTION PLUS ERROR

VESPER is a PC-Windows program developed by the Australian Centre for Precision Agriculture (ACPA) for spatial prediction that is capable of performing kriging with local variograms (Haas, 1990). Kriging with local variograms involves searching for the closest neighbourhood for each prediction site, estimating the variogram from the neighbourhood, fitting a variogram model to the data and predicting the value and its uncertainty. The local variogram is modelled in the program by fitting a variogram model automatically through the nonlinear least-squares method. Several variogram models are available, namely spherical, exponential, Gaussian and linear with sill. Punctual and block kriging is available as interpolation options. This program adapts itself spatially in the presence of distinct differences in local structure over the whole field.

Note: Nudgeware; doesn’t seem to be under development anymore.

WinBASP

The Bonn Archaeological Software Package (BASP) is a non-profit software project for and by archaeologists which has been developed cooperatively since 1973. It now includes more than 70 functions for seriation, clustering, correspondance analysis, and mapping tools for archaeologists working with IBM compatible PC’s under DOS and all versions of Windows.

No longer supported or maintained; authors suggest PAST as an alternative.




The Big List Of Geostatistical / Geospatial Analysis Software II – G to Q

Continued from Part I (A-F) yesterday. Descriptions come from the software’s website or documentation. I’ll probably put biologically-oriented software in a separate series. Click on the program title to go to its website.

GAM: Cluster hunting software

The Geographical Analysis Machine (GAM) is an attempt at automated exploratory spatial data analysis of point or small area data that is easy to understand. The purpose is to answer a simple practical question; where are clusters in geographical data? Please note it is an exploratory analysis and does not prove existence – clusters may, for example, be down to pockets of poor data or, very unusually, be due to just the random scattering of occurrences.

GeoBUGS

GeoBUGS has been developed by a team at the Department of Epidemiology and Public Health of Imperial College at St Mary’s Hospital London. It is an add-on to WinBUGS that fits spatial models and produces a range of maps as output.

GeoDA

Luc Anselin’s group at Arizona State University; hosts a number of geospatial analysis programs and web apps, including

  • Several versions of GeoDA (old Windows version, and newer multi-platform version (GeoDaSpace and GeoDaNet).
  • PySAL, a cross-platform library of spatial analysis functions written in Python.
  • A Web-Based Tool for Spatial Data Analysis (incl. weights conversion & transformation, spatial lag, smoothing, LISAs)
  • Java tools for spatial analysis: EB & SR smoothing, excess risk maps, global Moran scatterplot and spatial reference distribution

And more, including lots of documentation and links.

GeoVISTA Studio

GeoVISTA Studio is an open software development environment designed for geospatial data.Studio is a programming-free environment that allows users to quickly build applications for geocomputation and geographic visualization.

GRNN_2 -  General Regression Neural Networks

GRNN are a class of neural networks widely used for the continuous function mapping. They are based on a well known nonparametric (kernel) statistical estimators. An important advantage of the GRNN is that training is very fast.

GSLIB

GSLIB is an acronym for Geostatistical Software LIBrary. This name was originally used for a collection of geostatistical programs developed at Stanford University over the last 15 years.

GUIDOS

The software GUIDOS (Graphical User Interface for the Description of image Objects and their Shapes) can be used to perform a Morphological Spatial Pattern Analysis (MSPA) on raster image data.  MSPA conducts a segmentation of the image foreground data into mutual exclusive feature classes.

MicroCity

A spatial modeling framework for scientific analyses. Additional to fundamental GIS functions, many unique libraries such as Network, Fractal, 3D, Simulatoin and LP Solver have also been supported as built-in functions to facilitate scientific modeling.

PAST: PAleontological STatistics

PAST is a free, easy-to-use data analysis package originally aimed at paleontology but now also popular in many other fields. It includes common statistical, plotting and modelling functions.

Pattern Analysis, Spatial Statistics, and Geographic Exegesis (PASSAGE)

PASSaGE is a free, integrated, easy-to-use software package for performing spatial analysis and statistics on biological and other data.




The Big List Of Geostatistical / Geospatial Analysis Software I – A to F

Now, a series of posts listing a large number of free programs / services for doing geostatistical / geospatial analysis. Programs included will be those that specialize in this area; other general purpose GIS apps with statistical functionality (e.g. SAGA, MicroDEM, gvSIG) won’t be included.  Descriptions come from the software’s website or documentation; this has the advantage of concealing my vast ignorance in this subject area. I’ll probably put biologically-oriented software in a separate series. Click on the program title to go to its website.

BayesX

BayesX is a software tool for estimating structured additive regression models…BayesX is able to manipulate and draw geographical maps. The regions of the map may be colored according to some numerical characteristics.

CrimeStat III

CrimeStat III is a spatial statistics program for the analysis of crime incident locations.

CSPro: Census And Survey Processing System

CSPro (Census and Survey Processing System) is a public-domain software package for entering, editing, tabulating and mapping census and survey data.

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Cyze And Associates Software

GeoSpatial Explorer

Geospatial Explorer has been written to enable geologists, environmental scientists, and engineers to apply innovative science and technology to enhance and expedite the reduction of risk to human health and the environment. Geospatial Explorer permits the user to identify, understand, and solve complex environmental problems better, faster, and cheaper.

GeoStatistics Package

As part of Cyze & Associates’ support for Geostatistical Analysis, Cyze & Associates provides a free Geostatistics package that compliments Geospatial Explorer by providing an interface to the SAGE 2005 variogram reports and GSLIB 2.0 kriging and simulation executables.

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Distance Mapping and Analysis Program (DMAP)

DMAP is a Windows compatible program that produces disease rates using variable spatial filters and tests for their statistical significance using Monte Carlo simulations. The program computes values that are inputs to GIS software that will produce disease rate maps and maps of statistical significance. Input data are either individual disease records and individual at risk records or are aggregates of the above.

EpiGrass

Epigrass is a software for visualizing, analyzing and simulating of epidemic processes on geo-referenced networks.

EpiInfo – Closed Edition

With Epi Info™ and a personal computer, epidemiologists and other public health and medical professionals can rapidly develop a questionnaire or form, customize the data entry process, and enter and analyze data. Epidemiologic statistics, tables, graphs, and maps are produced with simple commands such as READ, FREQ, LIST, TABLES, GRAPH, and MAP. Epi Map displays geographic maps with data from Epi Info™.

EpiInfo – Community Edition

Epi Info™ is a public domain suite of software tools designed for the global community of public health practitioners and researchers. It provides for easy data entry form and database construction, a customized data entry experience, and data analyses with epidemiologic statistics, maps, and graphs for public health professionals who may lack an information technology background…. Epi Info™ Community Edition is the open source project to reproduce the popular Epi Info™ suite of tools in C#, with the goal of developing a data collection and analytics system for public health that is highly scalable, platform independent, and database agnostic.

ESTAT – The Exploratory Spatio-Temporal Analysis Toolkit

Developed by the GeoVISTA Center in close cooperation with users at the National Cancer Institute, the ESTAT toolkit provides user-friendly, open-source software designed to support exploratory geographic visualization. While developed initially to support cancer research, ESTAT is designed to handle any kind of spatial data with attributes. If you have an ESRI ArcGIS shapefile, you can … quickly convert your data into something ESTAT can use.

Flowmap

Flowmap is a software package dedicated to analyzing and displaying interaction or flow data. This type of data is special in the sense that there are two different geographic locations connected to each data item: An origin location where the flow starts and an destination location where the flow ends. The flow data itself can be people (e.g. commuters, shoppers, hospital visitors), goods, usage of agricultural services or telecommunication and so on.




Free Tools For ArcGIS

Several free tools for ArcGIS from Jenness Enterprises, including ESRI International User Conference prize winners. Don’t currently work on ArcGIS 10, but that may change.

Repeating Shapes Tool – “This tool generates an array of repeating shapes over a user-specified area. These shapes can be hexagons, squares, triangles, circles or points, and they can be generated with any directional orientation.”

Tools For Graphics and Shapes – “This extension includes a large suite of tools for calculating geometric attributes of vector features and for selecting and naming graphics. All tools are available at the ArcView license level. Among many other functions, this extension offers tools for calculating the true area and centroid of polygons as they lay on the sphere, thereby avoiding errors caused by projection distortions. This extension also offers tools to calculate true lengths of polylines as they lie on the spheroid, using Vincenty’s equations. This manual thoroughly explains all algorithms used to calculate geometric attributes on the sphere and spheroid.”

DEM Surface Tools – “This extension provides you with tools to generate a variety of surface characteristics of a landscape, using both projected and unprojected (i.e. latitude / longitude) digital elevation model (DEM) rasters. These tools include:

  1. Surface Area and Ratio of a landscape
  2. Slope, with 3 slope algorithm options
  3. Aspect, with 3 aspect algorithm options
  4. Hillshade, with optional hypsometric tinting
  5. Multi-directional Oblique-Weighted Hillshade, with optional hypsometric tinting
  6. Six types of Landscape Curvature”

Raster Extractor – “The Raster Extractor tool allows you to extract any number of rasters from an existing raster catalog and load them as individual rasters in your map, thereby allowing you to analyze them in ways that the Raster Catalog does not allow. The tool also gives you the option to mosaic all the rasters into a single raster dataset, modify the cell size and trim the final raster to the visible extent.”

Corridor Designer Toolbox – For designing corridors for the free flow of wildlife through urban landscapes. Includes a general designer, corridor evaluation tool, and land facet corridor design tool. Notes on website suggest that this is unlikely to be upgraded to ArcGIS 10 compatibility.




Daylight Hours Explorer

Daylight Hours Explorer is a simple online tool to visualize how many hours of sunlight a particular latitude gets during the course of a year. Move the upper-right slider to change the latitude; move the lower-right slider to change the date, with hours of daylight below the globe. With “show draggable point …” checked, you’ll see the dotted lines on the graph, and also be able to change the date by clicking and dragging on the point on the curve:

daylight

Option to show yearly average (as above). You can also click and drag the globe to spin it around, useful for seeing how the day/night terminator orientation changes with time. Links to download the Flash animation to your desktop for offline use. From the University of Nebraska-Lincoln Astronomy Department; site has lots of additional animations, most astronomy-oriented (but a few with geographic connections).