Tag Archives: data
Your own GIS is simply your view into the larger system. It’s a two-way street. You consume information that you need from others, and in turn, you feed your information back into the larger ecosystem.
Geography is key for integrating work across communities
Modern GIS is about participation, sharing, and collaboration. As a Web GIS user, you require helpful, ready-to-use information that can be put to work quickly and easily. The GIS user community fulfills that need—that’s the big idea. GIS was actually about open data long before the term gained fashion because the people who were doing it were always looking for ways to deepen and broaden their own GIS data holdings. No one agency, team, or individual user could possibly hope to compile all the themes and geographic extents of data required, so people networked about this to get what they needed.
To remain healthy, vibrant, safe, and resilient, America’s counties must anticipate and adapt to all types of challenges and changes. This is the canon of the National Association of Counties (NACo), an organization that unites more than 3,000 American county governments. Many of these counties are moving their IT out of an age of legacy stovepipe systems into the digital age of enterprise IT systems.
Jack Dangermond, whose company Esri leads the world in GIS technology, was a featured speaker at the NACo eighty-first annual conference and exposition in July 2016. He shared his vision about the future of smart communities in which government is more responsive, productive, efficient, transparent, and engaged with its citizens. The overarching theme of the Esri president’s presentation was that GIS enables a smarter world.
Among the company’s lofty goals is its initiative to create a greener infrastructure for America. Esri has created a planning and development solution for analyzing ways to accommodate community growth without adversely impacting the environment. Counties can see what’s at stake—inside and outside their borders—and take action to preserve valuable cultural, scenic, ecological, and agricultural landscapes.
There may be hundreds of thousands, if not millions, of undiscovered ancient sites across the globe, and Sarah Parcak wants to locate them. As a satellite archaeologist, she analyzes infrared imagery collected from far above the earth’s surface and identify subtle changes that signal a man-made presence hidden from view. Doing so, she and her colleagues aim to make invisible history visible once again—and to offer a new understanding of the past.
Pinellas County, Florida, has implemented a successful, innovative smart community governance model. Thanks to technological initiatives and innovations to deliver smart sustainable services, the county is better supporting its staff, municipalities, and the public. Because of its successful implementation, Esri nominated Pinellas County for the GCN dig IT 2016 Cloud and Infrastructure award.
GCN supports the public sector IT managers by providing technology assessments, recommendations, and case studies. For 28 years, the organization has showcased general excellence in government information technology by presenting the GCN dig IT (Discovery and Innovation in Government IT) awards. This year GCN is recognizing transformative technology that is truly reinventing government.
By: Charlie Magruder, Esri Agriculture Group
Advancements in agriculture technology will be a hot topic at InfoAg August 2–4, 2016, in St. Louis, Missouri. This year InfoAg sponsor Esri will showcase its AgTech Program, which offers the latest geospatial tools for agribusiness.
Stop by booths #79–82 and see many ways the Esri ArcGIS platform could help you map, visualize, and share data, such as monitoring crop health, managing farm and field, and tracking assets. People who build technology solutions are also welcome to come and explore Esri tools that can differentiate solutions and shorten development cycles. Esri’s open platform has powerful and flexible APIs, data, and ready-to-use templates that help you build intelligent apps quickly.
Throughout the conference, Esri partners will be at the booth to share important information such as drone data analysis, runoff management ideas, and real-time weather analytics.
Esri will host a HackerLab on Thursday, August 4, immediately following InfoAg, for developers looking to really dig in and get their hands on some code. This free interactive lab will walk participants step-by-step through exercises to create map apps. Any and all developers are welcome to register.
Learn more about Esri at InfoAg.
A Change in Perspective
3D is how we see the world. With 3D Web GIS, you bring an extra dimension into the picture. See your data in its true perspective in remarkable photorealistic detail, or use 3D symbols to communicate quantitative data in imaginative ways, creating better understanding and bringing visual insight to tricky problems.
The Evolution of 3D Mapping
Throughout history, geographic information has been authored and presented in the form of two-dimensional maps on the best available flat surface of the era—scrawled in the dirt, on animal skins and cave walls, hand-drawn on parchment, then onto mechanically printed paper, and finally onto computer screens in all their current shapes and sizes. Regardless of the delivery system, the result has been a consistently flat representation of the world. These 2D maps were (and still are) quite useful for many purposes, such as finding your way in an unfamiliar city or determining legal boundaries, but they’re restricted by their top-down view of the world.
Collections of images
The recommended data structure within ArcGIS to manage and process imagery is the mosaic dataset. A mosaic structure enables significant big data capabilities for large, even massive, image collections. Each mosaic is composed of a number of related raster datasets, enabling you to keep your original individual image files on disk and to access them as part of a larger, integrated single collection. Mosaics are used to create a continuous image surface across large areas. For example, among other scenarios, you can use mosaics to handle coverage of very high-resolution image files for an entire continent. Or you can manage an entire historical map series for a nation for every year and every map scale. You can even manage huge multidimensional collections of time series information for earth observations and climate forecast modeling (often referred to as 4D). Creating mosaics is straightforward. You can point to a series of source georeferenced image files and automatically assemble a mosaic in minutes where each image acts as a tile within the collection.
Managing extremely large collections
Some problems demand you go beyond exploring the data into quantifying relationships or formally testing hypotheses. This is where modeling comes in. Spatial modeling allows you to derive new data from values of existing data layers and to predict what might happen and where. Modeling often takes you into the realm of developing specialized workflows through programming. Creating scripts and automated workflows lets you efficiently query and process large amounts of data and implement more complex algorithms. Increasingly, the value of sharing methods and code through the web allows you to create complex workflows without the need to develop all the components. Knowledge is being shared by putting the real power of spatial analysis into the hands of more people.
With an understanding of the processes at work in the natural or human environment, additional features can be modelled from spatial data. Using an elevation surface, for example, you can derive information and identify features that were not readily apparent in the original surface, such as contours, angle of slope, steepest downslope direction (aspect), shaded relief (hillshade), and visible areas (viewsheds). You can model the flow of water across Earth’s surface, deriving runoff characteristics, understanding drainage systems, and creating watersheds.
The Arctic Ocean Basemap
Over the past few years, Esri’s Ocean Basemap team has noted the world’s scientific attention shifting north. The receding sea ice and increased vessel traffic within the Arctic Ocean is coming front and center in discussions within the marine and maritime communities. To support the communities, Esri’s Ocean Basemap team developed the Arctic Ocean Basemap.
By: Angela Lee
In Sweden, Kalmar County Museum archaeologists Nicholas Nilsson and Fredrik Gunnarsson used Esri technology to unearth a moment frozen in time. Using data captured by a drone, a web app, and a dog with a keen sense of smell, the archaeologists mapped a fort and its houses as well as the violent fate of the people who lived there.
In the 5th century AD during Europe’s turbulent Migration Period, on the island of Öland off the coast of Sweden many ring forts were constructed, mainly as a places of refuge during times of war. Many gold artifacts have been found on the island, including gold coins given to islanders for serving as mercenaries in the Roman army. The area surrounding the Sandby Borg ring fort had an unusually high concentration of these gold coins.