Tag Archives: data
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.
Your world is full of data, and maps help you to make sense of it. There is a growing need to turn geographic data into compelling maps. All users want to create beautiful, interactive maps and infographics with live data, easily and with confidence. The smart mapping mission is to provide a new kind of strong “cartographic artificial intelligence” that enables virtually anyone to visually analyze, create, and share professional quality maps in just a few minutes, with minimal mapping knowledge or software skills.
Smart mapping is designed to give ArcGIS users the confidence and ability to quickly make maps that are visually pleasing and effective. Cartographic expertise is “baked” into ArcGIS, meaning it is part of the fundamental user experience of using ArcGIS. The map results that you see in front of you are driven by the nature of the data itself, the kind of map you want to create, and the kind of story you want to tell.
Join Esri at the American Water Resources Association (AWRA) 2016 Summer Specialty Conference: GIS and Water Resources IX
The Esri water team will be on site at the AWRA Summer Specialty Conference, July 11-13 at the Hilton Sacramento Arden West. The focus of this year’s event is the role of GIS to support better decisions across water, land, and ecological resources.
Esri is a bronze-level sponsor and exhibitor at the conference, where a spectrum of topics will be covered in 37 sessions over the course of three days, ranging from water resource data development techniques to complex computer modeling infrastructures.
ArcGIS for Cartographers
The ArcGIS platform provides capabilities that enable everyone to make truly excellent maps, including support for highly sophisticated mapping workflows employed by professional cartographers. Desktop includes tools for rich data compilation, for importing data from a multitude of publication formats, and for integrating this data with your own data to create consistent, accurate, and beautiful cartographic products for both printed maps and online maps.
ArcGIS Makes It Simple to Answer the Why
My wife’s Auntie Sadie was born old. I’ve seen pictures of her when she was in her late thirties and, even then, she looked old. One of her most endearing qualities was her wisdom. Maybe that’s why she looked old, because she was so wise. When our kids misbehaved, Sadie would be able to look at things from a number of different angles, take apparently unrelated information, and craft her wise analysis of the reasons for the misbehavior. Her special gift was analysis.
In my last two posts, I described three things that the ArcGIS platform does that can transform the way an electric company does its business. They each begin with the letter A. The first is access—the simple ability to give everyone in the company (as well as others such as customers, first responders, and the media) the ability to see its important information on a map, regardless of which device they use, where they are, or what time it is.