A Simple Use of Manifold in GIS
Manifold is really easy to use. You can do all sorts of intense, sophisticated visualization and analysis much easier than ever before. You can use Manifold in GIS analysis or computer networking, or in any situation that requires computational geometry, statistics, or networking analysis.
For a detailed review from a GIS perspective, check out the User Manual's GIS User's Introduction, a "white paper" style introduction to Manifold from a GIS perspective.Advanced Users might wish to check out the Case Studies page for very detailed, step-by-step examples of using Manifold in real-life business applications. This is oriented for people who aready have Manifold on their systems, but the examples provide many screen shots and a detailed sequence of "real life" use for everyone. See how to create a custom, local map from a complex TIGER/Line map, find out how Frank's Catering finds all Zip+4 codes within a mile of its locations and more. A favorite application that does not use analysis but simply creates pretty maps is the Creating a Map of US Regions case study example.
But first, Let's start with a really easy GIS example first, a simple example that's much harder to do in older, more expensive GIS systems. What follows is an example of using a Manifold solver, a very simple one, to find problems in a map of roads that is intended to be used as a network in transportation analysis.

Find any Unattached Nodes in a Network
It's often the case with GIS data that points which are supposed to be attached really aren't attached at high magnification levels. People import data from CAD drawings which look good when printed, but which are full of errors in key details. Maps used in GIS work often have this problem, but network drawings used in telecommunications or computer networking can have similar defects.
Let's check for attached points in the National Transportation Atlas
Database network of highways in central Mexico. The picture shows a section of
central Mexico with a Highways layer drawn over a layer showing the states of Mexico,
which provide a background map. The Highways layer shows roads in black and nodes as
yellow dots. Which of the nodes are not attached?
This is really easy. We click on the Solvers main menu, drill down to the Networks submenu and select the Unattached Nodes solver. There are many, many other Networks solvers in further submenus, but some of the more frequently used solvers appear in the main Networks menu. [Note: The illustration at right shows 3D View and Business solver headings. These headings are installed by the optional 3D View and Business Tools solver package products sold by manifold.net for $45 each.]

The solver pops up a dialog asking what we want to run it on, and we select Highways from a list box. The solver immediately selects all unattached nodes. We can animate them to make them flash in red so they're more visible.

Let's zoom in further in stages to see that the points picked out really are "unattached." Points selected by the solver are highlighted in red, the current selection color.
Keep your eye on the node pointed out with the yellow arrow. As we zoom to extreme magnification you can see the node does not actually lie at the intersection of the highway line segments. This would cause real trouble for many applications. Manifold also includes an Attach Nodes solver to fix problems like this automatically.
Discover and draw networks and maps with cool styles
Manifold System can automatically discover many different types of networks and draw
them as beautiful maps and diagrams. Hundreds of formatting capabilities allow you to
display networks using thousands of icon, line and area styles and millions of colors.
See the screen shots page
for examples.
The Manifold CD includes over 600 megabytes of geographic maps and other data sets which you can use to provide a "real world" context for your networks.
Once you've discovered and displayed
your network, you can apply Solvers to it just by pointing and clicking. Solvers
encapsulate a wide variety of networking mathematics to solve problems for you. If you can
diagram your system as a network, Manifold solvers will solve important tasks for you,
automatically. Solvers can do networking math, figure out geometric arrangements, apply
statistics, or use SQL to find information in the database behind your network.
Jump directly to the Explore Manifold page or the Release 4.50 Highlights page for much more. Visit the Products page as well, to get a summary of cool Manifold products for Access database, Manifold System, and data set products. The Products page also has links to lots of free items we provide, like GPS tools. Looking for total immersion in Manifold detail? Check out our Online User Manual, all 286 topics, 1066 illustrations and over 500 pages of detailed text covering all aspects of the system.
Ready to purchase? Visit the Manifold.net Online Store for a quick, easy, and secure purchase of Manifold products.
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