Guided Tour: 'Atlas' Charts
Easy to create "Road Atlas" style tables.
'Road atlas' tables use a list of places (locations) for the start and end points. The result is a table that is very similar to the driving tables seen in road atlases.
MileCharter created the above table of distances between a point data layer of major Texas cities. The following screenshots show the process.
A layer of data points (red stars) indicating the required cities was created in Caliper® Maptitude®. This data could be imported Excel® spreadsheet, Access® database, or geospatial (GIS) data file.
MileCharter is started. The same data view (layer) was selected for both the start and finish locations to produce the 'atlas' table. Options for a lower-right table are selected. Distance units are the current Maptitude units — miles in this case. Distances and travel times are requested, and these will be written to different worksheets. Compute is pressed and the table is created in a few minutes.
The above example produces a 'lower triangle' mileage chart, where each city pair is only represented with one calculated distance. Usually this is sufficient, but MileCharter can also produce a full rectangular mileage chart (see right) which records distances for every city pair in both directions. One-way streets and frontage roads are the usual causes for route distances that vary according to direction.
These examples use Microsoft Excel for the output. MileCharter can also write to a series of text files, one for each attribute (distance, travel time, route cost). Text file separator characters can be commas (ie. CSV), semi-colons, or tab characters.
Similar "road atlas" style charts can be created for any locations in North America or Europe. As well as cities, you could find distances between towns, offices, depots, or customers.
Next, we look at selection sets and other locations.