trans cad creating maps

7/27/2019 Trans Cad Creating Maps

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TransCAD

Creating Maps


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Creating Maps

TransCAD draws maps using data from

geographic files stored on your computer, CD

-

ROM, or file server. When you open one or more

geographic files, TransCAD creates a new map

window in which to display the layers.

You can then use commands and tools to change

the geographic area that is shown on the map. You

can also use Create

-

a

-

Map Wizard

TM

to

automatically select the appropriate geographic

files to display an area of your choosing.


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Creating a Map

TransCAD comes with

dozens of different

geographic files, and

lets you create and use

your own files too.

Each geographic file

contains a number of

map features, or

simply features.

There are three ways that you create a

new map with TransCAD:

Use Create

-

a

-

Map Wizard

TM

.

TransCAD automatically chooses

the appropriate geographic data

files to display any location of your

choice.

Open an existing map in the Map

Librarian. TransCAD automatically

opens the map for a location of

your choice.

Manually choose one or more

geographic files. TransCAD opens

a new map that displays only the

files that you have chosen.


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Using Create-a-Map WizardTM

Create

-

a

-

Map Wizard lets you create maps in four

different ways:

General Purpose Map

TransCAD chooses one or more

geographic files based on the area you want to see, and makes a

general purpose map like the ones you might find in a street map,

road atlas, map book, or telephone book.

Open a Geographic File

You choose a geographic file and the

area you want to see, and TransCAD opens the file and zooms to

the desired location.

Map of My Own Data

You choose a dBASE file or other

tabular data file that contains your own data, and TransCAD

looks through the file and figures out how to use the data to

make a map.

Combine Existing Maps

You create a new map by mixing and

matching the layers that appear in your other maps.


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Start Create-a-Map

Wizard


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Using the Map Librarian

When you use the Map Librarian, you

choose:

The map library

A category of maps within the map

library

One or more maps from that category

The marker that sets the map location


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Open Maps with the Map Librarian


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Creating a Map by Opening

Geographic Files

When you open one or more geographic

files, TransCAD creates a new map and

displays features from the files as layers inthe map.

You can open geographic files directly from

one of the TransCAD CDs, from a hard diskor file server, or any combination of these.


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Create a Map by Opening

Geographic Files


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Moving Around a Map

A paper map shows a limited geographicarea. You cannot change the area that is

shown or the size of individual features onthe map.

A TransCAD map, however, is dynamic.You can focus in on any specific area you

want, and change the map so that thefeatures you want to see are shown at thesize you want to see them. You do this by

changing the maps scale and center.


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Scale and Center

Large scale maps make eachfeature look larger, and show asmaller geographic area.

Small scale maps make eachfeature look smaller, and showa larger geographic area.

The center of a map is the

location of the middle point ofthe map.


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Using the Map Locator


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Setting the Scale to a Value

RatioA scale of 1:1,000 means that every feature on the

map is shown at one thousandth of its actual size.

Miles per InchA scale of one inch = 100 miles means that

every inch on the map corresponds to 100 miles on the earth


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Saving, Closing,

and Retrieving

Maps

i d


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Saving and

Retrieving

Workspaces


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Organizing Maps in a Map Library

Libraries is for creating, adding, or

removing map libraries

Contents is for adding, changing, orremoving categories and maps within the

current map library


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Configure Map Libraries


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Change the Contents of a Map Library


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Using other Geographic File Formats

TransCAD provides direct support for these

geographic file formats:

Records with a coordinate for a point, in any

ODBC database

Points, lines, and areas stored in an Oracle

Version 7 (Spatial Data Option) or Version 8i

( Oracle Spatial) database.

ESRI Shapefiles

MapInfo TAB files


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Using ESRI Shapefiles as Map Layers


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