7/26/2019 TransCAD_4_LayeringFeaturesOnAMap

1/4

06/11/16 1

TransCAD

Layering Features on a Map

7/26/2019 TransCAD_4_LayeringFeaturesOnAMap

2/4

06/11/16 2

Layers and Some

ExamplesA layer is a group of features of tesame type! E"ery geograpi# $le

#ontains at least one layer ofinformation% and e"ery layer as aname tat des#ri&es te features

'itin it!Layers #an &e "e#tor or raster!

7/26/2019 TransCAD_4_LayeringFeaturesOnAMap

3/4

06/11/16 3

(e#tor ) *aster

(e#tor layers #ontainmap features tatare points% lines% or

areas 'i# arestored in ageograpi# $le! *etail Stores

Cities and To'ns +ig'ays

City Streets

Countries

,-. or .ostal Codes

*aster layers store"alues in ro's and#olumns! -n an imagelayer te "alues

represent #olors% and teset of #olor "alues is"ie'ed as anortopoto% a pi#ture ofa map% or anoter type

of image!Te images are stored in$les 'it formats su#as eoT-FF or D!

.oints

Lines

Areas

7/26/2019 TransCAD_4_LayeringFeaturesOnAMap

4/4

06/11/16 4

Canging a Map2s Layers