Introduction_to_ILWIS.pdf

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Microsoft PowerPoint - Intro ILWIS.ppt

Introduction to ILWIS 3.11

Cees van Westen

Dinand Alkema

Inte rnationa l Institute

fo r Ge o-I nfo rmatio n Sc ie nce and Ea rt h

Obse rvatio n

(ITC), Enschede, The Netherlands.

E- ma il: we s te n@ itc . nl

Alke ma@ itc. nl

1

Contents of the lecture

z What is ILWIS?

z ILWIS Data types

z Spatial entities and data models

z How the spatial data types are represented in

ILWIS

z Basic User-interface of ILWIS

z How to install ILWIS

ILWIS 2.1 concepts

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What is ILWIS?

ILWIS: the I ntegrated L and and W ater I nformation S yste m

z PC-based integrated Geographical Information System (GIS)

& Re mote Se nsing software

z Developed by ITC

z Originally designed in 1985 for a land use zoning and

watershed management project in Sumatra

z Since 1989 ± 5000 systems installed in > 100 countries

z Used extensively in courses in and outside ITC, in research

and projects

z Non-commercial

z Intended for training, research and small projects

z Complete package (GIS & Image processing)

z Easy to learn

z Many training materials available

ILWIS 2.1 concepts

What is ILWIS?

z PC-based GIS & Remote Sensing

package

z Developed by ITC

z A complete package:

z image processing

z spatial analysis

z digital mapping

z Easy to learn and use:

z full on-line help

z extensive tutorials for direct use in

courses

z 25 case studies of various diciplines

ILWIS 2.1 concepts

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What can you do with ILWIS?

z Data input

z Data management

z Digital Image Processing

z Three dimensional ima ge interpretation

z Attribute data analysis

z Data analyses (mostly raster)

z Data output

ILWIS 2.1 concepts

Hardware

Digitizer

Scanner

PC running

Window 3.1, 95, NT

Printer

Plotter

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ILWIS data types: GIS

ILWIS 2.1 concepts

ILWIS data types: Remote Sensing

z Remote Sensing is the science of acquiring

information about the earth without actually being in

contact with it.

ILWIS 2.1 concepts

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Spatial entities

z Points:

single X and Y coordinate

- ra i nfal l s tatio ns , s ampli ng poi nts

z Lines:

linear features; series of X and Y

coordinates

- dra inage l ine s , conto ur li ne s

z Area:

features occupy a certain area

- landuse units, geological units

ILWIS 2.1 concepts

Data models - vector and raster

y

y

y

code

code

code

x

x

x

Point

Line

Area

Column

Column

Column

Key for the vector models:

intemediate point

node

ILWIS 2.1 concepts

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Plik z chomika:

Inne pliki z tego folderu:

MapBasic User Guide.pdf (2907 KB)
MapBasic Reference Guide.pdf (6628 KB)
MapBasic Tutorial.pdf (40 KB)
Introduction_to_ILWIS.pdf (997 KB)
Quick introduction to ILWIS 3.1.pdf (801 KB)

Inne foldery tego chomika:

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