1 day ArcGIS training:-

sunfloweremryologistData Management

Oct 31, 2013 (3 years and 5 months ago)

60 views

1
st

day
ArcGIS

training:
-


Presenter:
Md

Abdul
Wadud

Laskar

Win
-
Win Infosys Ltd , Dhaka
-
1205 , Bangladesh




Training Overview

>Topics :
-


Georeference


Georeferencing

on scanned map


Universal Transverse Mercator coordinate system(UTM)


What is
Shapefile

?


Create
Shapefile


Topology


Geodatabase


About adding and deleting fields


Attribute data management


1.Spatial queries


2.Joins and Relates


About adding and deleting fields


Export Data


Any questions please


Georeference
:



To
georeference

something means to define its existence
in
physical space
. That is, establishing its
location

in
terms of
map projections

or
coordinate systems
.


The term is used both when establishing the relation between
raster

or
vector

images and coordinates, and when
determining the spatial location of other geographical features.

Georeferencing

on scanned map:


Universal Transverse Mercator
coordinate system(UTM):



The

Universal

Transverse

Mercator

(
UTM
)

geographic

coordinate

system

uses

a

2
-
dimensional

Cartesian

coordinate

system

to

give

locations

on

the

surface

of

the

Earth
.

It

is

a

horizontal

position

representation
,

i
.
e
.

it

is

used

to

identify

locations

on

the

earth

independently

of

vertical

position
,

but

differs

from

the

traditional

method

of

latitude

and

longitude

in

several

respects
.

The

UTM

system

divides

the

surface

of

Earth

between

80
°
S

and

84
°
N

latitude

into

60

zones,

each

6
°

of

longitude

in

width
.

Zone

1

covers

longitude

180
°

to

174
°

W
;

zone

numbering

increases

eastward

to

zone

60

that

covers

longitude

174

to

180

East
.

What is
Shapefile

?



The
Esri

shapefile

or simply a
shapefile

is a popular
geospatial

vector

data format for
geographic information
systems

software. It is developed and regulated by
Esri

as a
(mostly)
open specification

for data interoperability among
Esri

and other software products.
[


Shapefiles

spatially describe geometries:
points
,
polylines
, and
polygons
. These, for example, could represent
water wells
,
rivers
, and
lakes
, respectively. Each item may also have
attributes

that describe the items, such as the
name

or
temperature
.

Create
Shapefile
:


Topology:
-


A GIS topology is a set of rules and behaviors that model how
points, lines and polygons share geometry. For example,
adjacent features, such as two counties, will share a common
edge.


Topology has long been a key GIS requirement for data
management and integrity.

Geodatabase
:
-


The
geodatabase

is the common data storage and management
framework for
ArcGIS
. It combines "geo" (spatial data) with
"database" (data repository) to create a central data repository for
spatial data storage and management. It can be leveraged in
desktop
,
server
, or
mobile

environments and allows you to
store GIS
data

in a central location for easy access and management.


Geodatabase

are three types:


File
Geodatabases

Stored as folders in a file system. Each dataset
is held as a file that can scale up to 1 TB in size. This option is
recommended over personal
geodatabases
.


Personal
Geodatabases

All datasets are stored within a Microsoft
Access data file, which is limited in size to 2 GB.


ArcSDE

Geodatabases

Stored in a relational database using
Oracle, Microsoft SQL Server, IBM DB2, or IBM Informix. These
multiuser
geodatabases

require the use of
ArcSDE

and can be
unlimited in size and numbers of users.


Geodatabase
:
-


Geodatabase

on
ArcInfo
:
-


Attribute data management:
-


1.Spatial queries:
A spatial query is a query that returns
features based on their spatial relationship with a query
geometry. This includes searching for features given an extent
(finding all streets within an envelope) or searching for features
based on their relation to other features.


Attribute data management:
-


2.Joins and Relates:
ArcMap

provides two methods to
associate data stored in tables with geographic features: joins
and relates.


Joins Data:
-

About adding and deleting fields:
-


You can add or remove fields from a table or feature class.
Most likely, you'll add or remove fields from data that you
personally manage.


Export Data:
-



Thank you all of My friend's


Any questions
please