7/30/2019 Memo's ESL Project
1/18
Rowland Adult and Community
Education
ROWLAND HEIGHTS CA.
PROJECT
7/30/2019 Memo's ESL Project
2/18
8:47 ESL Intermedio avance 2
Table of contents
1 What is GIS.
2 Layers.
3 Scales in GIS.
4 Spatial Representation.
5 Set of attribute.
6 File formats.
7/30/2019 Memo's ESL Project
3/18
8:47 ESL Intermedio avance 3
What is GIS?A geographic information system
(GIS)
1
7/30/2019 Memo's ESL Project
4/18
8:47 ESL Intermedio avance 4
What is GIS? GIS allows us to view, understand, question, interpret,
and visualize data in many ways that reveal
relationships, patterns, and trends in the form of maps,
globes, reports, and charts.
A GIS helps you answer questions and solve problems
by looking at your data in a way that is quickly
understood and easily shared.
7/30/2019 Memo's ESL Project
5/18
8:47 ESL Intermedio avance 5
Funciones SIG
Layers
2
7/30/2019 Memo's ESL Project
6/18
8:47 ESL Intermedio avance 6
city
1:500 1:20,000
Big Scale
1:200,0001:20,000
Small
Scale
city
Scale in GIS:
The scale represents the relationship of the
distance on the map to the actual distanceon the ground.
3
7/30/2019 Memo's ESL Project
7/18
8:47 ESL Intermedio avance 7
SpatialRepresentation Such as points, lines, or polygons, and a common
set of attribute columns.
4
7/30/2019 Memo's ESL Project
8/18
8:47 ESL Intermedio avance 8
SET OF ATTRIBUTE.
Every layer is associated with a set of attribute.
5
7/30/2019 Memo's ESL Project
9/18
8:47 ESL Intermedio avance 9
Cadastral Data SetMain cartography
RESTITUTION
The Public LandSurvey System
7/30/2019 Memo's ESL Project
10/18
8:47 ESL Intermedio avance 10
7/30/2019 Memo's ESL Project
11/18
8:47 ESL Intermedio avance 11
File Formats
shapefiles, dBASE tables, and filetypes.
CAD
COVEREGE
Geodatabase
Shapefile
Raster
Tables
GIS6
7/30/2019 Memo's ESL Project
12/18
8:47 ESL Intermedio avance 12
Shapefiles
The attributes are stored in a table database.
7/30/2019 Memo's ESL Project
13/18
8:47 ESL Intermedio avance 13
Types of files CAD with extentions DXF, DWG y DitGN
Files ASCII (.txt)
7/30/2019 Memo's ESL Project
14/18
8:47 ESL Intermedio avance 14
ArcView
Table ofContent
View window
Tools bar
Menu
table
Bar
Title Bar
7/30/2019 Memo's ESL Project
15/18
8:47 ESL Intermedio avance 15
View of
data
layers
Map:
Cover view of data,
layers and
elements of the
map.
7/30/2019 Memo's ESL Project
16/18
8:47 ESL Intermedio avance 16
Glossory
Restitution
The determination of the true (map) position of objectsor points; the image of which appears distorted ordisplaced on unprocessed aerial photographs. Restitutioncorrects for displacement resulting from both tilt andrelief displacement. Restitution in classic
photogrammetry is commonly achieved by analyticalmethods or through the use of stereoscopic plottinginstruments.
Trends. To take a particular direction.
Data Individual facts,statistics, or items or information.
7/30/2019 Memo's ESL Project
17/18
8:47 ESL Intermedio avance 17
Layer .A display entity comprised of one or more components that can
be manipulated separately from other layers. There is often a
one-to-one correspondence between layers and objects, but anindividual layer may be comprised of multiple objects, such asthe red, green, and blue components used to create a singlelayer in multiple raster display.
SpatialAn adjective applied to objects that vary in space in twoor threedimensions.
Polygons Figure having three or more,usually straight,sides. Attribute.
1.-A characteristic of a geographic feature described bynumbers, characters, images and CAD drawings typically storedin tabular format and linked to the feature by a user asignedidentifier (eg. attributes of a well might include depth and gallonsper minute).2.- A column in a database table.
7/30/2019 Memo's ESL Project
18/18
8:47 ESL Intermedio avance 18
CadastreA public record, survey, or map of thevalue, extent, and ownership of land as a basis of
taxation.
file formatA particular, pre-described layout pattern for data in a
computer file so it may becused or acted upon by a
program.
ShapefileIts a file name.