Download MPUSEP used PPT for GIS Introduction and Software Training in English

A system for capturing, storing, editing, integrating,
managing, displaying, querying, analyzing & distributing
geographic data which reference to The Earth.
Answered
Data Layer
linked by
geography
Planning data
Road Network
Utility data
Map
Chart
Reports
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Software
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Hardware
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People
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Method &
Procedures
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Data
• Raster
•Vector
•Real World
Raster data is stored as a uniform grid of rows and columns with a Digital
Value (DV) / Digital Number (DN) for each cell.
Each unit (pixel or cell) within the grid is assigned an identifying value
based on its characteristics. Groups of cells represent geographical
features; the value in the cell represents the attribute of the feature.
Numerous raster data
formats are GIF, JPEG, TIFF,
GeoTIFF, MrSID, IMG etc.
Vectors store, represent and display spatial data as sets of X,Y coordinate
pairs, to represent features and locations on the surface of the earth.
Each feature is represented by a series of co- ordinates which define its
shape, and which can have linked information. Features can take the form
of single points, lines, arcs or closed lines (polygons).
Numerous vector data formats
are DWG, DXF, SHP, SHX, DBF,
TAB etc.
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Shapefiles- A shapefile is an Esri vector
data storage format for storing the
location, shape, and attributes of
geographic features. It is stored as a set of
related files and contains one feature
class.
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Layers- Layers are the mechanism used to
display geographic datasets in Arc Map.
Each layer references a dataset and
specifies how that dataset is portrayed
using symbols and text labels.
We typically represent objects in space as three distinct spatial
elements:
Points - simplest element
Lines (arcs) - set of connected
points
Polygons - set of connected
lines
We use these three spatial elements to represent real world features and
attach locational information to them.
Data Assembly
Remote
Sensing
Maps
Database
Direct Entry
GPS
Keyboard
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GIS based solutions for property tax management including spatial
content generation, assessment data preparation, desktop application
and web interface
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Creation of a GIS-based spatial property database using high
resolution satellite imagery geo-referenced control points taken
by dual-band GPS (DGPS) survey, and updated by ground truthing
(validation). The property boundary layer is then migrated on top
of this GIS base map to create homogenous GIS data layers.
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Assessment data preparation using existing property details and
door-to-door contact surveys.
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Re-number of properties in the ULB jurisdiction to assign a unique
identifier to each property and fixing of house numbers
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In GIS based property tax assessment each house is identified
with the House number, owner name, contact no etc. The
accurate area of the plot is calculated with the help of the GIS.
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Mapping the cleaning of streets, drains, removal of rubbish, scavenging
and solid waste management
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Mapping the city into various illumination zones of public street lighting.
 Electric poles & Street Lights View
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Mapping the areas supplied with protected water.
Identification of new roads, bridges, cause ways and culverts.
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Mapping the road width and major road junctions.
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Mapping the city into various illumination zones of public street lighting.
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Manage the construction and maintenance of buildings, Property tax
assessment etc.
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Health mapping the city like hospitals, maternity and child welfare
centers, dispensaries.
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Mapping the slaughter houses, markets parks, play grounds, burial
grounds and urban forestry.
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Utility mapping includes Roads, water pipelines, sewerage, storm water
electric lines, traffic management, health center, fire stations
telecommunications Miscellaneous services etc.
Define
Problem
Take
Decision
Create
Create
Output
Output
Perform
Analysis
GIS
Process
Evaluate
Criteria
Build
Dataset
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ILWIS
ERDAS Imagine
ER Mapper
Map Info
Auto CAD Map
Arc View
Arc Info
Arc GIS
Quantum GIS (QGIS)- Open source software
Many other open source software like Global Mapper,
Sky map etc.
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Right click on a gray area at
the top of the screen. For
example, under the toolbars
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Then choose Georeferencing
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This will activate the
Georeferencing toolbar
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Define Projection System
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Now start adding GCP- Ground
control point on map and
assign coordinates
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Add GCP- Minimum 4 GCP required for geroreference the images
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By using Transformation you can manage the Georeferencing
transformation order.
Then click Rectify and save in desired format and location
Done Georeferencing
1. Add the data you want to edit to your map
* Add other layers for orientation and reference
(e.g., aerial photography)
2. Display the Editor toolbar and start an edit session
3. Set the editing environment
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* Specify your editing target – the layer you
want to edit
•
* Specify the editing task (e.g., modify)
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* Enable additional settings (e.g., snapping)
4. Select the feature and display its sketch
•
Double-click a feature to show vertices and
segments
5. Make your edits Move, insert or delete vertices
6. Save your edits
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Heads-up digitizing – tracing shapes on screen using another layer for
reference (aerial photos)
Each time you click on screen, an x,y coordinate is recorded
To digitize, follow these steps:
i. Start an edit session and set editing env. (target layer, editing task
and snapping environment)
ii. Zoom to the feature you want to digitize on your base layer
iii. Trace the outline of the feature, clicking to create each vertex
iv. Save your edits
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Install Arc GIS Software
To be Continue………………………..