This document discusses the steps to digitize a map of IIT Roorkee. It begins by defining digitization as converting analog data to digital format versus digitalization which utilizes technology to enhance processes. The steps include georeferencing an image, creating vector layers, defining feature attributes, using digitization tools to add polygons for buildings and open areas, and lines for roads. Attributes are added and the output is shown with buildings, roads, and open spaces digitized on the IIT Roorkee map.

1. INDIAN INSTITUTE OF TECHNOLOGY ROORKEE
DIGITIZATION OF IITR MAP
CEN-614 THEORY AND APPLICATIONS OF GIS
CENTRE FOR TRANSPORTATION SYSTEMS
SUBMIT BY : HARSH BAMNIYA (22554003)
GUIDE : PROF. S.K. GHOSH
ASSIGNMENT 7

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DIFFERENCE BETWEEN DIGITIZATION AND DIGITALIZATION
• Digitization is the process of transforming information from a
physical format to a digital version. While digitalization is the
practice of utilizing technology to enhance corporate
processes. In a nutshell, digitization relates to information,
whereas digitalization relates to processes.

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DIFFERENCE BETWEEN DIGITIZATION AND DIGITALIZATION
Digitization Digitalization
Definition Transforming analog data to
digital
Utilizing technology to
enhance corporate processes
is known as digitalization
Related to Information Business Processes
Examples 1- Scanning a paper document
2- Convert music to mp3
3- Convert wet signature to
electronic
4- Converting a paper map
into digital
1- Video conference call
instead of physical meet up
2- Automating work certificate
processes in businesses
3- Ability to use ATM to
deposit cheques
4- Audio conferencing, chat,
messaging
Benefits 1- Faster access to information
2- Reduced storage cost
3- Improved digital
preservation & archiving
4- Ability for integration
1- Efficiency & productivity
improvements
2- Improved transparency
3- Faster & better decision
making
4- Improved customer
satisfaction

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STEPS FOR DIGITIZATION OF BUILDING
• 1.The georeferenced image from the last practical is use for digitization. Use both IITR
map and Google earth map.
• 2.Before starting the digitization process is to ensure that all the raster and vector layers
are in correct CRS which shows the geometrical measurements in meters.
• 3.The next step is to create a new vector layer, which can be done using the ‘new shape
file layer’ option from the ‘Create Layer’ sub-menu in the ‘Layer’ menu of the QGIS
toolbar.

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• 4.The next step is to define the features and attributes of the shape file. Initially we have
to type the name and then the features can be chosen from the list in ‘Geometry type’.
The attributes of the objects can be set by adding various fields.
• 5.This can be done using the ‘New Field’ menu. The name, type (string, decimal number,
whole number or date), length and precision of the field can be set.

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6. Now your shape file is ready so add the needed attribute and feature class so we can start
the digitization.

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7.This will be done using the ‘Digitization toolbar’. The ‘Toggle Editing’ option can be turned
on to start editing. This will activate the toolbar which contains several tools for digitization.
8.. The features can also be edited using options from the ‘Edit’ menu of the QGIS toolbar.
Rings within the feature can be added/ deleted using ‘Ring’ options. Features can also be
deleted using this option. ‘Offset curve’ can be used to create offset polygons.

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9.Polygons were used to digitize the buildings as well as open areas in
the IITR campus and Google map.
10. While digitizing, the attributes of each polygon can be added
simultaneously. The output of the buildings can be seen like this

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11.After all the features are added, the attribute table can be opened
and the attributes can be edited or added. And by using the field
calculator we can add different calculations.
12.Using the ‘Field Calculator’. The different function such as area
perimeter lengths can be used to calculate the area of any building or
other features.

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13.Now do the same process for digitizing roads(line feature) open
spaces such as gardens(polygon), boundary(line feature) and
ATM/bank (point feature). Firstly create the shape file and then select
the feature and edit the attribute of each feature.

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14.line feature showing roads in
IITR map.

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15.Polygon feature showing open spaces in IITR map.

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16. Full digitization of IIT Roorkee MAP

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16. Full digitization of IIT Roorkee MAP with image of IITR MAP

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