|  |  Sources and data for SIPIS | |

• Census data:

Raw statistical data from the 1991 Census are copyrighted  from the Census of India. Other variables (ratios, percentages, etc.) have been computed by the SIFP. The full description of the data is accessible from the CD.
Some village data have been already published in the corresponding District Census Handbook volumes. They can also be purchased on floppy disks.
More data than used here are also available from the Census of India publications. We suggest interested users to consult the state-wise District Profile 1991 volumes for more data (nuptiality, child mortality, education, work participation, migration, religion, language, housing and population trends), as well as other census volumes. These data are, however, available only at the district and town level.
For details , see the web site of the Census of India:  http://www.censusofindia.net
 

• Locations:

We have used a variety of published maps to locate villages and other geographical features.
Data are not georeferenced, but distances are respected.

• Village data:

Census villages are usually revenue villages. These villages may comprise several hamlets, but are treated as a single statistical unit. The village database also includes a large number of uninhabited areas (such as Reserve Forest or Protected Forests).
We have detected many inaccuracies or discrepancies in the original data, which have been corrected whenever possible. Village areas have not been reproduced.
Sources: 1991 Census data corrected by SIFP

• Urban Area data:

Definition of the urban areas as per the 1991 Census: statutory towns (municipal corporations, notified area, etc.) as well as additional census towns (minimum population of 5000, density of at least 400 per sq. km. and 75% of the workforce engaged in non-agricultural activity).
Sources: 1991 Census data corrected by SIFP

• Taluk data:

Taluk data refer only to rural areas.
Sources: SIFP (aggregation of village data)

• District data :

Data are available for the whole district or only for rural areas.
Sources: SIFP (1991 Census Data)

• Railway and  road map:

The road network includes National Highways, major roads and other roads.
We have used various sources, from census maps to other published maps.
Sources: SIFP.

• Water data:

This category combines river and water bodies.
Sources: SIFP creation from various sources (Digital Cover of the World, verified with 1991 Census)

• Images for the background:

All the image used for the background have been prepared by the SIFP. We have smoothed raw data using the kriging method (a standard geostatistical estimation technique). The size of each coloured cell (pixel) is approximately 500 m.
Fertility values refer to the child-woman ratio.
Sources: SIFP geostatistical estimates.

 

Warning: All data refer to the 1991 administrative boundaries. Raw data from the Census are copyrighted from the Census of India (copyright Government of India). Census data used in the SIPIS CD-ROM were corrected by the SIFP team. We performed cross-checking and logical tests to improve the database. However, statistical, orthographic or geographical inaccuracies are likely to remain in the database or in the maps. Maps are neither authentic nor correct. Correct maps are available from the Survey of India. The quality of our geographical information does not permit more detailed mapping than 1:500 000.

 
 

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