Table 2 - Department of Land Resources

Creation of symbols
A symbol library(Alamats) is made which contains the various symbols, and is shown in
a village map. The main intention behind this is to keep its uniformity in all over the
villages that has to be digitized.
Polygons, points, and lines shall be captured in different layers.
The coincident lines should be digitized only once and used for both the polygons.
The data should be topologically correct for each of the layers.
The features such as wells, temples, trees, village tri-junctions etc. should be
digitized as point features.
The features such as rivers and roads should be digitized as linear features
Logical connectivity of the features should be followed i.e. a river would not join
a road.
Visual checks include verifying each tile of digital data with reference to the source data
by one-to-one comparison. Missing / extraneous features should be identified and
corrected with reference to the source data.
Quality control checks shall include edge matching, topology checks, outside neat line
check, incorrect extent check, double point check, pseudo/dangle node check etc. The
errors identified in the data should be corrected accordingly. The output will be validated
completely for physical dimensions, parcel size, vector, numbering, feature coding, etc.
The corrections are marked on the output and incorporated in the digital data.
Porting of the .shp file into spatial database
The postgis extension of postgress database have been used to store the .shp files of the
each village into the database.The point, line, polygon, multipoint, multiline,
multipolygon, and geometrycollections can be stored in a table. There are two data types
currently supported.The standard OGC geometry data type which uses a planar
coordinate system for measurement and the geography data type which uses a geodetic
coordinate system. Only WGS 84 long lat (SRID:4326) is supported by the geography
datatype.
By selecting ‘Import Shape file’ option in File menu one can import desired Shape file
into PostGIS format. The village code as slecetd in also stored in the database.
Salient features of Bhu-naksha are
1. Developed using Open source software.
2. Works in Windows and Linux
3. Plugin architecture to facilitate integration with any state ROR database.
4. A plot can be divided into multiple subdivisions in a single mutation
NIC,Deity,MCIT,GOI DOLR,MORD,GOI 122