File Geninfo
This file contains general information such as banner name representing type of data (SOI DVD, NRIS layer, Satellite Image etc.), scale of source material, security classification, projection name and parameters, number and name of states and districts falling within the area, raster grid size, surveyed year/date of acquisition, data level code, spheroid, control (TIC) points information, name of Operating System, GIS package and DBMS name, orientation of raster data etc.

The detailed description and format of record number 3 onwards of this file is given in Table 3.

Table 3: General Information (Geninfo) Records

Rec No	Field	Contents	Type (Fortran)	Format	Starting Byte	End Byte	Remarks
3	1	Banner	CHARACTER	A60	1	60	Descriptive text explaining type of data. e.g. SOI Digital Topographic Data in Vector Format NRIS Digital Thematic Data in Vector Form IRS-ID-PAN Digital Raster Image IRS-ID-LISS Multiband Image (Band n) Digital Elevation data in raster format User Domain raster GIS data for Themes
		Filler	-	-	61	61	1 Space
	2	Number of States/ UT = (m)	INTEGER*2	I2	62	63	As per Central Heading. Mostly applicable for SOI topographic data or user domain thematic data in vector format ( if available)
	3	Scale of original source material	INTEGER*4	I9	64	72	Scale denomination of source material, if applicable
4 to 3+m	1	Name of State	CHARACTER	A68	1	68	One state per record in the same order as in central heading
	2	Number of Districts (n)	INTEGER*2	I4	69	72	No. of Districts in the State
4+m to 3+m+n	4	Name of District	CHARACTER	A72	1	72	Districts will be listed One District per record in the same order as in District Heading
4+m+n	1	Surveyed Year/ Date of acquisition	CHARACTER	A60	1	60	Year(s) of Survey of the source material e.g. 1968-69Date of Acquisition in case of Satellite raster image
		Filler	-	-	61	68	8 Spaces
	2	Security classification of dataset	INTEGER*2	I4	69	72	0 Not Classified 1 Restrictedib 2 Restricted and for Defence forces only 3 Secret 4 Top Secret
5+m+n	1	Data Level Code	INTEGER*2	I6	1	6	1 if data is base category wise (Topograpgic Vector). 2 if data is Theme Wise ( Vector Format) 3 if raster multiband image ( band wise) 4 if Single band raster image values 5 if Single band coded raster image
	-	Filler	-	-	7	8	2 Spaces
	2	Map Projection	CHARACTER	A4	9	12	POLY – Polyconic LAMB - Lambert conical orthomorphic SOM - Space Oblique Mercater Any Other
		Filler	-	-	13	14	2 Spaces
	3	Units	CHARACTER	A6	15	20	Units of measure for ground planimetric co-ordinates. Its Value is METERS
		Filler	-	-	21	22	2 Spaces
	4	Grid Size (Resolution)	REAL*4	F8.2	23	30	The true ground distance in meters.
	5	Accuracy Code	INTEGER*2	I6	31	36	Currently 0 for Topographic data. Could be as per User Devised Scheme for User Domain Data
	6	Number of Control (Tick) Points (q)	INTEGER*2	I6	37	42	Usually 4 corners of the sheet for Topographic data. Could be more for User Domain data.
		Filler	-	-	43	47	5 Spaces
	7	Place Name for Identification of the Sheet/ Data set	CHARACTER	A25	48	72	Any Place name associated with the sheet/ dataset
6+m+n to 8+m+n	1-9	Projection Parameters	REAL*8	3D24.15	1	72	Three parameters on each of three records. For polyconic projection the first two values are central latitude and central longitude in degrees, the remaining 7 values are not used.
9+m+n	1	Co-ordinates of origin	REAL*4	2F12.2	1	24	X,Y co-ordinates of the point of origin in ground meters
	2	Spheroid	CHARACTER	A8	25	32	EVEREST, WGS84, WGS72 etc.
		Filler	-	-	33	72	40 Spaces
10+m+n	1	Magnetic Variation from True North	REAL*4	F6.2	1	6	Value in Degrees
		Filler	-	-	7	7	1 Space
	2	Magnetic Variation E or W of True North	CHARACTER	A1	8	8	E = East of True North W = West of True North
	3	Annual Change in Magnetic Variation with sign	INTEGER*2	I4	9	12	+ for increasing, - for decreasing
		Filler	-	-	13	14	2 Spaces
	4	Year of Magnetic Variation	INTEGER*2	I6	15	20
	5	Copyright	CHARACTER	A24	21	44	Example : Govt of India Copyright
	6	Year of Copyright	INTEGER*2	I6	45	50	Example : 1975
	7	Contour Interval	INTEGER*2	I6	51	56	Contour interval in meters
	8	Mean Grid North Alignment	INTEGER*2	2(I3)	57	62	In degrees and minutes. For un-gridded sheets this field and the next are blank
		Filler	-	-	63	64	2 Spaces
	9	East and West of True North	CHARACTER	A1	65	65	E = East of True North W = West of True North
		Filler	-	-	66	67	2 Spaces
	10	Name of Grid	CHARACTER	A5	68	72	e.g., III-A
11+m+n	1	Authority	CHARACTER	A64	1	64	Name of Authority under whose Direction the data is published
	2	Admn. Boundary Verification Remark	INTEGER*2	I2	65	66	1 = Adm. Boundaries are Verified 0 = Adm. Boundaries are not verified from appropriate Authority
	-	Filler	-	-	67	68	2 Spaces
	3	Triangulated heights and contours adjusted with spirit-leveled heights	CHARACTER	A1	69	69	Y = Adjusted N = Not Adjusted
	-	Filler	-	-	70	71	2 Spaces
	4	Territorial water upto 12 Nautical miles from the coastline	CHARACTER	A1	72	72	Y in case of data having coastline N in case of data not having coastline.
12+m+n to 13+m+n	1	Index to adjoining Toposheets	CHARACTER	A72	1	72	Sheet nos., separated by commas, in the order NW, N, NE and E in record No. 12+m+n and SE, S, SW, and W in the next record
14+m+n	1	Index to adjoining International Sheets	CHARACTER	A72	1	72	International sheet number of this sheet and the adjoining sheets in clockwise order separated by commas: NE,E,SE,S,SW and W. Example of international sheet no. H-43F
15+m+nto 14+m+n+q	1	Control (Tick) point Label	INTEGER*2	I4	1	4	1 = SW/LL, 2 = SE/LR, 3 = NE/UR, 4 = NW/UL999 = Reserved for Identifying the origin of Raster Image (For Raster data) 5 to 998 can be used for identifying other control (Tick) points within the sheet/ dataset
	2	Raster Image Orientation	CHARACTER	A2	5	6	Relevant for Control (Tick) Point Label = 999 ( i.e. raster data) BL = Indicates raster image origin at Bottom left and rasterization is bottom up ( row/ scan lines) and Left-right ( Colums/ Pixels) TL =Indicates raster image origin at Top left and rasterization is Top-down ( row/ scan lines) and Left-right ( Colums/ Pixels)
	3	Latitude	REAL*4	F12.6	7	18	In Degrees
	4	Longitude	REAL*4	F12.6	19	30	In Degrees
	-	Filler	-	-	31	36	6 Spaces
	5	X Co-ordinate	REAL*4	F12.6	37	48	Projected in ground terms in meters
	6	Y Co-ordinate	REAL*4	F12.6	49	60	Projected in ground terms in meters
	7	User Tick Label	CHARACTER	A10	61	70	User defined label for Tick point
	-	Filler	-	-	71	72	2 Spaces
15+m+n+q	1	O. S. Name	CHARACTER	A18	1	18	Specifies name of source Operating System
	2	GIS Package	CHARACTER	A18	19	36	Specifies name of source GIS Software
	3	DBMS Name	CHARACTER	A18	37	54	Specifies name of source Database
	-	Filler	-	-	55	72	18 Spaces