Draft operational guidelines of digital india land records modernization programme (dilrmp) introduction

2.2 Tracing or re-production of the analog map
If the sheet is not suitable, then the sheet has to be sent for tracing (preferably on a 75-100 GSM mylar film) or reproduction of the sheet by the LRD. The reproduced sheet has to be quality checked (DQC-1) and finally sent for scanning. The maps are to be traced using the following specification:

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  Tracing to be done on 75 micron polyester film.
  
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  Tracing should be done with 0.1 pen using black ink only.
  
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  All the features should be traced.
  
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  The labels should be placed neatly in the center of the feature with free hand drawing.
  
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  In case the feature is too small to accommodate the label, it should be placed at a convenient location with a marker arrow.
  
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  The heading and legend data should also be traced along with scale, north arrow, sheet no., etc. along with map border.
  

2.3 Sheet indexing and tics (tick-marks) highlighting


2.3.1 All sheets have to be indexed with appropriate index numbers. The index number is to be generated using the village metadata with respect to the various administrative codes (State, district, tehsil, and revenue inspector/patwari/thana/mouza and village code). The index number should be a unique number with information of the administrative hierarchy of the village. A typical example of index number may be I120501007035101 (IDDTTRRHHHVVVVnn).


2.3.2 One of the very important processes before scanning is the highlighting the tics (wherever they are present) and transferring of the tics (where absent). The following procedure should be followed in this regard:

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  Gridlines & tics are available - The tics on the maps may be faint or in the form of grid lines. Uniformly distributed tics should be highlighted with a cross (X) depicting the exact intersection of the gridlines or tic position. The distance between the tics/gridlines, based on the scale, has to be ascertained and measured. This will be useful in selecting the mathematical grid for grid correction.
  
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