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A coordinate-based data model that represents geographic features as points, lines, and polygons.

2 votes
1 answer
121 views

Analyzing map data in QGIS [closed]

I downloaded vector data of a map from tiger products and loaded them in QGIS. it renders the map as expected and I can see the attributes too. but how to understand the data and the map ? … Is the attribute table data is the vector data of this map, if not whats the exact vector data. can some one provide any example vector for a map line. …
makot's user avatar
  • 75
0 votes
2 answers
156 views

Interpretation of the vector data

I started with QGIS and loaded a data set from Tiger products (namely US rail roads) I can view each part of the road and I can get its vector data as well. … But I am unable to understand the vector data of the segment. can some one help me/ point me to any helpful resource This is the sample set of a rail road segment: GEOGCS["GCS_North_American_1983",DATUM …
makot's user avatar
  • 75