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NZ Topo50 Sheet Index

Ollivier & Co
  • Added 03 Dec 2008
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NZTopo50 is the new sheet index for the 1:50,000 series in NZTM being prepared by LINZ for release in September 2009. This series is space filling and complete, unlike the hardcopy planned with some one third overlap sheets at the edges to avoid whole sheets with a tiny piece of land.

Each tile is 24 km x 36 km in a portrait layout designed to fit on a metric A1 page at 1:50,000.

The series also the basis for standard aerial photo tiles, with nested subsets at larger scales 1:25,000, 1:10,000 down to 1:1,000. Each sheet has a standard code eg BC30 with two letters to distinguish it from the NZMS260 series. The order is also corrected, the rows (first part) are now letters and the columns the second number so that the pattern is more intuitive. Larger sheets have an additional numbered grid within the main named sheet. The nested sheets also fit on an A1 page at their design scale.

Some sheets at the edges are now named with the adjacent sheet.

Although the army and scouts like to use the sheet name and short coordinates relative to the sheet corner, really in this modern age you should now always quote full NZTM coordinates for locations because gps units and other displays do not use sheets. even You could also list the sheet that the feature is on with the full coordinates.

Note that the thumbnail is slightly distorted because it is not displayed in New Zealand Transverse Mercator, the new standard for NZ maps. They would otherwise be exactly rectangular.

Names updated to match September 2009 hardcopy names.

Information

CategoryMiscellaneous
RegionsNew Zealand
MetadataISO 19115/19139, FGDC CSDGM, Dublin Core

Technical Details

Layer ID 415
Data type Vector polygon
Feature count 448
Attributes DESC, PRIME, row, col
Services Vector Query API

History

Added3 Dec 2008
Last updated3 Dec 2008
Revisions 5 - Browse all revisions
Current revision Imported on Oct. 17, 2011 from Shapefile in NZGD2000 / New Zealand Transverse Mercator 2000.
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