TWD67 Taiwan Triangulation Points' Coordinates

The files consists of names, coordinates, elevations, etc.

Downloads

Version 2: Taiwan (54 KB), nearly 2600 points. Penghu, Jinmen, Mazu currently unavailable.

2005.11: Thanks to Guo Jialong for providing some corrections from MOI Satellite Center
Version 1: Taiwan, Penghu (82 KB), about 2000, 65 points. Fewer points, but in a few spots better than version 2.

This Version 1 point distribution map reveals a hole. Version 2's is about the same but the islands are gone.

Q: How can I read the files?

A: First unzip the .zip files.
.csv (comma separated values) files

use excel, gnumeric, or a plain text editor to open.

I ordered the data by elevation.
The coordinates are TWD67 Huzishan ("Hutzushan") 2-degree wide Transverse Mercator projection
- X coordinate
  - For Taiwan x=250000 is longitude 121 east
  - For Penghu x=250000 is longitude 119 east
- Y coordinate: For all y=0 is the equator.
map quadrangle name:

Version 2 : Corresponds to current 1:50000 maps, 15 x 15 minute quadrangles.

Version 1 : Seems slightly different than the above sheet names and edges Penghu's all say "Penghu"!
Page: of a Chinese book by the Interior Ministry and the Army, approximately titled "ROC Taiwan Area Triangulation Point Compendium", finished Feb. 1980, restricted from the public.

If we order the list by page number, we will visit each 1:50000 map in order of their map number, and within each map, we proceed from south to north.

English headers:

Version 2: page,map sheet,name,rank,number,county/city,town,x coordinate,y coordinate,elevation
Version 1: name,rank,number,x coordinate,y coordinate,elevation,map sheet,monument stone material

One would think about unifying the versions, but there are too many small inconsistencies...

Q: Got any more points between Yushan and Batongguan?: A: All I have are what you see. Those points should fall into on or two quadrangles. Sort the list by quadrangles and they might be easier to find, if there are any.

The data is from before the 1999.9.21 earthquake, so they might be skewed up to 8.5 meters now, and even less worth as a "military secret".