From: "Leatrice and John Johnston" To: Cc: "Johnston-John B." , "Johnston-David" Subject: Re:Website Feedback Date: Sat, 7 Jul 2001 17:08:39 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01C10707.7794F1E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C10707.7794F1E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear People, Regarding the table of corrections at http://www.j2geo.ndhq.dnd.ca/resource/100000_grid/TEXT_ONLY/50_text.htm I think there may be errors in some of the entries. -------------------------------------------------------------------------= ------- 31J/7: top.gif referred to in the html source code but missing from = directory http://www.j2geo.ndhq.dnd.ca/resource/100000_grid/map_html/box_gifs/31j_7= / -------------------------------------------------------------------------= ------- 66I/13: one of the V letters probably should be K -------------------------------------------------------------------------= ------- 66I/16: bottom.gif referred to in the html source code but missing from = directory http://www.j2geo.ndhq.dnd.ca/resource/100000_grid/map_html/box_gifs/66i_1= 6/ -------------------------------------------------------------------------= ------- 73G/15: in top.gif or bottom.gif, both V letters should probably be K -------------------------------------------------------------------------= ------- 87E/16: there seems to be a confusion between .tif and .gif -------------------------------------------------------------------------= ------- 95I/6: in top.gif or bottom.gif, both Q letters probably should be E -------------------------------------------------------------------------= ------- 340E/15: in top.gif or bottom.gif, both occurrences of S/T probably = should be G/H -------------------------------------------------------------------------= ------- 98E/F: this was the sole horizontal skewing error? -------------------------------------------------------------------------= ------- -------------------------------------------------------------------------= ------- I assume you are greatly enamored of the US Military for foisting upon = you the MGRS obfuscation which has obviously caused you much pain and = embarrassment. Once I understood from reading the Hotchkiss Third = Edition of "A Comprehensive Guide to Land Navigation with GPS" and = comparing that text with the NAD27/NAD83 two-sided MGRS map from the = Second Edition of same, I realized what a crock MGRS is and generated = some textual and graphical material to demonstrate just how obfuscating = MGRS really is. The materials are contained in my website at http://www.cs.nmsu.edu/~jbj/ The following is an excerpt from the homepage WARNING: Each of the following two graphics is a full-megabyte download. = The following display compares the MGPG and MGRS grids for UTM ZONE 13 = (both grids based on the NAD83 datum).=20 Metric Global Positioning Grid versus Military Grid Reference System=20 The grid location of Anthony TX-NM is indicated for both the MGPG grid = and the MGRS grid. Properties of this grid location make conspicuous the obfuscation which = results from attempting to partition the UTM-GRID which is based on METRIC measurements into UTM-REGIONS = which are 8-degrees of LATITUDE tall. The LATITUDE system and the METRIC UTM-GRID system are incommensurable = and incompatible.=20 The following display compares the MGPG and MGRS grids for UTM ZONE 11 = (both grids based on the NAD83 datum).=20 Metric Global Positioning Grid versus Military Grid Reference System=20 The grid location of Joshua Tree National Park is indicated for both the = MGPG grid and the MGRS grid.=20 The graphical material (a 1-megabyte download) is located at http://www.cs.nmsu.edu/~jbj/mgpg/zone13nad83.htm -------------------------------------------------------------------------= ------- -------------------------------------------------------------------------= ------- If you consider my opinion of MGRS to be in error, please tell me why = you consider it to be in error. Sincerely, John B. Johnston johnstonjohnb@qwest.net http://www.cs.nmsu.edu/~jbj ________________________________________________________ ------=_NextPart_000_0010_01C10707.7794F1E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Dear People,
 
Regarding the table of corrections = at
 
http://www.j2geo.ndhq.dnd.ca/resource/100000_grid/TEXT_ONLY/50_te= xt.htm
 
I think there may be errors in some of the=20 entries.
 
 
31J/7: top.gif referred to in the html source = code but=20 missing from directory
 
http://www.j2geo.ndhq.dnd.ca/resource/100000_grid/map_html/box= _gifs/31j_7/
 
 
66I/13: one of the V letters probably should be=20 K
 
 
66I/16: bottom.gif referred to in the html = source code but=20 missing from directory
 
http://www.j2geo.ndhq.dnd.ca/resource/100000_grid/map_html/bo= x_gifs/66i_16/
 
 
73G/15: in top.gif or bottom.gif, both V letters = should=20 probably be K
 
 
87E/16: there seems to be a confusion between = .tif and=20 .gif
 
 
95I/6: in top.gif or bottom.gif, both Q letters = probably=20 should be E
 
 
340E/15: in top.gif or bottom.gif, both = occurrences of S/T=20 probably should be G/H
 
 
98E/F: this was the sole horizontal skewing=20 error?
 
 
I assume you are greatly enamored of the US = Military for=20 foisting upon you the MGRS obfuscation which has obviously caused you = much pain=20 and embarrassment.  Once I understood from reading the Hotchkiss = Third=20 Edition of "A Comprehensive Guide to Land Navigation with GPS" and = comparing=20 that text with the NAD27/NAD83 two-sided MGRS map from the Second = Edition of=20 same, I realized what a crock MGRS is and generated some textual and = graphical=20 material to demonstrate just how obfuscating MGRS really is.  The = materials=20 are contained in my website at
 
http://www.cs.nmsu.edu/~jbj/
 
The following is an excerpt from the = homepage
 
WARNING: Each of the=20 following two graphics is a full-megabyte download. =


The following display compares = the MGPG and=20 MGRS grids for UTM ZONE 13 (both grids based on the NAD83 = datum).=20
Metric Global Positioning = Grid versus Military Grid Reference System
The grid location of Anthony TX-NM is indicated = for both the=20 MGPG grid and the MGRS grid.
Properties of this grid location make=20 conspicuous the obfuscation which results from attempting to = partition
the=20 UTM-GRID which is based on METRIC measurements into UTM-REGIONS which = are=20 8-degrees of LATITUDE tall.
The LATITUDE system and the METRIC = UTM-GRID=20 system are incommensurable and incompatible.


The following display compares = the MGPG and=20 MGRS grids for UTM ZONE 11 (both grids based on the NAD83 = datum).=20
Metric Global Positioning = Grid versus Military Grid Reference System
The grid location of Joshua Tree National Park is = indicated=20 for both the MGPG grid and the MGRS grid.=20
 
The graphical material (a 1-megabyte download) = is located=20 at
 
http://www.cs.n= msu.edu/~jbj/mgpg/zone13nad83.htm
 
 
If you consider my opinion of MGRS to be in = error, please=20 tell me why you consider it to be in error.
 
Sincerely,

John B. Johnston
johnstonjohnb@qwest.net
http://www.cs.nmsu.edu/~jbj
_= _______________________________________________________
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