+ Reply to Thread
Page 2 of 2 FirstFirst 1 2
Results 11 to 18 of 18
  1. #11
    Forum Deity
    Using
    AutoCAD 2002
    Join Date
    Sep 2006
    Location
    East Sussex, U.K.
    Posts
    4,040

    Default

    Registered forum members do not see this ad.

    One would hope that these sort of questions would be set with some sort of verisimilitude, to reflect real life situations.

    The example is a fictitious site, where soil samples are taken.

    GPS readings are identified as both UTM and GDA94. Whereas both these systems should give similar figures, it is tautology to mention both. What is lacking is the Zone number.

    Usually with soil samples, it is sufficient to give a coordinate to the nearest metre. In that case, Local Scale Factor would not make a difference. But because all coordinates are given to the nearest millimetre, LSF would make a difference. Ask, in class, for an explanation as to how much difference it would make over 125.000 metres.

  2. #12
    Forum Deity
    Using
    AutoCAD 2002
    Join Date
    Sep 2006
    Location
    East Sussex, U.K.
    Posts
    4,040

    Default

    I have just found out another mistake in the question.

    As the area of the survey is in Australia, because of the GDA94, the Northings should have been labelled Southings.

    These errors are unforgivable. Even in fantasy land, there should be a basis of truth.

  3. #13
    Forum Newbie
    Using
    AutoCAD 2014
    Join Date
    Sep 2014
    Posts
    8

    Default

    Slightly concerning as I'm doing an engineering course and this was set by an ex geological engineer.

  4. #14
    Forum Deity
    Using
    AutoCAD 2002
    Join Date
    Sep 2006
    Location
    East Sussex, U.K.
    Posts
    4,040

    Default

    Ah, a geologist. He probably did his surveying by pacing out the distances on a compass bearing!!!

    I expect you will end up with something almost like this.
    Attached Images

  5. #15
    Forum Newbie
    Using
    AutoCAD 2014
    Join Date
    Sep 2014
    Posts
    8

    Default

    Yeah he's pretty old school.

    Also, I feel like this is a really stupid question, but did you draw those symbols yourself or do you insert them from some standard library?

  6. #16
    Forum Deity
    Using
    AutoCAD 2002
    Join Date
    Sep 2006
    Location
    East Sussex, U.K.
    Posts
    4,040

    Default

    Those symbols are one of the standard AutoCAD points. Look at the Point Style.

  7. #17
    Forum Newbie
    Using
    AutoCAD 2007
    Join Date
    Oct 2015
    Posts
    1

    Default



    How can I have Drawing two points with coordinates UTM with two different zones in autocad ???

    for example 38s 736274 3712697 and 39s 332922 3707118
    please hellp me!!!!!!

  8. #18
    Forum Deity
    Using
    AutoCAD 2002
    Join Date
    Sep 2006
    Location
    East Sussex, U.K.
    Posts
    4,040

    Default

    Registered forum members do not see this ad.

    I have never known a drawing with two UTM zones in it. Even when I was working in the Arctic and we had two sites which were three UTM zones apart. The earth's curvature makes drawing on a plane surface tricky.

    I would convert those coordinates to Latitude and Longitude, and you could then get the great circle distance between them.

Similar Threads

  1. Moving objects to absolute coordinates
    By TKall in forum AutoCAD 3D Modelling & Rendering
    Replies: 11
    Last Post: 22nd May 2013, 06:24 pm
  2. Convert mouse coordinates to drawing coordinates
    By M76 in forum .NET, ObjectARX & VBA
    Replies: 8
    Last Post: 26th Aug 2011, 12:07 pm
  3. Drawing a 2D objects with assigned coordinates
    By xtrael in forum AutoCAD Beginners' Area
    Replies: 1
    Last Post: 6th Mar 2010, 09:20 pm
  4. Disassociating dimensions objects from fixed coordinates
    By Autodesk in forum AutoCAD RSS Feeds
    Replies: 0
    Last Post: 4th Jan 2007, 02:41 am
  5. How can I export X, Y coordinates of objects??
    By acatalin2003 in forum AutoLISP, Visual LISP & DCL
    Replies: 6
    Last Post: 16th Oct 2005, 07:32 pm

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts