I have some existing eastings and northings and want to find new ones?

[arusse23]

This is my first time working with coordinates. I have some existing eastings and northings and want to find new ones? Can I assign these values to the points within the drawing to allow me to get relative values for other points?

 

Any help is appreciated

[alanjt]

This is my first time working with coordinates. I have some existing eastings and northings and want to find new ones? Can I assign these values to the points within the drawing to allow me to get relative values for other points?

 

Any help is appreciated

You can extract the XYZ from any picked point with the ID command and you can enter a specific XY[Z] at any prompt to 'specify a point'.

[arusse23]

how do you enter the specific point? can you explain this using an example easting 2017.28 and northing 4980.46

[alanjt]

Remember that Northing (up and down) is the Y and Easting (left and right) is the X value.

 

eg.

Command: l
LINE Specify first point: 0,10

Specify next point or [undo]: 0,0,0

Specify next point or [undo]:

[crushmaster]

what is 'eastings' and 'northings'?

[alanjt]

what is 'eastings' and 'northings'?

I can't help myself.

[arusse23]

i'm sorry I dont get it? can you explain using the example coordinates i gave so that when I use the ID command i get those coordinates on that specific point.

[alanjt]

i'm sorry I dont get it? can you explain using the example coordinates i gave so that when I use the ID command i get those coordinates on that specific point.

Just apply my example to your coordinates...

 

[arusse23]

Okay I have managed to use one coordinate to get that drawing moved to that point.....unfortunately the rest of the coordinates that I have written down (provided by an engineer) are not matching up when I use the ID command. Any suggestions

[alanjt]

unfortunately the rest of the coordinates that I have written down (provided by an engineer) are not matching up when I use the ID command. Any suggestions

 

Elaborate please.

[arusse23]

I used the method shown above to get to a specific point: easting 2017.28 and northing 4980.46 which is a pile centre ......I then move the drawing to centre the specific pile to this point. When i used the ID command it gave me the correct readings of x and y as above. However other pile centres were wrong when I used the ID command again.

 

Any ideas?

[eldon]

Any ideas?

 

Without a lot more information from you, it is very difficult to tell exactly how you are doing things.

 

You say that this is your first experience with coordinates. How long have you been using AutoCAD?

 

Posting a drawing (with only the relevant information) might help. What you really need is someone to look over your shoulder, and make helpful remarks.

[arusse23]

sounds like a good idea, when can you send someone out?

[eldon]

Well, again you are not telling us all the information, like where in the world you are from.

 

Even if you admit to a general region, someone might be just around the corner.

[arusse23]

i think i have figured it out. the drawing is 1000 times to large as the coordinates are in metres and i need to rotate the building to suit the rotation on site. The coordinates I have been given must have been taken from another drawing and therefore the drawing is sqaure to model space but not my particular site. so i am now trying to figure out the best way to rotate so all the coordinates meet up.....can you help with this?

 

i am in Prestwick just now btw

[eldon]

i am in Prestwick just now btw

 

A bit far for me today, besides I have to get a drawing or three out

 

A useful command, when using two drawings of different units (mm and m) is X-ref. You enter the scaling when you insert one drawing into the other. Then you can drag and align the inserted drawing, and it all stays together like a block.

 

You could use the command Align after you have done the X-ref.