generating a curve through set of co-ordinates

Hello,

I need to generate an impeller blade profile using a set of co-ordinates. Is there any command to input all the co-ordinates at once in autocad. Could some one tell me what is the command?

Thanks for your help.

Vipra

well not to my knowledge, but that does not mean that it is has not already been done. There might be a LISP program that someone has written to do it. I just enter it manually... Ho Hum.. If you find an answer please tell us. It will save hours on roads and culverts.

I have myself done it long ago. I have jsut forgotten the command. It has something like using the command pline followed by co-ordinates and then with 'end'. I think I missed something and it is not working.

What format is your coord data? X,Y,Z, Excel???

just x,y coordinates. It is 2D profile. This data has been generated using a blade design program. I can be either excel or word.

in excel get the data in x,y format (hint...equation in cell C1 =A1&","&B1)

Highlight the column w/ the x,y data > Ctrl+C

In Autocad... Multiple > Point

at the Specify a point: prompt rt-click the command line > Paste

If you want a polyline... Pline > Paste as above.

You can also use Spline

Thanks a lot. I will try that and get back to you.

That worked. Thank you so much.

I think we can also creat a script file and run it. We can save the co-ordinates using commas with pline at the beginning followed by coordinates and 'end'. Save this file as .scr and type 'scr' in the command prompt. open the .scr file, it should generate the profile.

I have done this long ago, I just forgot that we can use script file.

How do you create a script file? I do not have the .scr file extension in Excel.

I may just have an older version of Excel.

In Excel, Saveas > Text... it will probably save as .prn file, rename to .scr

or highlight the column, Ctrl+C, open Notepad, Paste, saveas .scr

You can copy the coordinates on to notepad or wordpad as below.

pline

x,y

a,b

c,d

end

and save this file as .scr

in autocad command bar, type scr

it will ask you to open the file then open the .scr file you have saved and the curve will automatically be generated.

in autocad command bar, type scr

it will ask you to open the file then open the .scr file you have saved and the curve will automatically be generated.

... or just drag the script file in the drawing area :wink: