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Detecting curves on a line automatically!


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Posted

Hello everone:)

 

I work on a field of railways and most of the time i spend my time finding radiuses and lenghts of curves between two railway points. I wonder if autocad could do that automatically for me:)

 

Thank you.

Posted

Do you want to extract data about the arcs, or just select them so you can see the arcs?

Posted
Do you want to extract data about the arcs, or just select them so you can see the arcs?

 

I want them both:) i want it to select all the arcs between two points then extract all their data.

Posted

There may be other ways, but here's one:

 

To select only the arcs, use the QSELECT command with the "Select Objects" option (the button at the top right) to select only arcs that are within a window you specify. You can use the LIST command to view their properties, or....

 

To extract the data, to a file or table within the drawing, use the DATAEXTRACTION command. You can use the "Select objects" option (button) on page 2 of the wizard to make a selection within the drawing. If you've used QuickSelect first, just press "P" for [P]revious selection when it asks you to select the objects and it will select just the arcs that you had previously filtered with QSELECT. Alternately, you can just go to page 3 of the wizard to extract only the arc data.

Posted

Another related question..

 

I managed extraction of data to an excel file but i need to queue the arcs from right to left as from above to bottom in the excel. I think i should extract the start X information then use queue function in excell but there is no start X information for arcs(or i dont know how to see, i havent seen it in the properties box.) When i use center X info then some of the arcs which are close each other can missqueue. Any suggestion:)

 

Thank you.

Posted

A bit out of my league but perhaps a trig formula to extract the X endpoints using the angle and the radius for each arc.

 

I'm guessing there's already a lisp out there that does this.

Posted

Are you sure they are arcs? When I select an arc, I get Start X, Y & Z; Center X, Y & Z and End X, Y & Z.

Posted
Are you sure they are arcs? When I select an arc, I get Start X, Y & Z; Center X, Y & Z and End X, Y & Z.

 

In properties, Yes, but that's generated information about the arc based on the centerpoint, angle, radius and length, rather than defining geometry that can be directly extracted.

Posted
Another related question..

 

I managed extraction of data to an excel file but i need to queue the arcs from right to left as from above to bottom in the excel. I think i should extract the start X information then use queue function in excell but there is no start X information for arcs(or i dont know how to see, i havent seen it in the properties box.) When i use center X info then some of the arcs which are close each other can missqueue. Any suggestion:)

 

Thank you.

 

He stated he couldn't see it in the Properties box.

 

I would use a table in AutoCAD and populate using fields.

Posted

See if this helps you. The last 2 programs are fine, the previous ones are affected by a character coding error. Just post here if you want one of the old ones.

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