Create polylines from existing objects

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Poly

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lines are unique and useful objects and provide possibilities

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that simple lines and arcs just can't offer.

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And rather than trace over existing lines and arcs to create a poly line.

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Usually these existing lines and arcs can be converted

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or joined together into a poly line object.

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After completing this video, you'll be able to

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turn existing geometry into poly lines

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open the site boundary drawing provided in the data set.

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This drawing contains a collection of lines representing

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the boundaries of a few site parcels.

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They need to be converted to poly line boundaries to determine the area of each plot.

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First, we'll use the P edit command to combine the existing geometry

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on the ribbons home tab,

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expand the modify panel and choose edit poly line on the command line.

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Pick the multiple option

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to allow us to convert and join multiple objects.

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Select the boundary lines around plot a and press.

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Enter answer yes to convert these objects into a

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poly line and then choose the join option.

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The fuzz distance is the distance autocad

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should look from an unattached in point for another object.

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In its attempt to join nearby objects. The joint type option instructs autohead

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what to do when a gap is found either to fill it gap by adding a straight

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line segment or to extend or trim the

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existing lines to the point where they intersect.

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The both option will do an extend or trim if possible.

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And if not, then it will add a straight line segment

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between the nearest end points.

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Leave this option set to extend and assign a fuzz factor of 18 inches.

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The command line states that five segments were added to a poly line.

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But in looking at the boundary poly line that was created,

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we notice that the corners don't appear correct.

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The line types pattern doesn't start and stop at each vertex.

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But instead the pattern is continuous around the entire boundary.

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The L type gen or line type generation option can be turned off

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which then forces the line type to start and stop within each vertex of the poly line.

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Press enter to complete the command for the other boundary.

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We'll use the joint command again,

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expand the modify panel and choose the joint command.

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Select the lines representing the boundary

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and press enter autocad

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reports,

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four objects converted to one poly line and note that the corners look correct.

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This is because the line type generation option that we changed before

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is by default disabled or turned off when using the joint command

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using either of these joint options,

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eliminates the need to redraw poly lines when existing lines

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and arcs can simply be converted and joined together.