AutoCAD LT :: Select Polyline By Value In Attribute
Nov 6, 2013
I am currently dealing with a question for a project I am working on. I have a complex building, in which all rooms are described by a tag. The tag is a block which contains as attributes several kinds of information about that room (height, finishing, etc.). One attribute is the surface of the room, which is linked to a polyline by a field (if the polyline changes, the surface attribute changes consequently.
Now, basing on the fact that there is a correlation between my block containing the attributes and the polyline (the correlation is given by the surface field), I would like to select polylines in my drawing basing on specific values in my attributes block. Example: I want to select all the polylines which are linked to the blocks containing as an attribute the text "1.1.1.1.1", or the polylines linked to a block containing as an attribute the text "library".
This would save me loads of time to generate some specific drawings.
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Aug 10, 2012
I can do this in AutoCAD Map but I have my doubts. I will explain in ESRI GIS terms (this is what I am familiar with) and I hope you can tell me if I can do this in AutoCAD Map. In ESRI ArcMap I can select a line and I can hit a Select by Location button. In this window I can select all of the objects that intersect my selected line. Then I can delete them or export them etc.
In AutoCAD Map I have a polyline selected. It is my road centerline. I want to be able to select all of the other polylines that intersect my selected polyline. Is there a way to do this? I need to erase those polylines. Usually I will pan to each of them and select them individually. It just seems to take a lot of time. My AutoCAD co-worker said I could use a fence and draw the fence through my polylines. It seemed to work ok but I accidently deleted extra things that I needed. So I'm back to manually selecting each one by one unless you know a different way.
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Apr 25, 2012
I have a inserted block with 4 tags for Length, Thickness, Elevation and Width.How can extract attributes tag values and draw a closed polyline + 2 internal lines, parallel to the block?
Block Name: ID_DATA
Tags: LEN, THI, ELE and WID.
Each internal line placed in a third width.
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Aug 19, 2011
Is there a way to select more than one polyline at a time and get a total LF of all of them together?
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May 23, 2011
Is there a way to select objects within a closed polyline? I thought there was but I can't remember how to do it.
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Mar 30, 2011
Im practicing for my CAD certification test and im trying to select all objects inclosed in a poly line. Right now i have a bunch of random circles and a random figure drawn in the middle of a bunch of circles. How do i select ONLY the circles that are completely in the object?
P.S. I would add a picture but i don't know how to take a screenshot on windows xp.
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Nov 29, 2012
I have a drawing with many block references on it and they have some attributes.
I know how to find the block reference witch the attribute value, and even change it but I don't know how to select it once I have the object ID of the block.
How can I do the selection without asking the user to select it?
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Mar 20, 2012
My Computer just recently jusst got switched to a new server...
Somethings are just acting weird now, like my hatching...
All my old hatches that were associative are acting like one seltions like if i hatch a polyline now when i go to select that hatch it now selects the polyline as well.
This never happened before abd the only way to edit it now is to either make it in the properties not associative then i lose my boundary or just to explode it then i a ihave an exploded hatch...before i made it assoc. and i could just edit or select the hatch only i think its an option setting...
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May 17, 2011
I have polylines that when selected, under properties it lists Object Data for the selected polyline. There are like 10 categories. This drawing is actually creeks in a county and they have object data connected to them where some are "a" some are "b" classification and I want to select all of the "a" polylines and put on a diffrent layer.
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Mar 30, 2012
I need user to draw a closed ployline. Is it possible to use VBA to code a procedue that the effect looks like the WPolygon of select ?(2 rubber-band lines)
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Aug 5, 2013
I would like to select a polyline that will either be straight or contain bulges and offset lines either side of it a prescribed amount, I have tried a couple of options that don't involve picking points on both sides to no avail.
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May 13, 2011
How can I drag-select muliple vertex points form a polyline, a workaround I found is:
-select object
-shift select first vertex, shift select next vertex, etc
But this workaround is limited because I want to delete those vertexes, I cannot find the remove vertex command when I have multiple vertexes selected.
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Nov 11, 2011
Lisp program, by selecting on screen multiple block attribute and to change those selected (by picking) attributes to colour 252.
At the moment, I'm using a custom macro : ^C^C-ATTEDIT C;252;;
But if I've got a lot of attributes to change, it takes awhile to complete.
I know about BATTMAN but I do not want to change the block entities in that way. The reason I want to change the attributes to colour 252 is because here at this company we do existing drawing in colour 252 and any new equipment on its proper layer colours.
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Dec 16, 2013
I would like to select blocks based on the layer of one or more attributes. The obvious method would be to isolate that layer and select the ones with attributes that display. But many of the values are empty!
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Aug 14, 2013
I've got 1800 attributes that need to be numbered from 1 to 1800 from left to right.
I got a Lisp that can do that but the only thing is when I select it with selection window, he wil sort all atributes on their unique handle code. So I have the first 40 attributes going from left to right with groups of numbers at the wrong place like 1-10, 31-40, 21-30, 11-20 instead of 1-40.
This is because when you copy an attribute he wil place a new unique handle coded attribute and the copy contains the previous handle code.
But if I select them one by one from left to right and run my lisp it just works fine cause it seems it doesnt look at the handle code to place the numbers in that order.
So is there a way that I can select multiple attributes, like I'm selecting them one by one from left to right, so I can bypass this attribute handle code?
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Nov 6, 2013
Is there a way, when you are drawing a polyline, to have the tooltip box show the cumulative length of the polyline, rather than the length of the current segment being drawn?
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Jun 7, 2012
I would like to take all the vertices out of a multiple-vertices polyline so that it reduces to just its start and end points, can this be done?
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Sep 21, 2013
Due to modeling purposes, I need to convert a 3D polyline to a spline. What I have been doing is:
- change polyline fit/smooth to cubic from properties
- convert polyline to spline by typing spline -> object
- method -> fit from properties
You can see the original 3D polyline (green) and the resulting spline (magenta) in the attached drawing.When I zoom in and measure the distance between the two entities at different points along them, at some points the perpendicular distance exceeds 5 millimeters, and I want to ensure the deviation remains under 1 millimeter or even less.
I know I can change the knot parameterization of the spline, and this does work at some locations, but the difference increases at others.Why is there a 5.6 mm difference between the spline fit point and 3D polyline vertex, as measure in the attached drawing?
Now, I can go and manually stretch the fit point to coincide with the vertex. Also, I can add fit points between existing ones to drag the spline closer to the original 3D poly.
However, some of my polys are really long, and it is very time-consuming to do this manually while measuring points along the entities to make sure the distance stays small enough.
how to automate this process? For example a lisp that would maybe take the original vertex points, add say maybe 3 (not too many) new ones between them, and then generate a spline while making sure the deviation is less than the set value of 1mm? I am using AutoCAD 2013.
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Nov 11, 2013
I've been working on a custom polyline object, and I've got it functioning!!Having said that, I plan to run its creation around picking a point for bounary selection.
(Other than trying to step through every vertecies) is there a technique I can thow the polyline data from a traceboundary result into my custom object? I've been trying to add the polyline from traceboundary to my object BEFORE it's added to the transaction by the way...I assume that's right, since I want to put it's data in my custom object then add my custom object to the transaction instead.
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Jun 3, 2011
I've got hundreds of files to convert.
In VBA, how can I batch convert field attributes in blocks to text attributes while retaining the blocks? Is there a simple way to univerally convert them all at onceusing VBA? The plotted values for the fields must be retained, too.
Explode will not retain the value of the field.
Burst will not work as it explodes the blocks as well.
You can right-click on the field and slelct "Convert to text" from the RCM. So I know that the process exists within CAD, just need to batch the process for a quantity of DWGs at a time - in VBA.
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Jul 3, 2012
I wanna transfer my attribute block values to another attribute text blocks , is there any lisp for that?
Is there a possibility for sum tag values of choice attribute blocks to inside of another attribute text block ?
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Jun 29, 2013
I want to convert a 3D polyline to 2D polyline.
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Sep 16, 2011
Is there any way at all to draw a new polyline - from the endpoint of another polyline, and have it automatically join as one polyline from the existing section??
I know this can be done via PEDIT, but its so laborious and soo many clicks, and I have alot of segmented Polylines that I need to consolidate when I draft.
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Dec 8, 2011
Background: Someone exploded an attribute block and copied it hundreds of times throughout a project, each time changing the Attribute Tag to match the Value they expected to appear in their drawing. The drawing must be xrefed, so the attribute definitions do not appear.
(There is only 1 attribute in the block.)
Proposed Solutions:
1:AutoLISP routine which copies Tag data from Attribute Definition into Value of Attribute Block:
Prompt-Select Attribute Definition
Copy Tag data
Prompt-Select Attribute Block
Paste data into Value
(Allow repeat to speed workflow)(*PREFERRED*)
2:AutoLISP routine which copies Tag data from Attribute Definition into Default Value and creates a new Block:
Prompt-Select Attribute Definition
Copy Tag data
Paste data into Default Value
Create New Block
(Select Multiple Objects)(Creates tons of new blocks which are messy)
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Mar 16, 2012
I am using M Text Attributes to store imperial lengths in the drawing, feet inches and fractions (stacked). When I read back the Text String property which, is the M text Attribute.Contents parsed, I am having problems because the parser does not add a space between the inch and the fraction. So, is there any setting that could be used to tell the parser to add the space between the inch and the fraction?
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Dec 21, 2012
creating a block with attributes. I did manage to get my block set up and inserted in a dwg, but I am unable to change the "value" of any attribute. Unless I click on the "..." button next to the value field.
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Oct 5, 2012
What I really want to do is on our fire alarm blocks we have 3 different attributes one for the address, the candela and one for misc info. I want to make an attribute that takes the number from the candela (15,30,75or 110) and change a different attribute to a value depending on which candela we use (such as 15=.078, 30=.113, 75=.195 or 110=.259). But I don't want the .078,.113,.195,.259 to print out on paper, I want to export block information excel file so I can add up all values.
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Mar 22, 2012
Any way I can align a new polyline to a reference polyline (orig polyline).
The 2 polys will be generally the same length, however, the number of vertices will differ.
Also I need to mantain the same distance between the vertices on the new poly and the new and reference poly won't follow the same direction.
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May 18, 2011
How do you find 'if' a polyline is inside another polyline?
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Jun 15, 2013
I want to copy attribute values. I'm making a catalogue of all the reinforcements in my drawing so I need to name those reinforcements. So what I want is to make a string of text that I don't need to totally modify everytime. Something like this:
Amount of reinforcement bars - 5
Diameter of the reinforcement - 12
Division of reinforcing bars - 100
Reinforcement bars: 5-T12-k100
So the only attributes I'd edit would be the first three not the last one. So how can this be accomplished?
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Mar 2, 2012
How do you convert a closed Polyline to 2D Polyline? CONVERT does not work in reverse.
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