AutoCAD 2013 :: Ellipse And Arc Inconsistency
May 9, 2013
I have an ellipse with equal radii, I changed it into an arc, but I can't make it fit.
In the attached drawing, there are 3 entities.
1. The original ellipse - red
2. Arc that has the same start angle and end angle as the ellipse - grey
3. Arc that fits the original ellipse - green
Now this is strange, because the ellipse seems to have a different CS for the angles. I had more ellipses in the drawing, but some of them don't have this anomaly.
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Oct 12, 2012
Okay so is there anyway to enter the whole equation of an ellipse into autocad and it will map it? ex x^2/a^2+y^2/b^2+z^2/c^2=1 with different values for x y z a b c. I want to generate different ellipses and then loft them together?I just want one the starts with the basics and goes all the way to the move advance stuff.
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May 3, 2012
Our customer send us drawing with ellipse into.With Autocad 2008 I bought a plug-in call SplineConvert that did the job perfectly but not compatible with 2013.
Is there any plugin that could replace that tool ?
Is there any standard ACAD command that could easily do this Job ?
I need a way to make 2 or 3 times per week this converting on all ellipses of large and detail 2D drawings so no time to offset in and out all those .
I try also DXFOUT in R12 but all the spline are being converted into 3d polyline making a huge files that froze my PC.
I also try FLATTEN but did not see how it work , the ellipse stay an ellipse.
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Aug 1, 2013
How can I take and display the lenght and the radius of all elements in my DWG.
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Feb 20, 2013
How to divide ellipse into line segments(equal/unequal lengths) of required accuracy or tolerance?
tolerance = mid-ordinate distance
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Mar 24, 2004
I am using a 17" iMac with PS7.0, Indesign2.0 & Acrobat6.0Pro under OS10.3.
When I view & save a grayscale image in PS it looks fine, same in Indesign. But when I export to PDF & view with Acrobat it looks too dark. I had proofs done from the PDFs recently & they lacked contrast, but were not as dark as the PDFs viewed in Acrobat. What is going on? My printer says it is a calibration issue between my monitor & their equipment, but I am more inclined to think that it is realted to my not embedding pofiles in the images. How do I get consitent results?
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Sep 27, 2012
Photoshop and Flash consider the clockwise direction a positive rotation. Illustrator and InDesign consider it a negative rotation. Will this ever be consistent among Adobe applications?
[URL]...
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Aug 29, 2013
When I set the dimensions of two images to identical widths and heights, they do not appear as the same size when viewed at the same zoom level in Photoshop. Also, they aren't the same size when opened with other programs. Why this inconsistency?
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Oct 25, 2012
Just the other day I was reproducing a logo that was in a bitmap format, I got it all going then I tried to color match it..., the file was supplied as PSD,
I cropped the RGB color data and reassigned that into coreldraw, after looking at the image with both PS and DRAW side by side on the same monitor . I noticed that they color looks slightly different. Well both my apps are set with the same color profile,
Most of the time I work in RGB color space and I do lots of digital printing as vehicle wraps and wall murals and numerous sign faces thus color accuracy is very important to me but the rendering inconsistency really troubles me.
Both Coreldraw and Photoshop are set to Primary color mode RGB - Adobe RGB 1998
Cmyk output set to web coated SWOP V2
Rendering intent set to Relative Colorimetric. All rendering filters are turned off. Both applications are setup identically. Here is a pic
Notice the green color , same values / same profiles.
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Oct 9, 2012
Been trying to install PSE 10. At first install got exit code 7 errors. Try to download the "fix" Fix wouldnt download -- Chatted with Tech Support-- Chatted for a 2 1/2 hours. Tried multiple things - Now the installation gets to about 2% then gets the error " Inconsistency in installer database"-Chatted again now download gets to 17% than get an exit code 7 error- Mac OSX Version 10.6.8-- Processor 2.26 Ghz Intel Core 2 Duo --
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Aug 5, 2013
I am trying to create a cylinder. To accomplish this I am creating two ellipses and two lines. After I try to insert them in the DWG dwaing I can see only the lines. Here is a code sniped so you can see what am i doing.
Double ellipseRadiusRatio = 0.4; Vector3d ellipseMajorAxis = new Vector3d(0.0, 1500.0, 0.0);
Vector3d ellipseLeftCenter = new Vector3d(72541.7, 80198.5, 0.0);
Vector3d ellipseRightCenter = new Vector3d(77145.7, 80173.6, 0.0);
Ellipse leftEllipse = new Ellipse();
[Code] ..........
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Jan 25, 2013
I need to make an ellipse that's cut in half, and I have no prior 3D experience that's useful to create this shape.
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Jan 4, 2014
I'm trying to make a (for lack of a better term) squarish ellipse.
I've tried a few things but they don't work too well, i.e. plines and lofting a rectangle with an ellipse then cutting it two but they just get me arcs that meet at sharp points.
The jpg below is meant to show what I'm trying to do.
I want to take that one quarter of an ellipse at the intersection and stretch/pull it to the midpoint of the line between the corner of the rectangle and the arc. The ellipse is made out of 4 ellipse arcs. I want to stretch just the arc without moving the ends of it at the quadrants.
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Jan 16, 2012
how to create ellipse in autocad similar with below image? URL....
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Aug 8, 2012
Recieved a ACAD converted Microstation File for use in an upcoming construction project. Would like to convert all of the existing ellipses to polylines. Have read several threads that lead me to believe redrawing them is about the only real way to do it. Posting here in hopes of a solution. Drawing contains 127 ellipses, and I dont want to redraw all of them!!
Currently on C3D2012.
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Mar 15, 2013
I want to create a new order. when using the order,It will create a ellipse and a DTEXT .I mean the ellipse and the DTEXT are a whole. when move the ellipse the DTEXT will alse move.However, users can edit the DTEXT.
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Nov 13, 2011
I'm trying to find a way to inscribe an ellipse into a triangle (not an equilateral triangle), i.e. the ellipse touches the 3 inside sides of the triangle.
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Oct 12, 2011
The path array in 2012 is a very useful addition but I can't crack a solution to creating an array around an elipse (like chairs around a board room table). The only way I've found it to work is to break the elipse and then join up the gap, essentially creating a closed eliptical arc. This gets a result but it seems a very scrappy work-around to something which should simply work.
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Jan 12, 2012
i'm using Autocad2012 now. when i use paste special in objects and give x or y insertion scale. after i do explode that object the arcs are converted in to ellipses and it come with ellipse grips. before 2012 version it won't happen. what's the change in autocad 2012? is there any variable to change?
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Sep 18, 2011
I would like to arrange equally spaced circles around an ellipse. I understand I can do this with the Divide command, as referenced in a previous thread on a similar subject
[URL].......
But I thought I could also use the Path Array command using an ellipse as the path.
What I get is the replicated objects (small circles) following some totally random path. Strange that this happens only with an ellipse - seems to work OK if the path is a circle or spline.
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Mar 15, 2007
I use all my knowledge of technical drawing from school many years ago to produce drawings in AutoCAD 2002, but I can't remember how you would define the dimensions of an ellipse in a drawing so that someone could produce it from the plotted output.
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Jul 6, 2013
Is there any Command / Lisp / Parametric way of obtaining a "prospective" ellipse from a set of 5 points?
5 Point Ellipse.png
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Oct 8, 2012
I have a database of the 50 stars closest to the Sun. I wrote a program that translates Right Ascension and Declination into X,Y,Z coordinates on the "normal" UCS view.
I created all stars in 3D, distances to scale (1m = 1Ly), stars as spheres 0.1Ly radius (so they are visible !) Now, I need to draw the elliptic trajectory of a rogue "planet", starting near Lacaille8760 (6.456, 7.664, -8.076), passing near the EZAquarii, A, B & C, located at 3.557, 10.268, -2.973, to get a slingshot that will launch the planetoids towards the Sun (0,0,0). The elliptic trajectory should be a 3d "tube" a few pixels dia.
Problem:
How to set the screen coordinates to the plane formed by the 3 points above, so the ellipse can be drawn on a plane ? I changed the UCS to 3 points, and the screen shows the three stars on the same plane, but when drawing the ellipse, it is to the original UCS...
I'll make the ACAD files available for download at [URL]...... "TECH" tab. Once created, the drawing is used in R14 format to be imported in 3DSMax8 to get easier views and animation.
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Feb 14, 2013
I'm having difficulty with a sheet metal part creating a flat pattern for it. The shape is an ellipse with the dimensions shown in the second picture. When I attempt to create a flat pattern it just shows the side of the part. The sheet metal defaults are correct for the part and it was ripped to created a base point for the pattern. I need to create a DXF for manufacture. I would just use the flat pattern it gives me and mirror it twice to create a pattern but it doesn't factor in the radius of the part. How to create a correct flat pattern for this item?
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Jul 7, 2011
Is it possible to find this center of ellipse by drawing, not mathematically by equation/formula?
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May 9, 2011
I am trying to create a 3D elbow that is Ellipse at one end and is circular at the other.
I've attached and example of what im trying to make.
Elbow.jpg
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Nov 29, 2013
I know that stretch will not affect major or minor radius of an ellipse in dynamic block.
What I would like to be able to do is use properties of an ellipse and some kind of parameter to be able to affect values in properties.
I know how to get ellipse radii data out of a block, but I simply cannot find a way to get them back in...
Is there a way to link field data back to block...?
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Feb 3, 2012
Is there a way, using dynamic blocks, to rotate a line around an ellipse, so that that leader is always centered with the center of the ellipse, but it actually starts at the circumfrence of the ellipse.
Like with a circle, you choose, rotation, using the center of the circle as the base point, and then setting your radius, and choosing the 'rotate' action. I need to do basically the same thing, but with an ellipse.
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Jul 26, 2012
I'm trying to dimension an ellipse in the Inventor Drawing Feature. I've attached the .idw files. (the .ipt is too large)I am aware that the ellipse doesn't have a constant radius and was wondering what is accepted practice for these dimensions?
I need to first dimension the external elliptical shape (which I'm struggling at), might just add a note.
Secondly I'm trying to dimension the mesh part, its not centrally align to the part and since I can't put a center mark on I'm not sure how I should dimension this...
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Dec 11, 2012
I'm trying to use the equation curve to draw a super ellipse.The formula I'm trying to translate for inventor is the following.I'm guessing this should be possible using the abs() for the first section and an IF() statement for the second. The problem is Iäm not even getting the abs() to work at all. How to translate this formula?
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Oct 23, 2013
How to use ellipse as boundary for detail view? I can only see rectangles and circles as my choices.
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