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Questions tagged [drawellipse]

51 questions
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.NET Graphics.FillEllipse()

So the .NET documentation says that this creates a filled ellipse with the UPPER LEFT CORNER at the X,Y coordinate specified. But I need the ellipse to be CENTERED on the X,Y coordinate I supplied. How do I do this? Thanks!
stingray-11
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Change the height level contained in the ellipse

I draw the ellipse with the code as shown below. How can I make the height of the red color is inside the ellipse can be changed for example from 0% -100%. If 0% the meanings the level of red height is empty. If 50% the meanings height level of the…
yd4
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Plotting the elliptical distribution of eigenvalues for correlated random matrices

I am currently working on a problem that has to do with the generalized version of circular law called ellipse law. Basically, it means that for a N*N Random Matrix M with elements A_{ij} taken from a gaussian distribution N(0,1) with a correlation…
Uran Kopf
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Segment the pupil

Everyone. Now I have some issue to detect the pupil with only opencv_python. Second is the sample image. Thank you enter image description here enter image description here I want the solution or the correct code.
Augustin Harter
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Calculate SVG path arc parameters

How exactly can one calculate all required parameters for SVG path arc? Is there a source with a set of formulas somewhere available? A compendium without all the geometry background and without lengthly explanations? I have been fiddeling with an…
jamacoe
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How do draw.ellipsoid and ellipse_stats from sckimage.draw.ellipse work with grid spacing?

I am looking into the https://scikit-image.org/docs/dev/api/skimage.draw.html#skimage.draw.ellipse and skimage.draw.ellipsoid_stats(a, b, c) which claims, I quote Calculates analytical surface area and volume for ellipsoid with semimajor axes…
RMS
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Circle drawing problems (JFreeChart )

Please help me to solve 2 problems with drawing a circle: 1) I want to make a perfect circle. Width == Height but it still draws an ellipse: If you try to rotate this image you'll see what i mean: How can i get a perfect circle? 2) Image size:…
cupuyc
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PDFsharp DrawRoundedRectangle parameters

I would like to use the PDFsharp method DrawRoundedRectangle( XPen pen, double x, double y, double width, double height, double ellipseWidth, double ellipseHeight ) for the definition of a clipping path. It works - but I…
user3440145
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DrawEllipse: Antialiasing broken with PenAlignment.Inset

As suggested by @TaW on this previous question, I setted PenAlignment.Inset to draw the circle inside the Bitmap, but this caused another problem. I want to draw a circle on a specified Bitmap with antialiasing. SmoothingMode.AntiAlias The…
devpelux
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DrawEllipse: Ellipse goes outside of the Bitmap size

I want to draw a circle with DrawEllipse on a specified Bitmap, with the same size of the Bitmap, but the result is that the circle appears clipped at the edges. Why this problem? Bitmap layer = new Bitmap(80, 80); using (Graphics g =…
devpelux
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Graphing a tidal Ellipse in R

I am trying to draw a tidal ellipse in R (using Eastern and Western wind components). I have run my code in R and I don't think it contains any errors. Does anyone have experience with graphing tidal ellipses in R? Any help would be greatly…
Truce Jack
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R: Change axis label in plot.Mclust AND/OR plot uncertainty of mclust model with ggplot2

I am really confused. I would like to change the axis labels of a plot (classification or uncertainty) for a 'Mclust' model object in R and I don't understand why it's working for a simple object with just two variables, but not several ones. Here…
user5514978
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"Cannot resolve symbol 'Ellipse2D' "

I've just found the class Ellipse2D.double . It's the perfect class for me to check if a circle collidates with an rectangle (class.rect). My problem is that I cannot integrate it in my Java/Android Project. If i want to declare an Object which…
Malte Sli
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Simultaneous Ellipse Scan Conversion

Problem: Given two points (lying on an ellipse) (x1,y1) and (x2,y2) in the first quadrant. Scan convert the ellipse/elliptical arc from both ends simultaneously/point plotting should begin from both the ends at the same time. My solution so far: I…
Ramit Sawhney
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I've created a ellipse in c#...bt i want to move ellipse around the canvas using mouse.....can anyone help? And i'm new to c#

I've created a ellipse in c#, but I want to move the ellipse around the canvas using the mouse. Can anyone help? I'm new to c#. Here's my code. private Ellipse drawEllipse(Canvas aCanvas) { Ellipse newEllipse = new Ellipse(); …
Vivek Bhat
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