Linked Questions

-1
votes
1answer
270 views

how to Draw the letter geometrically by points [duplicate]

I have the given letter below. I want to draw it geometrically by using trigonometry and other formulas.Help me draw the letter OR give me the idea to draw the letter of any language using formulas. ...
48
votes
1answer
21k views

How can I draw a Homer with epicycloids? [duplicate]

You may have seen this video: https://www.youtube.com/watch?v=QVuU2YCwHjw. How does this work, and how to do it with Mathematica?
12
votes
4answers
2k views

Dynamic Epicycles

Thanks to all the thorough answers and comments, I've written the following code for an arbitrary number of epicycles. However, when I apply the formula $\gamma(t)=e^{it}+\frac{1}{2}e^{7it}+\frac{i}{3}...
10
votes
3answers
526 views

How to convert the binarize-picture to a Region

The Region of Mathematica is nice,and is the new conception of version 10.0.I can convenient get ...
5
votes
3answers
695 views

Find path through a set of Coordinates

I have a set of coordinates that I need a robot to draw, thus it must take the shortest path along these coordinates. Plotting them looks like this: ...
5
votes
4answers
527 views

How to get a smooth outline

I have a outline image img=Uncompress[FromCharacterCode[ Flatten[ImageData[Import["http://i.stack.imgur.com/cc0Mt.png"],"Byte"]]]] This is current method <...
8
votes
3answers
2k views

How do I find the intersection of a closed 3D curve given by numerical data with a specified plane?

I have a list of 3D data points which form a closed curve. My own data can't be easily generated analytically, but the qualitative behaviour is well represented by a parametric curve families such as <...
21
votes
1answer
952 views

Eigenfunctions of the Laplacian on an arbitrary mesh

So, I've constructed a mesh over which I'd like to find eigenfunctions of Laplace's equation with a free boundary (a zero Neumann boundary condition along the edge). Mostly because I figured an ...
5
votes
2answers
1k views

How to graph the contour of a resulting Manipulate curve

How can the green contour be graphed? ...
4
votes
4answers
210 views

Can I Constrain ListInterpolation by Curvature?

Using image analysis, I have found the positions of a circular ring and imported them as xx and yy coordinates. I am using ...
11
votes
1answer
362 views

How can I use Mathematica to make a captcha image?

This was inspired by this post which is about the serious business of website deployment in the Wolfram Cloud, and interaction with Google's reCaptcha system. I started thinking of how to make those ...
2
votes
2answers
336 views

Creating a custom e-seal

Well, the question is obvious: how can I create the following e-seal (with the rotated wrapped text, inserted image etc) with Mathematica? The central image is the following So, the following ...
2
votes
1answer
996 views

Convert a closed curve in an image to a parametric equation

I want to generate a parametric equation for a closed curve, which is defined in a 2d image (such as below). The equation is {x{t}, y{t}}; ...
2
votes
3answers
244 views

How to fit implicit function based on an image in mathematica?

I know how to make a plot given a function, but I don't know how to get implicit function based on an image. For example, I have the image shown below (thumbnail): Full size image import: ...
1
vote
4answers
119 views

setting size of images which are result of TextRecognize

Im learning Mathematica and the Wolfram language for shot time by myself. Its a pain for me that many settings are somehow hidden. Now I spent hours to find solution for something I already did with ...

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