How to zoom correctly a mandelbrot?

0
votes

I'm trying to zoom into my mandelbrot and I read this question: How to perform Simple Zoom into Mandelbrot Set but I have difficult to understand it and it doesn't work. When I calculate the new real and complex number like so:

double Re_factor = (MaxRe-MinRe)/(ImageWidth-1);
double Im_factor = (MaxIm-MinIm)/(ImageHeight-1);

double newMinRe = MinRe + (Re_factor* x1);
double newMaxRe = MinRe + (Re_factor* x2);
double newMinIm = MinIm + (Im_factor* y1);
double newMaxIm = MinIm + (Im_factor* y2);

the new mandelbrot is a bit distorted in both axis? What is wrong? Here is an example: http://www.phpdevpad.de/index.php?id=190.

1
phpmandelbrot
That interface just breaks when I try to interact with it. Could you please post a page with just the Mandelbrot Set? - Asad Saeeduddin
When you hit immediately submit does it work? The change the bounding box and click "zoom in". It works for me with Opera? - Micromega
Is it possible that it appears distorted because of the viewable region you are displaying it in? I would think the y axis would be taller. - ethrbunny
I don't have any idea. I use exactly the given formula?! Can you explain what you mean? - Micromega
@ethrbunny: You are right. It's because aspect ratio is 16:10. Make an answer i accept you. - Micromega

1 Answers

0
votes

The display area is distorted (y axis is not large enough). Your equations are fine.