Oct 2, 2014 · disc_radius = r/(len(cycle)+1) angles = np.linspace(0, 2*np.pi, len(cycle), endpoint=False)+angle_offset. mesh_x, mesh_y = mesh. xo, yo = origin. z = np.zeros_like(mesh_x) for a, d in zip(angles, cycle): xc, yc = xo + r/2*cos(a), yo + r/2*sin(a) z += d*((mesh_x-xc)**2 + (mesh_y-yc)**2 < (0.2*r)**2) z0_mask = np.where(z == 0) ring = …

Mar 31, 2020 · To plot in a circle, use a polar plot. The angles should be converted to radians. With set_theta_zero_location, the starting point can be moved (default is at the right). set_theta_direction(-1) makes the angles go around clockwise.

You should just be able to use ax.contour or ax.contourf with polar plots just as you normally would... You have a few bugs in your code, though. You convert things to radians, but then use the values in degrees when you plot. Also, you're passing in r, theta to contour when it expects theta, r. As a quick example:

contour and contourf use a marching squares algorithm to compute contour locations. More information can be found in ContourPy documentation . Examples using matplotlib.pyplot.contour #

Jun 22, 2020 · A Surface Plot is a representation of a three-dimensional dataset. It describes a functional relationship between two independent variables X and Z and a designated dependent variable Y, rather than showing the individual data points. …

Apr 21, 2020 · Contour plots are widely used to visualize density, altitudes or heights of the mountain as well as in the meteorological department. Due to such wide usage matplotlib.pyplot provides a method contour to make it easy for us to draw contour plots.

Jul 26, 2024 · Contour maps are valuable tools for visualizing the spatial data and it can be allowing the insights into patterns and gradients. PyVista simplifies the creation and customization of the contour plots, making it accessible for the scientific visualization and data analysis tasks.

Mar 17, 2025 · Contour plots are a powerful visualization tool in Python, especially when dealing with functions of two variables. They represent regions of constant values (contours) of a function (z = f (x, y)) on a two - dimensional (x - y) plane.

May 21, 2020 · How can I highlight a specific contour value in a polar plot? azi is polar azimuth degrees (with 360 values). dev is deviation degrees from horizontal (with 90 values).

Oct 16, 2024 · In this tutorial, you’ll learn how to represent 3D data in 2D using Python. We’ll explore several methods, from contour plots and heatmaps to scatter plots with color mapping and projection plots. You’ll also learn more advanced methods …