Jan 7, 2016 · For re-interpolating regularly gridded data there are different, much more efficient algorithms. scipy.ndimage.zoom exploits the regularly gridded nature of the input. It may not be obvious for a small input grid, but for larger grids, zoom can be several orders of magnitude faster.

Mar 25, 2016 · One easy way to smooth data is using a moving average algorithm. One simple form of moving average is to calculate the average of adjacent measurements at a certain position. In a one-dimensional series of measurements a[1:N], for example, the moving average at a[n] can be calculated as a[n] = (a[n-1] + a[n] + a[n+1]) / 3, for example.

Jul 5, 2013 · Get each contour line coordinates via contour_object.collections[col_index].get_paths()[path_index].vertices and smooth / re-plot each one. This seems possible, but inelegant, and I'm not sure where to start on it.

Apr 17, 2024 · In Python, we can use the gaussian_filter function from the scipy.ndimage module to smooth the data before creating the contour plot. By adjusting the smoothing level (sigma value), we can control the amount of smoothing applied to the plot.

Chunking reduces the maximum length of polygons generated by the contouring algorithm which reduces the rendering workload passed on to the backend and also requires slightly less RAM. It can however introduce rendering artifacts at chunk boundaries depending on the backend, the antialiased flag and value of alpha .

Tricontour Smooth Delaunay# Demonstrates high-resolution tricontouring of a random set of points; a matplotlib.tri.TriAnalyzer is used to improve the plot quality. The initial data points and triangular grid for this demo are: a set of random points …

The algorithm was two steps: given the points in the Polygon, add two Bezier control points between every point; then call a simple algorithm to make a piecewise approximation of the spline. The second part is easy; the first part was a bit of art.

Apr 12, 2017 · I used the NCEP 2.5 degree*2.5 degree data to plot the 850 mb wind field and heights. But, I didn't know how to smooth the contour line. Scipy.ndimage.zoom didn't work well and some details are missed. The colorful one is what I want. The another is what I plotted.

May 6, 2016 · I extracted the contours of an image, that you can see here: However, it has some noise. How can I smooth the noise? I did a close up to make clearer what I want to meant Original image that I've u...

Jul 26, 2010 · Before beginning with Python, I used to use IDL to plot, and there is a function 'smooth' that smooth for you 2D histograms. I haven't found anything similar for Python. Does anyone have an idea or suggestion on how to do it? Thank in advance Francesco--View this message in context: http://old.nabble.com/Smooth-contourplots-tp29253884p29253884.html