set_sizes (rain_drops ['size']) scat. The set_offsets() method set the values of x and y. I want to start with an empty plot so I just pass an empty list. animation import FuncAnimation # Use matplotlib ggplot stylesheet if available: try: plt. indeed it works with python now, provided I uncomment the wxAgg setting in the script. Matplotlib Animations. best, Johann Eric Bruning wrote: > Strange, strange. Besides 3D wires, and planes, one of the most popular 3-dimensional graph types is 3D scatter plots. # - scatter plot with variable size, color, and shape # - filled area plot: import numpy as np: import matplotlib. set_offsets (positions. One of: # line, pcolor, scatter, contour, quiver, labels: animation_type = 'line' I hadn't noticed the marker positioning examples. This function takes in 2 variables to plot - we’ll use the first 2 columns of our xyz array: I was more interested in the text kerning at the time. To create our plot, we are going to use the plt.scatter() function (remember to check out the function help by using plt.scatter?) """ Rain simulation Simulates rain drops on a surface by animating the scale and opacity of 50 scatter points. Edit: Note that this issue is also still present with Qt5Agg and matplotlib 3.0.1 Showing a figure with Qt4Agg backend changes the figure size. mplot3d import Axes3D # Use matplotlib ggplot stylesheet if available: try: plt. use ('ggplot') except: pass # Set which type of animation will be plotted. Suppose you have a scatter plot, scat = ax.scatter(...), then you can change the positions. The hardest part is learning how to animate a simple line plot (here's my easy way). That's great to know that the Cairo-based backends can be a suitable work-around when they are available (I am open to making them the default over AGG, but that might have to wait until v3.0, and wider adoption of the newer C++ standards across compilers). The idea of 3D scatter plots is that you can compare 3 characteristics of a data set instead of two. transpose ()) anim = animation. For each region, the method does: filter the data for the current year; set the x and y values (set_offset()) style. animation import FuncAnimation: from matplotlib. Matplotlib, Python's primary scientific plotting library, provides tools to make many elaborate plots, graphs, and diagrams. pyplot as plt: from matplotlib. scat.set_offsets(array) where array is a N x 2 shaped array of x and y coordinates.. change the sizes. import matplotlib. scat.set_sizes(array) where array is a 1D array of sizes in points.. change the color 3D Scatter Plot with Python and Matplotlib. iPython is apparently having some effect here: I tried > ipython -pylab animation.py > and I got a figure with the initial plot, but nothing further > happened. import matplotlib.pyplot as plt import numpy as np fig = plt.figure() ax = fig.add_subplot(1,1,1) s = ax.scatter([0,1], [0,1], [100, 400]) s.set_offsets([[0,0], [1,-1]]) plt.show() Modify an graphical object using methods of the scatter object Coordinates specified differently Next, I define an update() method that will update the scatter plot for each frame. 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