Hello I am relatively new to Spyder and IPython in general. I am trying to understand how the 2D/3D plotting system works in Spyder's interactive mode. I am new to the forum and I hope I havent broken any rules in the way I am posting.
I installed Spyder 2.1.13 from an Anaconda 1.4.0 install on Win7 64. Python 2.7.3, NumPy 1.7.0 SciPy 0.11.0 Matplotlib 1.2.1. Spyder seems defaultly come up with a interactive console (that isn't the IPython specific one as far as I can tell). It is within this console that I am trying to do 3D mathplotlib plotting, and am having trouble. So far I have not had any problems with the 2D examples from the Mathplotlib site. I know that the interactive console specifies: > import numpy as np > import scipy as sp > import matplotlib as mpl > import matplotlib.pyplot as plt > from pylab import * > ion() at start up. So the example: > import pylab as pl > import numpy as np > X = np.linspace(-np.pi, np.pi, 256, endpoint=True) > C, S = np.cos(X), np.sin(X) > pl.plot(X, C) > pl.plot(X, S) > pl.show() Translates to being entered in the interactive console as: > X = np.linspace(-np.pi, np.pi, 256, endpoint=True) > C, S = np.cos(X), np.sin(X) > plot(X, C) > plot(X, S) The show() call does not seem to be necessary, and I see the plot as expected. The issue i have is with the 3D example: > import numpy as np > from mpl_toolkits.mplot3d import Axes3D > fig = pl.figure() > ax = Axes3D(fig) > X = np.arange(-4, 4, 0.25) > Y = np.arange(-4, 4, 0.25) > X, Y = np.meshgrid(X, Y) > R = np.sqrt(X ** 2 + Y ** 2) > Z = np.sin(R) > ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=pl.cm.hot) > ax.contourf(X, Y, Z, zdir='z', offset=-2, cmap=pl.cm.hot) > ax.set_zlim(-2, 2) > pl.show() Which I translate to: > from mpl_toolkits.mplot3d import Axes3D > fig = figure() > ax = Axes3D(fig) > X = np.arange(-4, 4, 0.25) > Y = np.arange(-4, 4, 0.25) > X, Y = np.meshgrid(X, Y) > R = np.sqrt(X ** 2 + Y ** 2) > Z = np.sin(R) > ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.hot) > ax.contourf(X, Y, Z, zdir='z', offset=-2, cmap=cm.hot) > ax.set_zlim(-2, 2) When entering that into the interactive console. A figure window pops up but it is empty. There doesn't seem to be any errors. and the console displays this: > [<matplotlib.lines.Line2D object at 0x0000000007C75FD0>] > >>> from mpl_toolkits.mplot3d import Axes3D > >>> > >>> fig = figure() > >>> ax = Axes3D(fig) > >>> X = np.arange(-4, 4, 0.25) > >>> Y = np.arange(-4, 4, 0.25) > >>> X, Y = np.meshgrid(X, Y) > >>> R = np.sqrt(X ** 2 + Y ** 2) > >>> Z = np.sin(R) > >>> > >>> ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.hot) > <mpl_toolkits.mplot3d.art3d.Poly3DCollection object at 0x000000000800DC50> > >>> ax.contourf(X, Y, Z, zdir='z', offset=-2, cmap=cm.hot) > <matplotlib.contour.QuadContourSet instance at 0x000000000275CB08> > >>> ax.set_zlim(-2, 2) > (-2, 2) > >>> When just running a .py file (with the original 3D example code) through python in the windows console. I see the correct plot. So I know it works, just trying to figure out how to do this in the Spyder interactive console. Am I thinking about interactive mode in the wrong way? Should this work, or can it be modified to work? Are there instances where show() is necessary? Any help would be appreciated. -Ryan -- You received this message because you are subscribed to the Google Groups "spyder" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/spyderlib. For more options, visit https://groups.google.com/groups/opt_out.
