python - mayavi mlab.savefig() gives an empty image -


i trying learn mayavi2 python , can not savefig show plots. found example code:

from numpy import pi, sin, cos, mgrid  dphi, dtheta = pi/250.0, pi/250.0 [phi,theta] = mgrid[0:pi+dphi*1.5:dphi,0:2*pi+dtheta*1.5:dtheta] m0 = 4; m1 = 3; m2 = 2; m3 = 3; m4 = 6; m5 = 2; m6 = 6; m7 = 4; r = sin(m0*phi)**m1 + cos(m2*phi)**m3 + sin(m4*theta)**m5 + cos(m6*theta)**m7 x = r*sin(phi)*cos(theta) y = r*cos(phi) z = r*sin(phi)*sin(theta)  # view it. mayavi import mlab a= mlab.mesh(x, y, z) mlab.show()

now want save figure, add:

mlab.savefig(filename='test.png')

this saves gray image test.png. must actual image save?

this same issue results using matplotlib, the best option save before show.


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