from scitools.std import *

x = seq(0, 15, 0.2)
y = sin(x)*x

plot(x, y)

# wait 3 seconds before we update the plot on the screen
# (enabled by the sleep(3) command)
from time import sleep
sleep(3)
pic('plot11.ps')

# specify a blue line:
plot(x, y, 'b-')
sleep(3)
pic('plot12.ps')

# specify a red line with circles at each coordinate point in x and y:
plot(x, y, 'r-o')
sleep(3)
pic('plot13.ps')

# specify a red circles at the coordinates only:
plot(x, y, 'ro')
sleep(3)
pic('plot14.ps')


# add legend, title, axis ranges, and axis labels:
plot(x, y, 'b-')
legend('sin(x)*x')
title('plot demo 1')
axis(0, 15, -20, 20)
show()
sleep(3)
pic('plot15.ps')

xlabel('x values')
ylabel('y values')
show()
sleep(3)
pic('plot16.ps')

# alternative syntax:
plot(x, y, 'b-', legend='x*sin(x)', title='plot demo 2',
     axis=(0, 15, -25, 25), xlabel='X', ylabel='Y')

hardcopy('tmp1.ps')