Hi,
I have a 2d array like:
[[64, 13], [66, 22], [68, 9], [70, 11], [72, 8], [74, 10], [76, 11],
[78, 8], [80, 9], [82, 9], [84, 15], [86, 13], [88, 5], [90, 9], [92,
13], [94, 12], [96, 7]]
I'd like to plot a line/graph that goes through all those coordinates
specified in the array.
What I do:
for point in array:
plot(point[0], point[1], 'bo-')
This draws the dots on the graph as desired - but it does not draw the
line between them.
Is the data format wrong?
thanks
To plot a line using pyplot.plot you need an array/list of x coordinates and an array/list of y coordinates.
So if you have:
data = [[64, 13], [66, 22], [68, 9], [70, 11], [72, 8], [74, 10], [76, 11],
[78, 8], [80, 9], [82, 9], [84, 15], [86, 13], [88, 5], [90, 9], [92, 13],
[94, 12], [96, 7]]
You can get a list of xs and a list of ys with:
xs, ys = zip(*data)
From that point, it is as simple as doing:
import matplotlib.pyplot as plt
plt.plot(xs, ys)
Hope that helps,
Phil
On 16 October 2012 09:39, rand0m@…4228… <rand0m@…4228…> wrote:
[[64, 13], [66, 22], [68, 9], [70, 11], [72, 8], [74, 10], [76, 11],
[78, 8], [80, 9], [82, 9], [84, 15], [86, 13], [88, 5], [90, 9], [92,
13], [94, 12], [96, 7]]