How can I modulate the length of the yaxis of a matplotlib plot, as in the following figure:
In addition, how can I modulate the thickness of the yaxis?
I just found the answer. One need to use ax.spines['left'].set_bounds(4, -4).
Related
I'm creating a colour map which has 64 horizontal data points and 3072 vertical. When I plot it, the scaling on both axes is the same and so the horizontal axis is super squished and tiny, and I can't get any information from it. I've tried changing the figsize parameter but nothing changes the actual plot, only the image that contains it. Any ideas on how to change my plot so that the actual length of the axes are the same? Below is my plotting code:
def plot_plot(self, data, title="Pixel Plot"):
pixel_plot = plt.imshow(data)
plt.title(title)
plt.colorbar(pixel_plot)
plt.show(pixel_plot)
thanks in advance!
I think you want the aspect option in plt.imshow().
So something like plt.imshow(data, aspect=0.1) or plt.imshow(data, aspect='equal')
See this solution: https://stackoverflow.com/a/13390798/12133280
There is a similar question here, however I fail to adapt the provided solutions to my case.
I want to have a jointplot with kind=hex while removing the marginal plot of the x-axis as it contains no information. In the linked question the suggestion is to use JointGrid directly, however Seaborn then seems to to be unable to draw the hexbin plot.
joint_kws = dict(gridsize=70)
g = sns.jointplot(data=all_data, x="Minute of Hour", y="Frequency", kind="hex", joint_kws=joint_kws)
plt.ylim([49.9, 50.1])
plt.xlim([0, 60])
g.ax_joint.axvline(x=30,ymin=49, ymax=51)
plt.show()
plt.close()
How to remove the margin plot over the x-axis?
Why is the vertical line not drawn?
Also is there a way to exchange the right margin to a plot which more clearly resembles the density?
edit: Here is a sample of the dataset (33kB). Read it with pd.read_pickle("./data.pickle")
I've been fiddling with an analog problem (using a scatterplot instead of the hexbin). In the end, the solution to your first point is awkwardly simple. Just add this line :
g.ax_marg_x.remove()
Regarding your second point, I've no clue as to why no line is plotted. But a workaround seems to be to use vlines instead :
g.ax_joint.vlines(x=30, ymin=49, ymax=51)
Concerning your last point, I'm afraid I haven't understood it. If you mean increasing/reducing the margin between the subplots, you can use the space argument stated in the doc.
I am working on a project and we decided to use matplotlib.
For a polar chart we have a bunch of colored vectors which need to be recognizable from each other.
Now I have been able to get this:
Quiver add is simply:
Q.append(sub.quiver(0,y_min_max[0], real_coords[i], imag_coords[i], color=color, scale=y_min_max[1]*2, zorder=5)
But is it possible to have dashed colored vectors?
The closest answer I found is this one Plotting dashed 2D vectors with matplotlib?
Which is close but I've only managed to get colored vectors surrounded with dashed lines instead of dashed vectors
Q.append(sub.quiver(0,y_min_max[0], real_coords[i], imag_coords[i], color=color, scale=y_min_max[1]*2, zorder=5, linewidth=0.5, linestyle = '--'))
I've been experimenting with various combinations but no luck for now, any ideas?
Thanks in advance
Normally when you plot a list of points and axis. Only a part of point will be shown for those intersecting with the axis line, see the first point in this png for an example. How to make sure the whole point circle in shown above the axis line?
You can turn off the clipping by using the parameter clip_on of the plotting functions:
plt.plot(range(10), marker='o', ms=20, clip_on=False)
You can turn off clipping for the resulting plot artist(s) by setting clip_on=False in your call to plot or scatter. Note that you can also modify the clipping box by hand if you have a reference to the artist.
import matplotlib.pyplot as plt
plt.plot([0,1,2], [0,1,2], 'bo', clip_on=False)
produces:
I am trying to draw something similar:
The main idea is to draw ellipses with different color in some specific range, for example from [-6, 6].
I have understood that plt.contour function can be used. But I do not understand how to generate lines.
I personally wouldn't do this with contour as you then need to add information about the elevation which I don't think you want?
matplotlib has Ellipse which is a subclass of Artist. The following example adds a single ellipse to a plot.
import matplotlib as mpl
ellipse = mpl.patches.Ellipse(xy=(0, 0), width=2.0, height=1.0)
fig, ax = plt.subplots()
fig.gca().add_artist(ellipse)
ax.set_aspect('equal')
ax.set_xlim(-2, 2)
ax.set_ylim(-2, 2)
You then need to research how to get the effect you are looking for, I would have a read of the docs in general making things transparent is done through alpha.