Hi I am new to use obspy.
I want to plot two streams to one plot.
I made code as below.
st1=read('/path/1.SAC')
st1+=read('/path/2.SAC')
st1.plot()
I succeed to plot two plots but what I want to do is plotting them as two colors.
When I put the option of 'color', then both colors are changed.
How can I set colors seperately?
1 Answer
Currently it is not possible to change the color of individual waveforms, and changing color will change all waveforms as you mentioned. I suggest you make your own graph from the ObsPy Stream using Matplotlib:
from obspy import read
import matplotlib.dates as mdates
import matplotlib.pyplot as plt
st1=read('/path/1.SAC')
st1+=read('/path/2.SAC')
# Start figure
fig, ax = plt.subplots(nrows=2, sharex='col')
ax[0].plot(st1[0].times("matplotlib"), st1[0].data, color='red')
ax[1].plot(st1[1].times("matplotlib"), st1[1].data, color='blue')
# Format xaxis
xfmt_day = mdates.DateFormatter('%H:%M')
ax[0].xaxis.set_major_formatter(xfmt_day)
ax[0].xaxis.set_major_locator(mdates.MinuteLocator(interval=1))
plt.show()
