Plot two spectrum plot in one spectrum plot?

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Muhammad Rizwan
Muhammad Rizwan 2020-5-4
评论： Ameer Hamza 2020-5-13
Hi ,
I have a question regarding plotting of two spectrum plots into one spectrum but resultant plot must be appended after the first plot.
I have saved spectrum as a figure.
I have read many threads all of them are supporimposing or making sub plots.
My query is that how to join one figure plot line with second figure plot line.
I have attached as a reference two figures.
Both figures have same x axis label(0-400) but I want resultant plot must have consistant values like 0 - 800.

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Ameer Hamza
Ameer Hamza 2020-5-4
编辑：Ameer Hamza 2020-5-4
Try this, using the two fig files you shared.
fig1 = openfig('Ichannel0_400_1.fig');
fig2 = openfig('Ichannel_400_1_800.fig');
ax1 = findobj(fig1, 'type', 'axes');
ax2 = findobj(fig2, 'type', 'axes');
l1 = findobj(fig1, 'type', 'line');
l2 = findobj(fig2, 'type', 'line');
l1.XData = [l1.XData l2.XData+l1.XData(end)];
l1.YData = [l1.YData l2.YData];
ax1.XLim = [min(l1.XData) max(l1.XData)];
figure(fig1);
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Muhammad Rizwan
Muhammad Rizwan 2020-5-13
Yes Ameer Y axis value must be zero for 0 Hz. Means all value must be divided by max gain(i.e. st 0 hz).
Ameer Hamza
Ameer Hamza 2020-5-13
If you divide by max value than the gain will be 1 at 0Hz. I think you can just subtract the value of the signal at 0Hz.

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