MATLAB: Plot two spectrum plot in one spectrum plot

figureMATLABplotting

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.

Best Answer

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);

Related Solutions

MATLAB: Combine two MATLAB figures with two y axes

Try this code

fig1 = openfig('plot_1.fig');
fig2 = openfig('plot_2.fig');
ax1 = findobj(fig1, 'type', 'axes');
yyaxis(ax1, 'left');
line1L = ax1.Children;
yyaxis(ax1, 'right');
line1R = ax1.Children;
ax2 = findobj(fig2, 'type', 'axes');
yyaxis(ax2, 'left');
line2L = ax2.Children;
yyaxis(ax2, 'right');
line2R = ax2.Children;
%%
fig = figure;
ax = axes();
LineL = copyobj([line1L line2L], ax);
yyaxis(ax, 'right');
LineR = copyobj([line1R line2R], ax);

To change the ylimits you can do something like this

yyaxis(ax, 'left');
ax.YLim = [0 2]; % change Ylimits of left axes
yyaxis(ax, 'right');
ax.YLim = [0 2]; % change Ylimits of right axes

MATLAB: I have five figure in .Fig extension which i am creating after plotting 5 rows from a dataset. Now i want to Join these 5 figure into one figure in vertical allignemnt

for each .fig, use openfig() to open the figure and return a handle to it. For each of those handles, h(K)

h_line = findobj(h(K), 'type', 'line');
line_ax = ancestor(h_line, 'axes');
title_obj = get(line_ax, 'title');
titles{K} = get(title_obj, 'string');
xlab{K} = get(line_ax, 'xlabel');
ylab{K} = get(line_ax, 'ylabel');
xdata{K} = get(h_line, 'xdata');
ydata{K} = get(h_line, 'ydata');

Once you have all of those, you can create a new figure and

for K = 1 : 5
  ax = subplot(5,1,K);
  plot(xdata{K}, ydata{K});
  title(titles{K});
  xlabel(xlab{K});
  ylabel(ylab{K});
end

You can extend this if you need the tick marks to be specifically copied instead of automatically generated, or need special font, and so on.

Best Answer

Related Solutions

MATLAB: Combine two MATLAB figures with two y axes

MATLAB: I have five figure in .Fig extension which i am creating after plotting 5 rows from a dataset. Now i want to Join these 5 figure into one figure in vertical allignemnt

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