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Imperfect Plot

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Adi Mico
Adi Mico 2011-7-27
I have a problem for plotting so it can make a squarewaveform.
here is my code
x=0:5:5000;
a='q';
bitk = reshape(dec2bin(double(a),8).' - '0', 1, []);
stairs(handles.axes1,x(1:length(bitk)),bitk(1:length(bitk)));
xlim(handles.axes1,[0 50]);
ylim(handles.axes1,[-1 2]);
the result is the graph isn't a squarewaveform. but the plot stairs is cut at bit 8. how can I fix this problem so at bit 8 make a squarewave and the rest of plot is 0?

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回答（1 个）

Andreas Goser
Andreas Goser 2011-7-27
When I remove 'handles.axes1' from your code and execute it, I see a figure with xlimits 0:35 and ylimits 0:1. This is exactly what is represented by the data x and bitk. I do not understand "but the plot stairs is cut at bit 8".
You may look for the AXIS command?
  2 个评论
Adi Mico
Adi Mico 2011-7-27
I've already made the GUI with handles.axes1 as my axes to view the plot. What become my problem is that the plot only plot up to x=35. I want that the last bit which the plot at x=35 as a squarewaveform.
Mr.Roberson from the other question of mine has solved this so my code become
x=0:5:5000;
a='q';
bitk = reshape(dec2bin(double(a),8).' - '0', 1, []);
if bitk(end) ~= 0
bitk(end+1) = 0;
end
stairs(handles.axes1,x(1:length(bitk)),bitk(1:length(bitk)));
xlim(handles.axes1,[0 50]);
ylim(handles.axes1,[-1 2]);
But, I want the rest of plot is 0 so it can show like a scope that view the squarewave.
Andreas Goser
Andreas Goser 2011-7-27
In this case, I do not see alternatives to modify the data. PLOT, STAIRS etc. just display the data they have.

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