问MatLab -自动绘制不同大小的文本文件段

EN

Data = load(filename, '-ascii');

% Here I generate some random points to test the code
NPoints                     = 100;

Data                        = rand(NPoints,2);
% Insert NaNs in both columns
Data( Data(:,1)>0.9, : )    = NaN;

% Now do some magic
idxNaN                          = find( isnan( Data(:,1) ) );
idxNearNaNs                     = [ idxNaN-1 idxNaN+1 ]';
SegmentStartEnd                 = reshape( [1;idxNearNaNs(:);NPoints] , 2, [] )';
SegmentsOK                      = ( SegmentStartEnd(:,2) - SegmentStartEnd(:,1) ) >= 0;
SegmentStartEnd( ~SegmentsOK,:) = [];

% SegmentStartEnd contain start and end rows of good segments
NumberOfSegments = size(SegmentStartEnd,1);
fprintf('NaNs positions: %s\n', sprintf('%g ',idxNaN));
fprintf('%d segments found\n', NumberOfSegments);

% Now plot the data
figure;
hold all;
for k=1:NumberOfSegments
    SegmentStart    = SegmentStartEnd(k,1);
    SegmentEnd      = SegmentStartEnd(k,2);
    fprintf('Segment #%04d: Rows %04d to %04d\n', k, SegmentStart,SegmentEnd);
    plot( Data(SegmentStart:SegmentEnd,1) , Data(SegmentStart:SegmentEnd,2) );
end