How to plot Large Dataset

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vedesh Mohit 2018-2-6

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https://ww2.mathworks.cn/matlabcentral/answers/380960-how-to-plot-large-dataset

编辑： per isakson 2018-2-6

Dataset.txt

Hello, I am trying to plot this large dataset in Matlab. I am suppose to plot the all the points for my research project by incoperating 24 hour speeds for each day for a fifteen year period. I am new to Matlab and I'm not quite sure how to go about doing this.

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Bob Thompson 2018-2-6

编辑：Bob Thompson 2018-2-6

You can use commands like textread() or textscan() to read data from a text file. I believe both of those can also read multiple files at once. These will bring the data into an array where you can analyze and organize it as you desire.

per isakson 2018-2-6

编辑：per isakson 2018-2-6

在 MATLAB Online 中打开

Try

str = fileread( 'dataset.txt' );
str = strrep( str, '''', '"' ); 
fmt = [repmat('%f',1,24),'%q'];
cac = textscan( str, fmt, 'Headerlines',2, 'CollectOutput',true );
%
figure, imagesc( permute( cac{1}, [2,1] ) ) % displays hourly values
ws = cac{1};
dv = mean( ws, 2 );
figure, plot( dv, '.' ) % displays daily values