How can I reshape the data to plot vorticity?

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tethys
tethys 2016-2-25
评论： tethys 2016-3-11
I have a data consisting of x, y coordinates, along with swirl strength value in each of these coordinates. What would be the correct way to reshape the data into matrix format so that I can use pcolor command for plotting colormap? I have the following code, but I am not really sure how to continue for the w value at these points. The data is attached. Thanks a lot!
x = data(:,1); y = data(:,2); w = data(:,3);
xu=unique(x); yu=unique(y);
x_new=(xu*ones(1,length(unique(yu)))).';
y_new=(yu*ones(1,length(unique(xu))));

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Honglei Chen
Honglei Chen 2016-2-25
From your data, you may want to do
y_new = reshape(x,numel(xu),numel(yu));
x_new = reshape(y,numel(xu),numel(yu));
pcolor(x_new,y_new,reshape(w,numel(xu),numel(yu)));

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