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Convert 190x1 cell array into scatter plot?

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Elizabeth Walter
Elizabeth Walter 2021-8-31
评论： Elizabeth Walter 2021-9-1
I have a 190x1 cell array and each cell contains {131x1}. The 190 represents the number of time points or what I want listed as my x-axis. Then each cell contains 131 data points that I want to be my y value for each x-axis value. I can figure out how to get the y values, but unable to figure out how to get the corresponding x-value. I'm sure there is a simple explanation, but i haven't been able to find it through the mathworks website!
x=??
y=cell2mat(data(:))
scatter(x,y)
Thank you so much!

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回答（1 个）

Chunru
Chunru 2021-9-1
Ran in:
% Data: 190x1 cell array and each cell contains {131x1}.
ncells = 20;
npoints = 50;
for i=1:ncells
data{i, 1} = randn(npoints, 1);
end
x=1:npoints;
y=cell2mat(data'); % assume data is ncells x 1
scatter(x,y)
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Chunru
Chunru 2021-9-1
编辑：Chunru 2021-9-1
You have to show what data you have. It looks like your cell array is 1 x ncells instead of ncells x 1. Each cell is 1x190 instead of 190 x 1. Therefore, you can plot the data:
scatter(x, y')
Elizabeth Walter
Elizabeth Walter 2021-9-1
hmm yeah I was unable to get that method to work.
However I used your "y=cell2mat(data')" part
to figure out something else
so I made
x=1:190 (or 1 x 190 array)
but made this into an repetitive array so it matched the y data which was 131 x 190
so with both matrixes 131 x 190 I turned them back into vectors to finally produce the scatter (x,y)!

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