Removing values from plot and applying curve

Question

Joel Schelander 2021-4-28

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/815535-removing-values-from-plot-and-applying-curve

编辑： Benjamin Großmann 2021-4-29

采纳的回答： Benjamin Großmann

op.PNG

I want to remove the values situated on y=0 and x=0. How can I do this?

Is there a way to translate this into a curve somehow?

D:34213580x1 double
I3:34213580x1 double
figure
plot(I3,D,'.')

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Answer 1

Benjamin Großmann 2021-4-28

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/815535-removing-values-from-plot-and-applying-curve#answer_686885

编辑：Benjamin Großmann 2021-4-29

You can remove values from an array by setting them to empty. Use logical indexing to address the values that you want to delete.

D_IdxToDelete = D == 0;    % or "D_IdxToDelete = D <= DLIM;" if you do not have exact zeros and want to specify margins
I3_IdxToDelete = I3 == 0;  % or "I3_IdxToDelete = I3 <= I3LIM;" if you do not have exact zeros and want to specify margins
% Use "&" (and) or | (or) to combine different logical index arrays
% Idx to delete when D OR I3 is zero. 
IdxToDelete = D_IdxToDelete | I3_IdxToDelete;
% delete the entries
D(IdxToDelete) = [];
I3(IdxToDelete) = [];