how can i get the regression values into a variable in neural network

Question

Elysi Cochin 2020-12-7

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https://ww2.mathworks.cn/matlabcentral/answers/684738-how-can-i-get-the-regression-values-into-a-variable-in-neural-network

编辑： Adam Danz 2020-12-24

When we fit-data-with-a-neural-network, we can get the regression graph, when we click the Regression button in the nntool window.

is it possible to get the 4 values written on the title of the graph plot into a variable?

so i can view the variable regr as below

regr = [ 0.97327 0.96889 0.94805 0.96877]

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Answer 1

Adam Danz 2020-12-17

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https://ww2.mathworks.cn/matlabcentral/answers/684738-how-can-i-get-the-regression-values-into-a-variable-in-neural-network#answer_578330

编辑：Adam Danz 2020-12-24

在 MATLAB Online 中打开

After the figure is created from the nntool and is the current figure, these lines below will extract the subplot title information,

fig = gcf(); 
ax = findobj(fig,'Type','Axes');
titles = get(ax,'Title');
titleStr = get([titles{:}],'String');
[~, plotID] = regexp(titleStr,'^(.*):','match','tokens','once');
[~, numStrings] = regexp(titleStr,'R=(.*)$','match','tokens','once');
S = [plotID{:}]                     % the subplot ID
R = str2double([numStrings{:}])     % the R value