save CART as fig without displaying

I have created a decision tree for classification using fitctree, tree=fitctree(...). I can visualise it using the command view(tree,'Mode','Graph'). I can then use the option "Save as" from the File menu to save the tree as a .fig file. However, I would like to save the tree as .fig directly without the visualisation step. I have tried: tree=fitctree(...); h = view(tree); saveas(h,'filename','fig'); but it doesn't work. I get the error: Error using ClassificationTree/view Too many output arguments. Any ideas how to save a CART tree as .fig, but without displaying it? I would like to be able to do this from the command window, so using the "Save as" from the file menu is not an option.

Answer 1

[Nachiket Katakkar]

Although the handle is not readily available as an output of "view", you can obtain the figure handle using the "findall" command. You can then save as a FIG file using the "saveas" command. Here is an example:

% Load data and make a table
load carsmall
tbl = table(Weight,Cylinders,MPG,Origin);

% Fit Classification Tree
tree = fitctree(tbl,'Origin');

% Call the view function
view(tree,'mode','graph');

% Obtain the handle
h = findall(0,'type','figure','Name','Classification tree viewer');

% Save file
saveas(h,'classTree.fig');

This method would still display the tree, but you would be able to save it from the Command Window.

[Susana]

Thanks a lot! It works.