CheckBoxTree - Programmatic Checking/Unchecking of Nodes

How can I programmatically check/uncheck nodes of a CheckBoxTree?

edit: spelling

[Markus Leuthold]

I understand how to check nodes

treeRoot = uitree("checkbox");
node1 = uitreenode(treeRoot, text="A - level 1");
node2 = uitreenode(treeRoot, text="B - level 1");
node3 = uitreenode(node1, text="A - level 2");

check A, which implicitly checks A level 1&2

treeRoot.CheckedNodes = node1;

check B

treeRoot.CheckedNodes = [treeRoot.CheckedNodes; node2];

How to uncheck A and its child?? Checking implicitly sets children as well, but not unchecking? Not sure if this was intended by @MathWorks Support Team

treeRoot.CheckedNodes(treeRoot.CheckedNodes == node1) = []; % does not work, because node2 is still toggled

This works, but it seems like I need to keep track of the tree myself?

treeRoot.CheckedNodes(ismember(treeRoot.CheckedNodes, [node1,node3])) = [];

Answer 1

[Randy Price]

Resolved - assign nodes of the CheckBoxTree to its "SelectedNodes" property.

[STEVEN SATTERFIELD]

It is not the "SelectedNodes" property, but rather the "CheckedNodes" property to which you must add or remove nodes. What would be helpful is an example of how to do that.

[Fabian Schnurre]

yes, please give more information about that

Answer 2

[Kris Hoffman]

I'm using app designer and came across this issue. The above answers gave me the idea to simply address them in the 'CheckedNodes' attribute of the tree.

The first entry is put into the 'CheckedNodes' list does not need to be indexed.

app.Tree.CheckedNodes = app.Tree.Children(i).Children(j)

The following code adds the 3rd child of the 5th parent entry (I know it says children twice), to the end of the entries in the 'CheckedNodes' attribute.

app.Tree.CheckedNodes(end+1) = app.Tree.Children(5).Children(3)

then checking the checked nodes:

app.Tree.CheckedNodes

The last entry is there!

You can also add all entries under a "parent" node as follows:

app.Tree.CheckedNodes(end+1) = app.Tree.Children(5).Children

Now to remove a specific entry, as far as I know, you would need to know where it is in the TreeNode array. I was able to uncheck a box by using the following code.

app.Tree.CheckedNodes(2) = '';

The entry was removed and box, unchecked!

Hope that helps!

[Fabian Schnurre]

string compare and everything that ai playground offers as an solution to find the place where the node is in the array doesn't work