Delete fields of struct based on starting characters

Question

Timon Rayis 2020-2-26

评论： Timon Rayis 2020-2-26

Hello everyone. I have a struct called temp which has 5 fields

I want to delete all the fields starting with 'fig' and 'ax'. The final output struct should look something like

I know that we can do it in a complex way using fieldnames and rmfield with multiple lines of code.

Is there any simple way to do this? Thanks in advance.

Answer 1

Guillaume 2020-2-26

编辑：Guillaume 2020-2-26

You do have to use fieldnames and rmfield indeed. It's only two lines and not complicated at all:

fns = fieldnames(temp);
temp = rmfield(temp, fns(startsWith(fns, {'fig', 'ax'})))

edit: However, note that if you're trying to remove all the graphics objects from your structure a more reliable method would be:

fns = fieldnames(temp);
temp = rmfield(temp, fns(cellfun(@(fn) ishghandle(temp.(fn)), fns)));

Image Analyst 2020-2-26

If you need more help, attach temp in a .mat file using the paper clip icon, so we can work with it

save('answers.mat', 'temp'); % Save temp to a file on disk.

Timon Rayis 2020-2-26

Thank you so much.