> Is there any way to remove just the ones with <1% or somehow group the labels together?
Starting in MATLAB R2024b, piechart offers the NumDisplayWedges property that lets you set the number of wedges and puts the remaining date into an "other" category. When used with the DisplayOrder property, you can show all data that is greater than 1%.
data = [linspace(0,1,20),linspace(.5,2,10),linspace(1,10,20)];
h = piechart(data,'DisplayOrder','descend','LabelStyle','percent');
h.NumDisplayWedges = sum(h.Data>1)-1; % show all data >1%
Using the older pie function
Use the pie() output handle to obtain the text objects.
h = pie(. . .);
th = findobj(h,'Type','Text'); % text handles
Determine which text strings begin with "<"
isSmall = startsWith({th.String}, '<'); % r2016b or later
% isSmall = ~cellfun(@isempty, regexp({th.String},'^<')); % any matlab release
Either delete the text objects or replace their String values with empties.
delete(th(isSmall));
%or
set(th(isSmall),'String', '')
Demo:
% h = pie(sort(data));
