Delete entire rows in struct array matlab depending on field entry -

i have 1x1008 struct array eeg.event fields

latency duration channel bvtime bvmknum type code urevent 

i want delete rows entry in field eeg.event.type = 'boundary' or 'r 1'

i tried following loop:

for b = 1:length(eeg.event)         if strcmp(eeg.event(b).type, 'boundary')         eeg.event(b) = [];      elseif strcmp(eeg.event(b).type, 'r  1')         eeg.event(b) = [];      end  end 

this not work of course, since counting variable b @ point exceeds length of eeg.event.

does have idea how delete particular rows?

the fundamental issue having modifying same array of structs trying loop through. bad idea , lead issue seeing.

the easiest way convert event.type fields of structs cell array, , use strcmp on of them simultaneously construct logical matrix can use index eeg.event entries care about.

you can put of type values in cell array this

types = {eeg.event.type}; 

then create logical array looking event types of 'boundary'

isboundary = strcmp(types, 'boundary'); 

and subset of eeg.event entries this.

boundaryevents = eeg.event(isboundary); 

if want subset of events type isn't 'boundary' or 'r 1', can subset way.

isboundary = strcmp(types, 'boundary'); isr1 = strcmp(types, 'r  1');  % keep entries aren't boundary or r1 types events_to_use = eeg.event(~(isboundary | isr1));