Select specific data from nested struct ?

Hi, I have the following structure: data

I need to select those where data.name = t1 and t6

and this case too :

I need to select those where data.name = t1 and t6 and data.type= 'aac'

Glad for any help

     data(1:6) = struct('name', '', 'type', '', 'value', zeros(1,1)); 
    data(1).name= 't1'; data(1).type= 'aac';data(1).value=0.569;
    data(2).name= 't2'; data(2).type= 'rta';data(2).value=0.657;
    data(3).name= 't1'; data(3).type= 'vb';data(3).value=0.98;
    data(4).name= 't6'; data(4).type= 'aac';data(4).value=0.451;
    data(5).name= 't2'; data(5).type= 'ed';data(5).value=0.354;
    data(6).name= 't1'; data(6).type= 'aab';data(6).value=0.846;

Answer 1

[Walter Roberson]

mask = ismember({data.name}, {'t1', 't6'});
selected_data = data(mask);

[azdoud youssef]

I forget to mention this and data.type= 'aac'

[azdoud youssef]

does this is better for the 2d case

 mask = ismember({data.name}, {'t1', 't6'});
 selected_data = data(mask);
 mask = ismember({selected_data.type}, {'aac'});
 selected_data2 = selected_data(mask);

[Walter Roberson]

You can combine:

mask = ismember({data.name}, {'t1', 't6'}) & ismember({data.type}, {'aac'});
selected_data = data(mask);

[azdoud youssef]

thank you

[azdoud youssef]

I tried with float value, however, I got errors

 mask = ismember({data.value}, {0.98});
 selected_data2 = data(mask);

Error using cell/ismember

Input A of class cell and input B of class cell must be cell arrays of strings, unless one is a string.

[Walter Roberson]

mask = ismembertol([data.value], [0.98]);

Notice the switch to ismembertol(). ismember() is for exact (bit-for-bit) comparisons, but calculated values are seldom bit-for-bit identical to floating point constants because of round-off error. http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F . ismembertol() is a convenient way to test "close too".

You should also be considering a range test:

temp = [data.value];
mask = (temp = 0.97) & (temp < 0.99);