Try ismembertol(). Something like (untested)
Lia = ismembertol(P, 9, 0.0001);
P(Lia) = NaN;
Lia = ismembertol(P, 9.9, 0.0001);
P(Lia) = NaN;
Lia = ismembertol(P, 9.99, 0.0001);
P(Lia) = NaN;
Hopefully there is just a limited number of cases, like 10 or so. If you really might have dozens of possibilities then you should create a list somehow, like perhaps a for loop with sprintf() and str2double
for k1 = 1 : 10
str = repmat('9', [1, k1])
for k = 1 : length(str)
str2 = [str(1:k), '.', str(k+1:end)]
num = str2double(str2)
end
end
