MATLAB: Restricting matrix values

Question

I have a matrix:

points=

    37    29
    36    30
    37    30
    35    31
    36    31
    37    31
    36    32
    37    32
    46    58

I need to restrict the values of the points such that

26<points(:,1)<46

21<points(:,2)<41

I want to remove the entire column if the above condition is not held.

E.g: (46,58) at position 9 is outside the boundaries, so I want points(9,:)=[]

I have written a very roundabout way of doing this:

find1=find(points(:,1)<(26))

if ~isempty(find1)

    for i=1:length(find1)
        points(find1(i),:)=[];
    end

end

find2=find(points(:,1)>(46))

if ~isempty(find2)

    for i=1:length(find2)
        points(find2(i),:)=[];
    end

end

find3=find(points(:,2)<(21))

if ~isempty(find3)

    for i=1:length(find3)
        points(find3(i),:)=[];
    end

end

find4=find(points(:,2)>(41))

if ~isempty(find4)

    for i=1:length(find4)
        points(find4(i),:)=[];
    end

end

However this method breaks if for a position "pos" points(pos,1) and points(pos,2) both exceed boundaries.

Does anyone have a cleaner way of doing this?

Thank you in advance for your responses!

Answer 1

points = [37    29; ...
          36    30; ...
          37    30; ...
          35    31; ...
          36    31; ...
          37    31; ...
          36    32; ...
          37    32; ...
          46    58];
keep1  = and(26 < points(:,1), points(:,1) < 46);
keep2  = and(21 < points(:,2), points(:,2) < 41);
points = points(and(keep1, keep2), :);