MATLAB: How to count specific numbers in a matrix

I have a matrix like:

100 98 09 88 200

202 23 88 00 76

23 1 23 34 198

I want to count the number of matrix elements which are larger than 100. How to writing the code? Thanks!!

sum(X(:)>100);

x = 1 : length(psdn);
x128 = linspace(x(1), x(end), 128);
p128 = spline(x, psdn, x128);
plot(x128, p128);

With the data in d, you could try

image(reshape(uint8(d),[],35));colormap(gray(256))

but the result is not recognizable.

Maybe the data was extracted by a zig-zag scan ?