Puling values from a matrix?

Let me explain:

1) I have a table of 20 values, ranging from 0 to 1, in MATLAB.

2) I also have a matrix, with the first column being 20 values long.

Those values from the first table? The 'ones' represent the values I need to pull from the matrix's first column. I need the positions of the ones in the first table, and those positions would tell me the row number in the matrix of the values I need to pull.

How do I do this?

This is what I have so far:

check_in = input('Enter check-in date:','s');

date_cell_array = strsplit(check_in);

        month = date_cell_array{1};
        d_string = date_cell_array{2};
        y_string = date_cell_array{3};
            d = str2num(d_string)
            y = str2num(y_string);
            m = MonthToNum(month);
            table = availability(d,:);
            positions = find(table==1);

When I enter the date 'April 5 2016' as an example

'Table' gives me this:

1     1     1     0     1     0     1     1     1     1     1     1     1     1     0     1     0     1     1     1

And 'positions' gives me this:

1     2     3     5     7     8     9    10    11    12    13    14    16    18    19    20

[Azzi Abdelmalek]

Post a short example with the expected result

Answer 1

[Walter Roberson]

column_to_extract = 1;
value_to_match = 1;
mask = ismembertol(table,value_to_match);
ExtractedValues = MatrixToPullFrom(mask, column_to_extract);

The ismembertol is used to find values "sufficiently close" to the target value. You did mention you were using floating point values between 0 and 1, and floating point values should seldom be compared for exact equality.