interpolation of data 2 vectors

2012 5 15
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hi i have trouble interpolate
Y=1945 1946 1947 1948 1949 1950 1951 1952 1953
L=6937 6976 6987 7015 9999 9999 6921 6958 6936
how I can interpolate these values of the year 1949 and 1950? and replace it in the L values. I know is a "for" but i dont know how implement it

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Walter Roberson
Walter Roberson 2012-5-15

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Remove the points with bad data . interp1() the points back in
interp1(Y2, L2, [1949 1950])

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David Lopez
David Lopez 2012-5-15
thanks but how is the sintaxis for bad data?
Walter Roberson
Walter Roberson 2012-5-15
is_bad = (L == 9999);
Lfixed = L;
Lfixed(is_bad) = interp1( Y(~is_bad), L(~is_bad), Y(is_bad) );

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