problem with Boolinger Band

>> Data=1:500;
>> bollinger(Data)
Error using bollinger
Expected Window size to be a scalar with value <= 1.

Answer 1

[Voss]

Note the documentation of bollinger input argument Data:

Data for market prices, specified as a matrix, table, or timetable. For matrix input, Data must be column-oriented.

This means that bollinger is expecting one or more columns of data. You've given a row vector, so transpose (.') it:

Data=1:500;
[middle,upper,lower] = bollinger(Data.');

plot(Data)
hold on
plot(middle,'--')
plot(upper,'--')
plot(lower,'--')

Reference: https://www.mathworks.com/help/finance/bollinger.html#d126e142895