Bollinger Chart
The bolling
function in Financial Toolbox™ software produces a Bollinger band chart using all the closing prices in an IBM® stock price matrix. A Bollinger band chart plots actual data along with three other bands of data. The upper band is two standard deviations above a moving average; the lower band is two standard deviations below that moving average; and the middle band is the moving average itself. This example uses a 15-day moving average. First, load the data using the ibm.dat data file and then execute the bolling
function to plot the Bollinger bands.
load ibm.dat;
[ro, co] = size(ibm);
bolling(ibm(:,4), 15, 0);
Warning: BOLLING will be removed in a future release. Use BOLLINGER instead.
axis([0 ro min(ibm(:,4)) max(ibm(:,4))]); ylabel('Price ($)'); title(['International Business Machines']); dateaxis('x', 6,'31-Dec-1994')
Specify the axes, labels, and titles. Use dateaxis
to add the x-axis dates.
For help using MATLAB® plotting functions, see Create 2-D Line Plot in the MATLAB documentation. See the MATLAB documentation for details on the axis
, title
, xlabel
, and ylabel
functions.
See Also
datedisp
| datenum
| datestr
| datevec
| date
| holidays
| nyseclosures
| busdate
| cfdates
| cur2frac
| cur2str
| frac2cur
| bolling
| bollinger
| candle
| candle
| pointfig
| highlow
| highlow
| movavg
| dateaxis
| load
| size