volarea

Price and volume chart

Syntax

volarea(Data)

h = volarea(ax,Data)

Description

volarea(Data) plots a chart from a series of price and traded volume of a security.

h = volarea(ax,Data) adds an optional argument for ax.

Examples

Plot Asset Date, Price, and Volume on a Single Axis for a Stock

Load the file SimulatedStock.mat, which provides a timetable (TMW) for financial data for TMW stock. This example shows how to plot asset date, price, and volume on a single axis, given asset TMW containing asset price and volume in most recent 21 days. Note that the variable name of asset price is be renamed to 'Price' (case insensitive).

load SimulatedStock.mat;
TMW.Properties.VariableNames{'Close'} = 'Price';
volarea(TMW(end-20:end,:))
title('Price and Volume Chart for TMW')

Input Arguments

Data — Data for prices and traded volume

matrix | table | timetable

Data for prices and traded volume, specified as a matrix, table, or timetable. For matrix input, Data is an M-by-2 matrix of prices and traded volume. Timetables and tables with M rows must contain variables named 'Price' and 'Volume' (case insensitive).

Data Types: double | table | timetable

ax — Valid axis object

current axes (ax = gca) (default) | axes object

(Optional) Valid axis object, specified as an axes object. The volarea plot is created in the axes specified by ax instead of in the current axes (ax = gca). The option ax can precede any of the input argument combinations.

Data Types: object

Output Arguments

h — Graphic handle of the figure

handle object

Graphic handle of the figure, returned as a handle object.

More About

Price and Volume Chart

A price and volume chart is a graphical representation used in financial markets to display the price movements of a security (such as a stock, commodity, or currency) alongside the volume of trades that occur over a specific period.

Version History

Introduced in R2008a

R2022b: Support for negative price data

The Data input accepts negative prices.

R2018a: Support for matrix, time, or timetable input for data

volarea accepts Data input as a matrix, timetable, or table.

The syntax for volarea has changed. Previously, when using table input, the first column of dates could be a datetime array, date character vectors, or serial date numbers, and you were required to have specific number of columns.

When using table input, the new syntax for volarea supports:

• No need for time information. If you want to pass in date information, use timetable input.

• No requirement of specific number of columns. However, you must provide valid column names. volarea must contain a column named ‘price’ (case insensitive).