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High-Low-Close graph
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High-low-close graphs are frequently used to show the high,
low, and closing values of stocks on days of trading.
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The high-low-close (HLC) graph lets you chart a range of
values on an X?Y grid. The range is shown as a vertical bar, with horizontal
crossbars for the high, the low, and a normative value usually called the
close. An alternate version, the open-high-low-close (OHLC) graph, adds a
fourth crossbar for another normative value usually called the open.
HLC and OHLC graphs are most often used to chart stock prices. For this reason,
they’re often called "Wall Street" graphs.
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An HLC graph must have three data sets (high, low, and close values), and an
OHLC graph must have four data sets (open, high, low, and close values).
There’s no limit on the number of data points you can graph, but each data set
should have the same number.
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If you don’t supply an X position for each data point, Graphics Server
automatically places points at increments of 1, starting at 0.
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You can optionally draw the graph without the open and close bars, without the
high and low bars, or with no bars at all.
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A line may be drawn showing the moving average for any data set (open, high,
low or close).
Use a high-low-close graph...
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When you’re charting stock prices.
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When you’re charting other values that can be set up in a similar fashion with
three (HLC) or four (OHLC) data sets—for example, high, low, and average daily
temperatures by month.
Other graph types to consider
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If you’re considering the OHLC graph, be sure to look at the
candlestick graph as well. It shows the same information
and also emphasizes the trend (up or down) of closing values from point to
point.
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If you want to chart only the closing prices for stocks, use a
line graph.
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The open-high-low-close graph includes an additional
crossbar for the "open" value.
This example has the high and low crossbars removed.
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