Command Overview

The trendline command is used to plot values found in a range into a series of points on a chart. There is no report other than the chart displayed (which can also be saved as a file). The command supports four sources of data for testing:

1. Data file in tab separated value format
2. WorkSheet
3. Selected range within a worksheet
4. Database (e.g. MS-Access, MySQL, etc)

Syntax

The command is entered on the command line as the command name ("tl") followed by one or more command parameters. Each command parameter consists of an argument name, immediately followed by an equal sign ("=") and then immediately followed by a value. The value may be enclosed with quotation marks, and must be enclosed by quotation marks if the value consists of any embedded spaces.

An example of a command parameter to specify that the file name to be processed is test.txt is entered as "file=test.txt" (without the quotations). Each argument on the command line must consist of only valid parameter names. If a required parameter name is missing, then the command line will be colored yellow, an error message will be displayed on the Excel status bar and an audible tone will be sounded.

The following is a listing of all parameter values for the trendline command:

An example

The command to display a trendline chart from data in the file named \test\invoice\tran.txt using the amount column named "Amount", is as follows:

tl file=\test\invoice\tran.txt col="Amount"

Output from the processing will be a chart of data points

An example of the command bar is shown below:

An example of the chart is shown below:

Main Form