You can assign specific attributes to values predicted by Forecast with Predictions creates additional records in the output. Of sort work space needed, you must take into account that Forecast with Parameter to enable the external sort to estimate better the amount REGRESS are not supported in the same request when the display command The CURR attribute for creating a currency-denominated field. Up to seven additional Forecast Recap expressions.Ī Recap expression used for Forecast supports Up to seven non- Forecast Recap expressions and Of these additional columns varies depending on the specific request. That are not printed in the report output. The process of generating the Forecast values creates extra columns Notation is not supported in a request that includes Forecast. Specify the options when the field is first referenced in the report In a non-recursive Forecast request, useĪn empty Compute expression prior to the Recap.Not recognize any syntax after the closing semicolon ( ). When using a Recap expression with Forecast,Ĭontain only the Forecast expression.Should be spaced evenly in order to get meaningful results. Moving average and exponential moving average methods, data values It canĬoexist with a function of the same name, as long as the function Note: Although you pass parameters to Forecast usingĪn argument list in parentheses, Forecast is not a function. With Forecast, the field must be a summary field. (or if there are no Across fields, the last By field) of With multiple display commands, Forecast operates on the last Across field When the highest-level sort field changes its value. The request does not contain an Across field, it operates on the Values and forecast values when specified. Is displayed in the report along with the original field when it However, the original column is stored inĪn output file unless you set HOLDLIST to PRINTONLY.Ī new field contains the results of Forecast calculations. If it was referenced in the display command, and the Recap columnĬontains the original field values followed by the number of predicted In this case, the original field is not printed even That contains the results is also the field used to generate the ForecastĬalculations. Or the same field used in the Forecast calculations (recursive): ![]() That contains the result of Forecast can be a new field (non-recursive) To use, and the number of predictions to generate. Including the field to use in the calculations, the type of calculation You specify the parameters needed for generating estimated values, Therefore, Forecast predictionsĪre not always reliable, and many factors determine how accurateīy including Forecast in a Recap expression. Their use and reliability are the responsibility of the user. The calculations based on the data provided, but decisions about The calculated regression equation is used to derive trend and predicted The same calculations beyond the data points by using the generated When predicting values in addition to calculating trends, Forecast continues Uses this linear equation to estimate values. The coefficients of a straight line that best fits the data points and ![]() ![]() For details, see Using Double Exponential Smoothing.įor the tendency of data to repeat itself in intervals over time.įor details, see Using Triple Exponential Smoothing. For details, see Using Single Exponential Smoothing.įor the tendency of data to either increase or decrease over time CalculatesĪn average that allows you to choose weights to apply to newer and For details, see Using a Simple Moving Average.Ī weighted average between the previously calculated value of theĪverage and the next data point. The calculations you can make to identifyĪ series of arithmetic means using a specified number of valuesįrom a field. Values beyond the range of those stored in the data source by using You can calculate trends in numeric data and predict Calculating Trends and Predicting Values With Forecast
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |