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Summarize iReport Template Data

14 bytes added, 14:04, 13 November 2015
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==Summarising Report Data==__NOEDITSECTION__
In addition to displaying report details in an iReport template, the iReport Designer allows you create creating summaries or calculations of data returned in the report. These can take the form of totals, sums, and counts (stored in Variablesvariables), or more complicated data summaries such as Crosstabs crosstabs or Chartscharts. Because summarizing data necessarily depends on multiple records, data summaries must exist in bands ''after'' the Detail band such as the Summary band, Footer band, or Group Footer bands.
===Adding a Footer or Summary Section to the Report===__NOEDITSECTION__
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{{note|It may be helpful to add a text label beside any counts that you add to the report to identify the value. To add a text label, drag the static text field element [[Image:iRepText.png]] from the '''Palette''' pane. }}
===Displaying Totals===__NOEDITSECTION__
#* '''Key Expression''': the field used to group data for charting purposes. To change the field, simply select another field. '''Note:''' The field must be used in the creation of the variable used in the value expression or the results will be incorrect.
#* '''Value Expression''': the variable used to store the data to be displayed in the chart. If changes are made this value it is recommended to edit the variable properties as well.
#* '''Label Expression''': the area used to define the labels for the chart. Any valid expression can be used here. See [[Summarize i-Report iReport Template Data#Variable Expressions|Variable Expressions]] for more details.
#*'''Category Expression''': the field used to group data for charting purposes. To change the field, simply select another field. '''Note:''' The field must be used in the creation of the variable used in the value expression or the results will be incorrect.
#* '''Value Expression''': the variable used to store the data to be displayed in the chart. If changes are made this value it is recommended to edit the variable properties as well.
#* '''Label Expression''': the area used to define the labels for the chart. Any valid expression can be used here. See [[Summarize i-Report iReport Template Data#Variable Expressions|Variable Expressions]] for more details.
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