Line reports

Line reports plot individual data points to show how the value of one or more items changes over time.

The value of an item at specific dates or times is displayed as data points connected by horizontal lines. Values along the horizontal axis of the line chart represent the time measurement (years, hours, minutes, milliseconds, and so on). Values on the vertical axis represent the changes to the items being monitored. Users with the report_admin role can define the ranges that are used in a line chart report.

Remarque :

This topic refers to Reporting in the Core UI. For instances migrated to Platform Analytics experience and new Australia instances, see Use cases for different time series visualization types.

This data visualization is supported on the mobile platform. For more information, see Time series reports for mobile and Mobile dashboard preview.

For example, you can create a line report for incident counts, to show how the number of incidents changes over time. The incident count often increases during the first few months after a product upgrade is deployed. Over time, the number of reported incidents decreases as users become more accustomed to the changes in the product. This figure shows the number of incidents per caller over time.

Figure 1. Line report

Create a line report

Create a line report to show the trend in the value changes of one or more items over time.

Avant de commencer

Role required: itil, report_user, report_group, report_global, report_admin, or admin. To create a meaningful report, you must have the right to access the data you want to report on.

For a line report use case, Time series data visualization example.

Procédure

1. Navigate to sys_reports.list and select New.
2. On the Data tab, give the report a name that reflects the information being grouped.
3. Select the applicable source for the report.

   Option	Description
   Data source	Also called a report source, a data source is a table with filters applied to provide a single source of information for all users. For more information, see Report sources. Remarque : If you select a data source used by existing reports, a notification prompts you to view them.
   Table	The raw data from a table with no filters applied. When you select a table, its short description appears below the table name. For trend reporting, you can also select a remote table, which aggregates, in memory, data retrieved from an external source. Then select a Trend by field option to aggregate its data. To learn more about remote tables, see Retrieving external data using remote tables and scripts
   External import	Choose an existing imported report source, or select the Upload icon () to import a new file. See Create a Core UI report from an imported Microsoft Excel document.
   MetricBase	MetricBase enables you to collect, retain, analyze, and visualize custom time series data on the ServiceNow AI Platform. For more information, see MetricBase.

4. On the Type tab, enter Line in the filter, select the Line report type in the Time Series section, and click Next.

   The application shows a preliminary version of the report. To view the updated report at any time, select Run.

5. On the Configure tab, fill in the following fields and select Next.

   Tableau 1. Configure tab

   Field	Description
   Group by	Group report data using the values of this field. For example, in an incident report grouped by Assignment group, all incidents that belong to Software, Service Desk, and Network are placed in separate groups. To group by fields on extended tables, see How to report on extended tables. Select the info icon for a description of the selected field. Configured function fields appear in this list after you save the report. Remarque : It is not possible to group or stack reports by the Tags field, or by certain MySQL database field types, such as MEDIUMTEXT. For more information, see Database field type. Grouping or stacking by Variables or Questions fields is not supported for reports based on database views.
   Additional group by	Extra fields to group the report by. When you select Additional group by fields or function fields, the report includes a control at the bottom that allows you to group the report by any one of the additional fields. To group by fields on extended tables as well, see How to report on extended tables. Select the info icon for descriptions of the selected fields Configured function fields appear in this list after you save the report. Remarque : You can see choices in the Additional group by list that do not appear in the main Group by list. The report does not support grouping or stacking by the extra fields you see. Unlike the main Group by choices, the Additional group by fields are not filtered. If you select an unsupported field, it has no effect. The limitations listed for the main Group by field also apply to the Additional group by field. For more information, see Add an additional group by or stack by.
   Display data table	Select this option to show report data in a list below the report. The list appears on dashboards where the report is added. All report visualizations show the report data when the glide.ui.section508 system property is set to true. The glide.ui.section508 property overrides the Display data table field.
   Configure function field	Configure fields based on calculation of multiple inputs including arithmetic functions. For more information, see Report on function fields. Function field results are calculated when the report is run. You can use the results for aggregations and grouping. You have to save the report before you can configure function fields. Configured function fields appear in the Group by and Additional group by lists after you save the report.
   Trend by	Table field whose values you want to show in a time sequence. Select the info icon for a description of the selected field. Remarque : If you selected a remote table in the Table field, the option you select in this field aggregates the data that was retrieved from an external source and aggregated in memory. To learn more about remote tables, see Retrieving external data using remote tables and scripts.
   Calendar	Calendar that is the basis for the time series in the report. Select either the standard calendar or a customized business calendar.
   per	Time period to group data by. The range of available time periods depends on the calendar that you selected. Time periods range from an hour to a year. You can also specify a date. Remarque : If reporting per week: When the report range includes more than one calendar year, inconsistencies result when a week is split between two years. To show data values more accurately according to ISO weeks, add and enable the glide.db.aggregates.trend.use_iso_week property in the System Properties [sys_properties] table.
   Aggregation	Mathematical calculation to perform on the data. The default is Count, which shows the number of records selected. To show only unique records, select Count Distinct. Select Average, Sum, or Count Distinct, to show a list of fields from the selected Table. Select a field to Aggregate by from this list. If you group the report by a field and select an Average aggregate, you get the average of each group. If a Total value is shown, it is the average of these group averages, not of the individual field values. Select Minimum or Maximum to show the maximum or minimum value for each segment of the report. For more information on aggregation options, see Aggregation in reporting. If you choose Average,Sum, Count Distinct, Minimum, or Maximum, you may be able to aggregate on fields from extended tables. See How to report on extended tables. For information about aggregating on FX currency values, see FX Currency values in reporting.
   Percentage calculation	Method of calculating percentages. The percentage appears when you point to a report segment, such as a bar on a bar report. This field appears when Aggregation is set to Average, Sum, or Count Distinct. Use Aggregation calculates the percentage using the selection in the Aggregation field. Only data that is displayed in the report is used to calculate the percentage. For example, a report shows assets by department with the Aggregation set to Sum and the percentage calculated using aggregation. If the total cost of assets is $100,000 and the cost of assets for Customer Support is $10,000, the percentage for Customer Support is 10%. Use Record Count calculates the percentage using the total number of records in the data set. For example, a report shows incidents by priority. Out of 500 incident records, 200 have low priority. The percentage for the low-priority section is 40%.
   Set Value Formatting	Enables you to configure how to show numerical values in reports, including decimal precision, rounding, minimum and maximum duration units, and abbreviations for duration units. See Value formatting in reports. Remarque : Decimal precision does not work on currency fields.

6. Facultatif : Configure the sort order of the applicable fields in the report (column, row, Group by, Stack by or Trend by depending on the report type).
   Select the filter icon () and choose Add Sort.

   1. In the Sorting Order list, choose the field you want to sort on and then choose a-z or z-a for alphabetical order or reverse alphabetical order.

      The list contains all possible fields from the report's source and fields on extended, or related, tables. The only effective values, however, are the fields chosen for the current report (column, row, Group by, Stack by, or Trend by depending on the report type).

      Remarque :

      On fields from dot-walked (extended) tables, you can only sort on date fields.
   2. Select the sort plus icon () to configure additional sorting order conditions. (Select the sort minus icon ( ) to delete configured sorting order conditions.)
   3. Select Save.

   For fields of the type Choice list, sort order is not determined alphabetically based on Label, it is sorted based on the Value of the choice field. For multi-level pivot table and heatmap reports, sort order is determined by the sequence of the choices in the list.

   

7. Facultatif : To limit the information displayed in the report, select the filter icon () and specify conditions to filter the report data.
   To learn how to construct conditions, see Condition builder.

   Remarque :

   In aggregated and list reports, language-dependent filter conditions may return zero results on localized instances.
8. On the Style tab, fill in the fields as appropriate to configure the appearance of the report.
9. Select Save to continue editing the visualization, or Save and close to return to the Analytics Overview main screen.

Que faire ensuite

• Select the Report info icon () and add a description of the report.
• Select the sharing icon () to open the Sharing menu. On this menu, you can add the report to a dashboard, export the report to PDF, publish the report to the web, and set visibility and schedules.

Line report style options

Configure the look of your line report.

When you create or edit a report, click the Style tab for options to configure the look of your report. The options are organized under two or more of the following tabs: General, Title, Legend, and Axis. To see how the report looks with the changed settings, click Save.

Tableau 2. Line chart style options

Field	Description
General
Chart color	Source of colors used in the report. If you do not group or stack the report, Use one color is automatically selected. In this case, select a single, predefined system color. If you group or stack the report, select one of the following options: Use color palette: Select a color palette from the predefined system color palettes. Use several colors: Define a custom set of Colors using hex codes. You can add any number of colors. Use chart colors: Use the colors defined in Reports > Chart Colors. For more information about the differences between these options, see Predefined colors in reports.
Set color	Color used in the report. This field displays when you select Use one color from the Chart color list. Click the search icon () to choose from the Color Definitions list.
Set palette	Color palette used in the report. This field appears when you select Use color palette from the Chart color list. The palettes are defined in the Chart Color Scheme [pa_chart_color_schemes] table.
Colors	Colors used in the report. This field displays when you select Use several colors from the Chart color list. Enter a comma-separated list of hexadecimal color codes. These colors are independent of the predefined system colors that color palettes and the chart colors use. Remarque : It is not possible to use transparency hex values.
Display data labels	Check box to show the value for each data point.
Do not plot nil as zero	Check box to specify whether to replace missing data points with values of zero. This field is available when creating or editing time series reports (area, spline, line, and step line reports only) that include multiple datasets, and when creating or editing datasets within the applicable time series reports. This field is not available when data in the report is grouped, or is aggregated by Count or Count Distinct. If selected, the report may show gaps where no data exists. Remarque : This property cannot be selected when the source is MetricBase.
Show marker	Check box to display a symbol at each data point.
Custom chart size	Enable the option to specify the width and height of the report in pixels. Remarque : The chart size is ignored when you export the report to PDF. In PDFs, the full page width is used to show the chart.
Chart width	Width of the report in pixels. The default value is 600. This field is available when Custom chart size is selected.
Chart height	Height of the report in pixels. The default value is 450. This field appears when Custom chart size is selected.
Chart size	Chart size. This field is available when Custom chart size is cleared. Options are Small, Medium, and Large. Remarque : The chart size is ignored when you export the report to PDF. In PDFs, the full page width is used to show the chart.
Drilldown view	List view to show when a user selects a segment of a report for which no drilldown report type is specified. This view is also used when the user reaches the lowest drilldown level of a report. See Configure the list layout . If you specify a Report drilldown, Drilldown view is ignored. For more information, see Define a report drilldown.
Decimal precision	Number of decimal places to show. You can show from zero to four decimal places. Default value: 2. To change the default value, create the system property glide.chart.decimal.precision and specify the value. Remarque : Percentage labels do not change accordingly with the decimal precision specified.
Title
Show chart title	When the chart title is shown for the report. Never: Never show the chart title. Report only: Shows the chart title on reports. Always: Shows the chart title on reports, dashboards, and landing pages.
Chart title	The chart title has a maximum length of 40 characters. If no title is entered, the report name is used for the title. This field appears when Report only or Always is selected from the Show chart title list.
Size of the chart title	Size of the chart title in pixels. This field appears when Report only or Always is selected from the Show chart title list.
Chart title color	Color of the chart title. This field appears when Report only or Always is selected from the Show chart title list.
Custom chart title position	Check box to specify X and Y coordinates for the position of the chart title. This field appears when Report only or Always is selected from the Show chart title list.
Chart title X position	Number of pixels to adjust the chart title position right or left. By default the title appears at the center top of the chart. To move the chart title to the right, enter a positive value. To move the title to the left, enter a negative value. This field appears only when Custom chart title position is selected.
Chart title Y position	Number of pixels to adjust the chart title position up or down. By default the title appears at the center top of the chart. To move up the chart title, enter a positive value. To move the chart title down, enter a negative value. This field appears only when Custom chart title position is selected.
Title horizontal alignment	How the chart title is aligned horizontally. This field is available when the Custom chart title position option is cleared.
Title vertical alignment	How the chart title is aligned vertically. This field appears when Custom chart title position is cleared.
Legend
Show legend	Enable this option to show a chart legend. This check box appears when a Group by field is selected on the report form. Legends are truncated by default. To adjust truncation lengths, configure the properties glide.chart.label.legend.truncate_to and glide.chart.label.legend.truncate_to.large. For more information, see Reporting properties.
Legend horizontal alignment	How the legend is aligned horizontally. This field appears when Show legend is selected.
Legend vertical alignment	How the legend is aligned vertically. This field appears when Show legend is selected.
Show legend border	Enable this option to show a border around the legend. This check box appears when Show legend is selected.
Left align legend text	Enable this option to left-align the legend text when the report is viewed in a browser. By default, the legend text is centered. When the report is exported to PDF, PNG, or JPG, the legend remains centered. This check box appears when Show legend is selected.
Axis
Y axis and X axis	Axis to configure the titles, appearance, and labels for.
Title	Title for the axis.
Title size	Size of the axis title in pixels. Default value is 12.
Title bold	Enable this option to show the axis title in a bold typeface.
Opposite	On the X axis tab, enable this option to show the X-axis title on the right side of the report instead. On the Y axis tab, enable this option to show the Y-axis title on top of the report instead of across the bottom.
Display grid	On the X axis tab, enable this option to show horizontal grid lines on the report. On the Y axis tab, enable this option to show vertical grid lines on top the report.
Grid dotted	Enable this option to show dotted grid lines instead of solid lines.
From	Specify a minimum Y-axis value to limit the amount of information in the report. If you select an aggregation field that is not of the type Number, the From and To fields are not available.
To	Specify a maximum Y-axis value to limit the amount of information in the report. If you select an aggregation field that is not of the type Number, the From and To fields are not available.
X axis / Y axis label size	On the X axis tab, specify the size of the labels for the rows of the report. On the Y axis tab, specify the size of the labels for the columns in the report.
Label bold	Enable this option to show the labels of the report in a bold typeface.