Set Up A Custom Time Dimension - IBM Cognos User Manual

Procedure
1. Open the property sheet for the time dimension whose absolute range you
2. In the Earliest date and Latest date boxes, type the dates that represent the
3. On the dimension line of the Dimension Map, click the time dimension and,
4. Open the Categories diagram and check for an Invalid Dates category. If this is

Set up a Custom Time Dimension

Instead of using standard date levels, with their built-in definitions and functions
for calendar and lunar time periods, you can create a time dimension that tracks
measures over custom time periods, such as work shifts and hours within shifts, or
project phases and timed sub-phases.
For example, suppose you need to track the temperatures of various pieces of
equipment in an electric generating station. The raw data is captured every two
hours, and stored in a database. The first few rows are as follows:
You design your model to track the data at the Hour and Shift levels, where each
work day consists of three 8-hour shifts. From this model, you create a PowerCube
that is incrementally updated every eight hours. This provides your maintenance
crews with the critical readings they need in a timely manner.
After you have created a custom time dimension, you can set up relative time
categories for the periods in that dimension. For example, if your model is
designed to show the number of patients monitored during each hour of a nursing
shift, it can also show the number monitored in the same hour of the previous
shift. For more information, see "Setting Up Relative Time Categories" on page 79.
Procedure
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IBM Cognos Transformer Version 10.1.1: User Guide
want to change and click the Time tab.
lower and upper boundaries of the range respectively and click OK.
from the Run menu, click Generate Date Categories.
By default, the Range box shows the date settings you specified in step 2.
However, you can change these if you want to generate a different range of
date categories.
present, repeat steps 1 to 3, making any necessary corrections.
Shift Hour
01 0200
01 0400
01 0600
01 0800
02 1000
02 1200
02 1400
02 1600
1. Click anywhere on the Dimension Map and, from the Edit menu, click Insert
Dimension to add a new dimension.
2. In the Dimension name box, type a meaningful name for the new dimension.
3. In the Dimension type box, select the Time option.
4. Click the Time tab.
Plant Equipment
01-6EL Primary Boiler
01-6EL Primary Boiler
01-6EL Primary Boiler
01-6EL Primary Boiler
01-6EL Primary Boiler
01-6EL Primary Boiler
01-6EL Primary Boiler
01-6EL Primary Boiler
Temperature
235
237
233
235
228
232
231
233