The REDUCE function is used to reduce a given array to an accumulated value defined by the LAMBDA function. It is somewhat reminiscent of conditional data aggregation functions but provides far more possibilities. In the example that follows, you will be able to see its application for calculating the last day of the month when sales were higher than average.
MAP is used as an auxiliary function, in combination with the LAMBDA function, it is dynamic in nature and returns all those data range values that meet the specified condition. It reminds a little of other functions for working with dynamic arrays, but instead of values, it returns those that were calculated within a given expression. The LAMBDA function is in charge of the calculation.
LAMBDA is a new Excel function that allows easy creation of formulas, for one or more parameters. It works similarly to the LET function, but offers significantly greater capabilities. This feature was announced 2 years ago and only today it was included in the Microsoft365 update, so I’m looking forward to finally sharing with you the knowledge of how to use it. Let’s get to know the LAMBDA function!
One of the earlier “recipes” was about the INDIRECT function. It serves to forward a range as a parameter of SUM, AVERAGE, MAX, MIN or, for example, some other aggregation function. A range is defined as string that is contained in another cell. Let’s show, in one simple example, how this works.
Sales volume in relation to a given target can be shown by a goal achievement chart. There is another way to do this, and that is to display real sales values instead of moving the intersections of the x and y axes, using a Combo chart in which the target would be a horizontal line based on the data in the table. Also, by adding the Spin Button control, we will be able to change a goal easily, which leads to the dynamic chart.