Instantaneous Level
Projections are quite different from the projections
about rates and amounts that other preceding projections
categories like Stepped Rate
Projections deal with. Whereas the other categories
generally deal with flows of money, or production,
rent, whatever, Instantaneous Level Projections are about
looking up a level according to the prevailing
date. They are more like a lookup.
There are 5 families in this category:
- Levels is
similar to the Stepped Rate
From and Stepped Rate
To families, except that what is returned is a
level at a particular time, not the results of applying
a rate over a time period. So the familiar models of
functions are present such as Level (whose constant rate
equivalent would be Con), FLevels (stepped rate equivalent
FStep) etc.
- Levels
Market, is the levels equivalent of the Stepped Rate Market family,
with functions such as FLevelsGrowMkt and TLevelsFcstMkt. As usual
with the ...Mkt... feature, the
function uses specified levels where they are non-blank
and non-zero, otherwise it defaults to a level read off
a forecast.
- Growth is
about the various ways of applying GrowthRates to inflate a
figure in the future. Grow
simply applies GrowthRates and GrowthDates to inflate a
figure from one date to another, with the added ability
to specify, via RevMonthsOpt, whether that
growth is applied continuously or in steps, every few
months. FGrowStep and TGrowStep allow you to specify
the dates of those steps (using FromDates or ToDates), and there a further
group of functions that use the ...Mkt... feature to either use a
specified level or one off a supplied forecast.
- Forecast
is a very basic family concerned with looking up values
off a forecast. Fcst is simple,
popular and versatile and does just this kind of
lookup.
- Forecast Specific Times is about
when the supplied forecast is not regularly time-spaced
as is the requirement in the Forecast family and
forecasts generally. The basic workhorses are FcstT and TFcstT, which use FcstFromDates and FcstToDates respectively to
allow specification of the forecast.
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