 
CALCULATORS & TABLES
Part 2 of 4
Filters - Which filter should I use for my black and white pictures? I
have a confusing collection of filters to use with black and white film. Some of the
effects are subtle and some are quite dramatic but I can't ever remember which filter to
use when. The New York Institute of Photography sent me a wonderful paper filter wheel but
I wanted something more durable. Since I keep my Newton in the camera bag, I decided to
write the Black and White Filter calculator to help. It's easy to use. Simply tap your
problem. For example to "darken" a "blue" sky "moderately"
just tap those three selections. The Newton will display the proper filters to choose from
for the desired effect. The Newton will also display filter factors and remind you to
adjust your f-stops accordingly. However, if you are using a through-the-lens meter, the
meter may automatically compensate for the filter. This program is part of a suite of
photographic utilities I am writing for the Newton. It works on the "classic"
message pads and should be upwardly compatable. If there are problems, please let me know.
However this program is "freeware" and the usual disclaimers apply. I'd love to
hear from you -- especially if you have any suggestions for future utilities or
photographic applications.
FormulaGen 0.1 Demo - FormulaGen is a remarkable new utility which lets
you to enter your own formulas into the Newton's formula roll. Simply type any
Newtonscript expression (such as "a+b=c", "(wieners + buns) /2 =
hotdogs", or "N*(N+1)/2=N!" into FormulaGen's "Formula" window,
then enter a carriage-return. If the Newton likes your formula it will disappear from the
window, & the next time you tap Formulas in the Extras drawer you'll find that a panel
for "c", "hotdogs", "N!", or whatever has been installed.
Note that everthing to the right of the equal-sign in your formula is simply used as the
label for your formula & the target for evaluation, & is not itself evaluated
algebraically.
Formula is a set of packages which allows Newton
users to create basic equations using text or a drag-n-drop palette of symbols. The
results are graphically formatted equations, that can be used in Notes, Works, or any
document that allows graphic input. Formula works by taking text and parsing it to create
the formulated expression. For example, the sentence "integrate(a,b) x^2 dx" is
converted by Formula into the graphical expression. Although Formula still does not
provide hand-written recognition of symbols, this text-entry method is quite flexible and
powerful. It supports integrals, summations, superscripts (for exponents), subscripts, and
various other symbols. The palette display an example of all symbols which you can
drag-n-drop onto the Formula view. It is useful for rapid prototyping of equations,
because it can generate the basic pattern for the equation. Formula comes with two
packages - one is for use with Newton Works and the other for the native Notes
application. Both feature a formula view, equations saved in Notes automatically,
formulas resizing, formulas copying to the clipboard and the ability to paste the Formula
anywhere.NOS 2.1 users can include formatted equations in documents for printing, faxing,
email, and even beaming. Equations will even correctly export as images through NCU to
desktop word-processors. Forumla is still in beta, and developers should contact Sine of
the Times before including Forumla in a commercial release. Credit: Sine of the Times.
Formulator - An Expression Compiler for Newton. Works like a single cell
spread sheet, about to save expressions with variables in a soup, making them accessable
anytime. This Unregistered Version Maintains this Soup but will not preserve the data
during a reset! Formerly known as Com-piles.
GoFigure Demos - Contains GoFigureAd.pkg, GoFigure Light 1.3 and
GoFigure Data Sheet. GoFigure Light 1.3 - This is a limited "Light" version of
GoFigure which includes four of the GoFigure calculators. It will expire 30 days after you
launch the package for the first time. The commercial version contains over fifteen
different calculators integrated into one easy-to-use program for the Apple Newton
MessagePad or other licensed Newton platform. The GoFigure calculator takes the hassle out
of everyday tasks involving numbers. Want to know how much to tip a waiter? How much to
pay the baby-sitter? What the square root of 34,983 is? and more. Light version contains -
Adding Machine, Conversions (Tech) and Graphic Arts. From Dubl-Click Software Inc.
Graphing101a4 - Graphing 101 provides basic scientific graphing for your
Newton. Enter expression x textually using the pen and palette. Tap on the graph surface
to redraw it. To change bounds, tap on shadow boxes. To make the graph smoother, tap on
Segs in the upper right corner. Now you can calculate equations such as sin(2x)/x!
Rejoice. Graph any log, In, exp, sin, cos tan, arc, hyp or erf equation.
GST Calc NZ - Welcome to GSTcalc, the most popular Canadian GST
calculator for the Newton MessagePad. Actually, this is a version for New Zealand. Herešs
an undocumented feature - you can drag GSTcalc by itšs title! GSTcalc calculates on
rounded numbers, which is the right way to calculate taxes (if you donšt do this, you
will end up with a 1 cent difference.). Contact the author if you want him to produce a
GST calculator for your area!
GSTcalc 1.4 - Welcome to GSTcalc, the most popular Canadian GST
calculator for the Newton MessagePad. GSTcalc is a simple tool for calculating the
Canadian Goods & Services tax, as well as the provincial sales tax for the different
provinces. Here are the percentages used for each province - Alberta, North West
Territories and Yukon 0%, British Columbia & Manitoba 7%, New Brunswick & Nova
Scotia 11%, Newfoundland 12%, PEI 10%, Ontario 8% Quebec (P) 6.58% (for products and
services), and Saskatchewan 9%. GSTcalc calculates on rounded numbers, which is the right
way to calculate taxes (if you donšt do this, you will end up with a 1 cent difference).
HowFar 0.b9 - How Far? is the first version of a set of PDA tools for
pilots and frequent travelers. How Far? sets the user location as the origin and queries
for a destination. Only a part of the city name or airport idendifier needs to be entered.
Given two valid locations, the program calculates the distance (Great Circle distance) and
initial heading between the two locations. The program displays an approximate course line
on the map. Currently, the program includes 65 locations (generally major cities). Great
Circle distances may not be accurate for very short trips.
Hyperfocal calc - is a critical element in any photograph. Have you ever
noticed a picture where everything seems to be in focus from the foreground to the
horizon? The trick is to use hyperfocus. The September 1996 issue of Popular Photography
gives this explanation: Simply put, the hyperfocal distance is the focusing point at which
the lens must be set to provide the maximum depth of field at any aperture. Hyperfocal
scales once were printed on lens barrels but those helps are rare today. You could use a
hyperfocal depth chart or remember the mathmatical equation. freeware.
Law of Cosines - for Newton 1.3, is a calculator demo which you can
input two angles or any three known parameters of a triangle, and it will calculate the
remaining information. LOC will then display a picture of the triangle which you can save
to the notepad along with all the information about the triangle. The triangle displayed
is in scale, unless you have the screen rotated into landscape mode on the Newton 2.0
Units picker : Default is degrees, or you can select radians, this defines both the values
you input, and the values output.
Law of Cosines - for Newton 2.0, is a calculator demo which you can
input two angles or any three known parameters of a triangle, and it will calculate the
remaining information. LOC will then display a picture of the triangle which you can save
to the notepad along with all the information about the triangle. The triangle displayed
is in scale, unless you have the screen rotated into landscape mode on the Newton 2.0
Units picker : Default is degrees, or you can select radians, this defines both the values
you input, and the values output.
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