Re: online demo

#1

As far as I can see there are no additions in this area. You can do your
own calculations of acos and asin using trignometric formulae.

For example: trying to solve the equation cos(x) = y for x. We can write
sin(x) = Sqrt(1 - y^2)
tan(x) = Sqrt(1 - y^2)/y and finally x = atan(Sqrt(1 - y^2)/y)

Technically there is sign indeterminacy in Sqrt but in practice there
isn't because you have to place restrictions on the range of values for
the solution x in order to get a unique answer.

(This looks like the sort of thing which would make a custom function
and I will be surprised if it has not been done somewhere)

Martin Trautmann wrote:

Quote:

Hi all,

I wanted to check which functions are given in FMP8 now:
unfortunately, FileMaker Corp. does not provide reasonable docu here
again.

I checked the manuals without success.

But to my surprise I found an 'online demo' which should work the same
as FMP7 itself.

I did not see it on filemaker.com, but filemaker.de only:
http://www.filemaker.de/runaware/index.html

They claim it will require Java.

However, it does not run on Win without Active-X, nor on Mozilla for
Unix.

What I wanted to check: Does FMP8 offer 'arc cos' by now? This is a
function which is a typical requirement in order to calculate with GPS
coordinates.

FMP7 offers sin, cos, tan and atan, but no acos or arccos.
How about FMP8? Still missing?

--
Dan
Using
FMP7.03, WinXP SP2

#2

I'll respond to my own comment at the end of the last post. There are
two variations on acos in the two custom functions referenced below
(including the necessary range restrictions)

http://www.briandunning.com/filemake...l.php?fn_id=51

http://www.briandunning.com/filemake....php?fn_id=233

Dan wrote:

Quote:

As far as I can see there are no additions in this area. You can do
your own calculations of acos and asin using trignometric formulae.

For example: trying to solve the equation cos(x) = y for x. We can
write sin(x) = Sqrt(1 - y^2)
tan(x) = Sqrt(1 - y^2)/y and finally x = atan(Sqrt(1 - y^2)/y)

Technically there is sign indeterminacy in Sqrt but in practice there
isn't because you have to place restrictions on the range of values
for the solution x in order to get a unique answer.

(This looks like the sort of thing which would make a custom function
and I will be surprised if it has not been done somewhere)

Martin Trautmann wrote:
Hi all,

I wanted to check which functions are given in FMP8 now:
unfortunately, FileMaker Corp. does not provide reasonable docu here
again.

I checked the manuals without success.

But to my surprise I found an 'online demo' which should work the
same as FMP7 itself.

I did not see it on filemaker.com, but filemaker.de only:
http://www.filemaker.de/runaware/index.html

They claim it will require Java.

However, it does not run on Win without Active-X, nor on Mozilla for
Unix.

What I wanted to check: Does FMP8 offer 'arc cos' by now? This is a
function which is a typical requirement in order to calculate with
GPS coordinates.

FMP7 offers sin, cos, tan and atan, but no acos or arccos.
How about FMP8? Still missing?

--
Dan
Using
FMP7.03, WinXP SP2

#3

Martin

My apologies for reading into your post a question to which you already
have, as demonstrated, a simple and accurate answer.

I would have thought it unlikely that FMI will add these functions to
Filemaker since they are so easily calculated from the existing
functions.

Martin Trautmann wrote:

Quote:

On Fri, 2 Sep 2005 11:45:34 +0100, Dan wrote:
As far as I can see there are no additions in this area. You can do
your own calculations of acos and asin using trignometric formulae.

For example: trying to solve the equation cos(x) = y for x. We can
write sin(x) = Sqrt(1 - y^2)
tan(x) = Sqrt(1 - y^2)/y and finally x = atan(Sqrt(1 - y^2)/y)

thanks!

acos (x) =

case(
x = 1, 0,
x = -1, pi,
pi/2 - atan (x / sqrt (1-x^2))
)

works very well.

--
Dan
Using
FMP8 Advanced
WinXP SP2

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Re: online demo

comp.databases.filemaker comp.databases.filemaker

Re: online demo - 09-02-2005 , 05:45 AM

Re: online demo - 09-02-2005 , 06:15 AM

Re: online demo - 09-02-2005 , 11:32 AM