Rising Falling Arrow

[Techhead]

How can I implement a rising/falling trend arrow based on a number
that may rise or fall. For example, if the number (variable) is 100
and changes to 101, the "arrow" changes to "up", if the number goes
back to 100, the arrow changes to "down". I'm not a statistical guru
but I am sure there is a definition for this.

I am getting my number variable from a sql server via a query.

[McKirahan]

"Techhead" <jo*********@gmail.comwrote in message
news:11**********************@r56g2000hsd.googlegr oups.com...

How can I implement a rising/falling trend arrow based on a number
that may rise or fall. For example, if the number (variable) is 100
and changes to 101, the "arrow" changes to "up", if the number goes
back to 100, the arrow changes to "down". I'm not a statistical guru
but I am sure there is a definition for this.

I am getting my number variable from a sql server via a query.

Do you mean an image of an up and down arrow?

Will you be getting two numbers so you cant compare them?

Tell us more...

[VK]

On Mar 28, 6:57 pm, "Techhead" <[e-mail]:

How can I implement a rising/falling trend arrow based on a number
that may rise or fall. For example, if the number (variable) is 100
and changes to 101, the "arrow" changes to "up", if the number goes
back to 100, the arrow changes to "down". I'm not a statistical guru
but I am sure there is a definition for this.

I am getting my number variable from a sql server via a query.

If you want to make it client-side then te simpliest way IMHO is to
make three small - say 16x16 - gif images:
1) transparent
2) arrow up
3) arrow down

Then all stock labels are served with transparent gif first and client-
side you do something like:

if (oldVal >= newVal) {
imgObject.src = 'arrowUp.gif';
}
else {
imgObject.src = 'arrowDown.gif';
}

Actually such kind of things is more reliable and natural to prepare
server-side rather than using client-side scripting - IMHO

[Evertjan.]

Techhead wrote on 28 mrt 2007 in comp.lang.javascript:

How can I implement a rising/falling trend arrow

The arrow part:

<http://devrijehuisarts.org/test/jsarrow.asp>
<http://devrijehuisarts.org/test/jsarrow2.asp>

--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

[Randy Webb]

VK said the following on 3/28/2007 12:07 PM:

On Mar 28, 6:57 pm, "Techhead" <[e-mail]:

>How can I implement a rising/falling trend arrow based on a number
that may rise or fall. For example, if the number (variable) is 100
and changes to 101, the "arrow" changes to "up", if the number goes
back to 100, the arrow changes to "down". I'm not a statistical guru
but I am sure there is a definition for this.

I am getting my number variable from a sql server via a query.

If you want to make it client-side then te simpliest way IMHO is to
make three small - say 16x16 - gif images:
1) transparent
2) arrow up
3) arrow down

Then all stock labels are served with transparent gif first and client-
side you do something like:

if (oldVal >= newVal) {
imgObject.src = 'arrowUp.gif';
}
else {
imgObject.src = 'arrowDown.gif';
}

Actually such kind of things is more reliable and natural to prepare
server-side rather than using client-side scripting - IMHO

That would actually not work when oldVal == newVal as the arrow should
stay precisely whatever it was to start with.

if (oldVal newVal){}
if (oldVal < newVal){}

--
Randy
Chance Favors The Prepared Mind
comp.lang.javascript FAQ - http://jibbering.com/faq/index.html
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/