HELP History Attribute Node

[stefano]

My Waveform Graph is not a standard WG because it does have the Attribute
Node History. Therefore, I can't set the Attribute Node History to nothing
to delete a plot.
Is there another way to delete plots instead of using the Attribute Node
History?
Thanks!
Stefano

[Steve Drake]

On Fri, 24 Mar 2000 15:31:26 +0100, "Carmafresh"
wrote:

>My Waveform Graph is not a standard WG because it does have the Attribute
>Node History. Therefore, I can't set the Attribute Node History to nothing
>to delete a plot.
>Is there another way to delete plots instead of using the Attribute Node
>History?
>Thanks!
>Stefano
>

Hi, just so you know what I do.

I just looked and the XY Graph does not have a history attribute so
what about writing out an array like [0,0] to clear the graph image?

Exactly which graph are you using?

Regards,

Steve Drake

[stefano]

Steve Drake wrote in message
u75nds02rs5soqpmavbiighjd06vjptlhb@4ax.com...
> On Fri, 24 Mar 2000 15:31:26 +0100, "Carmafresh"
> wrote:
>
> >My Waveform Graph is not a standard WG because it does have the Attribute
> >Node History. Therefore, I can't set the Attribute Node History to
nothing
> >to delete a plot.
> >Is there another way to delete plots instead of using the Attribute Node
> >History?
> >Thanks!
> >Stefano
> >
>
> Hi, just so you know what I do.
>
> I just looked and the XY Graph does not have a history attribute so
> what about writing out an array like [0,0] to clear the graph image?
>
> Exactly which graph are you using?
> My graph
> Regards,
>
> Steve Drake
Hi, Steve.

Yes, I use
this method to clear the graph image but: why the attribute Node
History isn't?

See the attachment: my graph!

Help me please!
Regards,
Stefano



[Attachment mygraph.vi, see below]

[Steve Drake]

On Fri, 24 Mar 2000 18:46:21 +0100, "Carmafresh"
wrote:

>

>Yes, I use this method to clear the graph image but: why the attribute Node
>History isn't?
>
Have not looked at the attachment yet but I did find the following
information in the "G Programming Reference Manual".

" A graph indicator is a two-dimensional (2D) display of one or more
plots. The graph receives and plots data as a block. A chart also
displays plots, but it receives the data and updates the display point
by point or array by array retaining a certain number of past points
in a buffer for display purposes."

Also.

" The waveform chart is a special type of numeric indicator that
displays one or more plots. Charts are different from graphs in that
cha
rts retain previous data, up to a maximum which you can define. New
data is appended to the old data, letting you see the current value in
context with previous data."

So the history attribute is present for charts because with charts
you want to keep the display contigeous but graphs are for plotting
whole arrays at one time so you don't need a history attribute.

Hope this helps.

Regards,

Steve Drake

[stefano]

Hi Steve,
thanks for your help.
If you find it useful, I'm going to show you the way that I use to clear a
plot ( I know that it's very trivial...... but it works!):
when I need to not show a plot, I set the attribute node plot color at the
same value of the background: in this way, you can't see the plot though
it's still there!
My best Regards,
Stefano.