>
> ----
>
> Sent using Manchester encoded voltage pulses over a link to form packets
> which contain other higher level packets along with this message and
> signature which also contains the IP address to the destination and passing
> through many router links which may queue the packets at different amounts
> and possibly arrive out of order only to be reordered by the TCP/IP stack
> in the kernel of the recipient's server and displayed by a program running
> in userspace on the device you are currently looking at.
>
>
>
> On Sun, Nov 11, 2012 at 7:58 PM, Matt Flax <
flatmax flatmax org> wrote:
>
>> Johannes,
>>
>> I can confirm what Brian writes ... I have used gtkdatabox to update that
>> frequently and I think his application (brp-pacu) does some updating in
>> semi-real time.
>> The nice thing about gtkdatabox is that you set the pointers to your x/y
>> data once and their element size and you only need to 'refresh' to update
>> the plot ... really fast and nifty. This is how to do a refresh (axis is
>> the thing you need to refresh) :
>>
>> gtk_widget_queue_draw (GTK_WIDGET (axis));
>>
>>
>> Further you can copy the zoom functionality and apply it to sliders which
>> are logarithmically stepped ... that shouldn't be a problem.
>>
>> If you want to change the size of the vector you are plotting, you will
>> re-call the function which sets up the pointers and the size. Look at this
>> page in the documentation :
>> api/html/gtkdatabox__lines_8h.html#ae54c4690b9bb71b079196b370995a394
>>
>> Matt
>>
>>
>> On 11/11/2012 06:34 PM, Brian Phelps wrote:
>>
>> I have never tried this but you could do something similar to what the
>> lisajous example does (update the data every 50 msecs or so) and also
>> update the range too.
>>
>> So update the X data range when you update the data every 50-100msecs and
>> this should work fine. If you would like to submit an example we could
>> also include it in the demo.
>>
>> In theory gtkdatabox should not have a problem doing this but I have not
>> tried it in a situatoin like this.
>> ----
>>
>> Sent using Manchester encoded voltage pulses over a link to form packets
>> which contain other higher level packets along with this message and
>> signature which also contains the IP address to the destination and passing
>> through many router links which may queue the packets at different amounts
>> and possibly arrive out of order only to be reordered by the TCP/IP stack
>> in the kernel of the recipient's server and displayed by a program running
>> in userspace on the device you are currently looking at.
>>
>>
>>
>> On Sun, Nov 11, 2012 at 12:53 PM, Johannes Deutsch <
j_deutsch web de>wrote:
>>
>>> Hi all,
>>>
>>> i'm learning gtk since recently and discovered gtkdatabox which seems to
>>> be suited to integrate in my project (a tool to log the step response
>>> of a system). So i'm very new to gtkdatabox and just studying the
>>> examples.
>>>
>>> Unfortunately using the examples i can't figure out if the kind of
>>> application i am going to create is actually feasible with gtkdatabox.
>>>
>>> I want to plot a data stream (stepresponse sourced by a fast DAC) in
>>> real time similarly like gnuplot does it in the following video:
>>>
>>>
http://www.youtube.com/watch?v=SoF81jc9tDo
>>>
>>> Unlike this video shows, the user should be able to scroll back to
>>> regions of previously logged data.
>>>
>>> In terms of gtkdatabox i would like to dynamically increase the
>>> interval between the left- and right-limits of the databox while the
>>> size of the zoomed selection should remain constant. This has the
>>> effect, that the scrollbar gradually decrease with remaining time while
>>> permanently aligned at the left corner of the widget (as long as the
>>> user does not scroll).
>>>
>>> So far i can't find a function which zooms to a section of the graph. A
>>> function which does just the same what a user can achieve with dragging
>>> the mouse and click inside the selection. Does this function or a
>>> similar function exist? Or is there another way to achieve this?
>>>
>>> Also i would like to know how gtkdatabox handles a dynamically
>>> increased datasets!?
>>>
>>> I hope some of you experts can help me to answer my questions?
>>>
>>> Thanks a lot for your effort and with best regards
>>>
>>> Johannes
