Handle large set of data using paging

[SallyZhao]

I am working on rendering chart with large amount of data.
Just read some articles about handling large data using paging
today. If anybody has dealt with this before, please give some
thoughts or an example. Thanks in advance.

[aBill]

Hi,



Using paging, application needs to handle ItemPendingError
when the data is not loaded. ListBase components handle it,
however, chart components not. I think charts don't like listbase
component to have scrollbar for unlisted rows. Can you give an
example what you want paging in your charts? Thanks!



William Chan

[SallyZhao]

I am developing a linechart. The data is stored in a plain
text file. What I did is creating a web service that read all
through the data and provide results for charting. The number of
data is about 50000. The width of chart I created is about 15000,
which enbales to view the line series properly. However, the sreen
is not enough to display that long. Therefore, I put my chart in
the fix width canvas and able to scroll to view the whole chart.
Because the hugh amount of data, it takes time to display in the
chart. So I am wondering whether I can display my chart
incrementally, maybe using paging or other techniques. Do you have
any idea?

[aBill]

Hi



It sounds like it is good scenario in chart. However,
scrolling the canvas to see the chart has no get items
involved.(not communicating with the chart controls) I could not
think of anyway to do it! BTW. do you experience any performance
issue in your app. I suggest to use remoteobject to get the data. I
think it can make your app run faster, since amf is more compact
and has faster deserialization.



William Chan