[Openstreetmap-dev] editing applet very unresponsive
Lars Aronsson
lars at aronsson.se
Sun Aug 28 07:30:13 BST 2005
Tom Carden wrote:
> Also, part of the unresponsiveness is down to the overhead of
> the XML-RPC API, which we hope to alleviate with a new REST API
If the problem is that you try to transfer the coordinates of 5000
GPS samples, this is not going to improve by moving from one kind
of API to another. You must cut down the amount of data that
needs to be transferred. Producing a bitmap image of the grey GPS
samples on the server and transferring it as a GIF or PNG image
over the network should be faster. It can then be used in the
applet as a background slate for drawing the black nodes and
lines. If zooming and panning are locked to discrete levels, the
images can be cached on the server. The cached images only need
to be cleared when new GPS points are uploaded.
--
Lars Aronsson (lars at aronsson.se)
Aronsson Datateknik - http://aronsson.se
More information about the dev
mailing list