[postgis-users] GTK/Gnome GIS Client

[John Cole]

You might want to try http://sourceforge.net/projects/shapedotnet for a
speed comparison.  I've found it performs on par with ESRI's MapObjects.  I
ported this to the .Net compact framework, and it was half the speed of
ESRI's ArcPad (both of which were painfully slow).

So not only is there a difference between how you code, you can have a major
difference depending on which CLR you use.  I would expect a major
improvement with .Net 2.0 CF, but I haven't played with that yet.

John Cole

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Mateusz
Loskot
Sent: Tuesday, August 16, 2005 7:49 PM
To: PostGIS Users Discussion
Subject: Re: [postgis-users] GTK/Gnome GIS Client

Paul Ramsey napisał(a):
> This is getting extremely OT but:
> Our uDig experience is that it's not the language it's the 
> implementation.  There's lots of stupid inefficient ways to render 
> stuff, and only a few efficient smart ways.  If you pick a stupid  way,
> you language means nada.  Anyhow, doing things the smart way our  Java
> implementation seems to run as fast as ESRI's C++  implementation, so
> there you go (for whatever that is worth, which is  little).

Yes you are certainly right.
I'm just asking about experiences the Author has witn mono.
In my opinion .NET applications aren't very robust
(weak memory management, you are not able to force GC to destroy
objects, etc.) but it is a matter of taste.
Of cource you don't have to allocate huge structures and collections
in memory as Manifold does, but read all data straight from file
as ArcView.
I have experience with GIS applications on Windows CE mostly, where
resocerces are very limited.
On desktop you may install 3 GHz CPU and TB of RAM,
but when you have 200MHz and 64 MB RAM on Pocket PC device
then you have not many choices.
Mobile GIS apps in .NET are extremly slow, that's what I experienced
and that's why I'm asking.
Definitely, I'm not going to return this thread to technology war :-)

Cheers


-- 
Mateusz Łoskot, mateusz (at) loskot (dot) net
Registered Linux User #220771
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