[Qgis-user] Redraw time

[Richard McDonnell]

Hi Wolstan,
GGP GIS appears to be customised/out of the box, ready to deal OS Mastermap, it most likely has built in filters and tools to deal with this dataset efficiently.

Qgis is an international Open Free GIS, which with a little patience and tweaking, can easily deal with National Vector based Datasets.

We use the OSi (Ordnance Survey Ireland) PRIME2 Datasets (same type dataset as Mastermap) in the office and QGIS is quite happy to deal with this data.
We use:
	Postgresql/PostGIS Database, to store the dataset with Geometry and feature Index's. These are then served via WMS, WFS (GeoServer) and direct connection to
	Database.
	Zoom based Filters in styling to reduce the amount of data being redrawn (You don’t need to see individual houses at 1:100,000 now do you)
	Rule Based Symbology, to further filter and style based on attribution

Panning and zooming round Dublin takes less than a second to render at 5,000, 2500 and 1:1000 with maybe 2 seconds (Max) at 1:10,000. 
If I turned on all the layers and started panning round without the Filters and Styling, (or Geodatabase) I would also have large redraw times.
Hope this helps,
Regards,

Richard.


-----Original Message-----
From: Qgis-user [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Wolstan H M Dixie
Sent: 20 August 2018 10:04
To: Nyall Dawson <nyall.dawson at gmail.com>
Cc: qgis-user <qgis-user at lists.osgeo.org>
Subject: Re: [Qgis-user] Redraw time

A minor British GIS called GGP - standing for GeoGraphic Processor.

So how fast is everyone else's redraw? Is it instantaneous or appreciable?

Wolstan


On 20/08/2018 00:08, Nyall Dawson wrote:
> On Sun, 19 Aug 2018 at 03:22, Wolstan H M Dixie 
> <wolstan-dixie at hotmail.co.uk> wrote:
>> Hi all,
>>
>> I am a new user so please be understanding! I am shocked by the 
>> redraw time of a map view. When, for instance, I just pan the map a 
>> little, it takes 10 seconds to redraw [British OS Mastermap vector 
>> data, 64 bit desktop Windows 7]. My previous GIS was so fast it was 
>> essentially instantaneous, and was like dragging a paper map. Is this 
>> normal or are there tweaks I haven't appreciated?
> What was your previous GIS?
>
> Nyall
>
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