I think overwriting an existing layer in memory is not a good practice.

 Updating existing geometry or attribute data would be great, such as when one 
merges two themes, and when the second theme is only contributing matching 
attribute. But overwriting should at least not be the default behavior.  

While using Python, I always feel it is not good that it wants to create a new 
even if the data I am adding is a dbf file. I think that is not helpful, there 
should be an option to append the data (this may apply to both the geometry and 
attribute) or make an new one.

Thank you,

Maaza
 
--- On Mon, 3/7/11, Borys Jurgiel <[email protected]> wrote:

From: Borys Jurgiel <[email protected]>
Subject: Re: [Qgis-developer] In with the new, out with the old?
To: [email protected]
Cc: "Chris Crook" <[email protected]>
Date: Monday, March 7, 2011, 6:31 PM

Dnia poniedziałek 07 marca 2011 o 23:48:46 Carson Farmer napisał(a):
> Ok, I'm getting the overwhelming feeling that people want to be able
> to 'write' to memory layers. I'll try to add this functionality.

Yupiiii!!

> However, I really don't think this should be the 'default' or
> primary/sole output type. I think what I'll probably do is simply add
> 'output options' to the current output file dialog, such that users
> can choose memory layer (this might require some work on a more
> generic vector file writer), shapefile, kml, whatever...

Yes, exactly :) Nobody says it should be the only option. But about the 
default... well ;)

> So a tool to delete vector(s)/raster(s) and associated files.
> Something like a open file dialog where you can select x number of
> QGIS supported vector/raster files, and delete them all in one go?
> That would be handy...

Yes. And also a reverse possibility: to select a few layers to save and remove 
everything else. Of course, for a safety, it shoud sort and filter files by a 
timestamp (like clearing data in Firefox).

There are only few things in this world that I hate. One of them is saving to 
another and another and another and another file :D

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