[Qgis-user] Toggle editing question

[Erica Donnelly-Swift]

Hi Benoit,

Thank you for your response....


> you could use Vectors -> Geometry Tools -> Multipart
> to singleparts


yes this solves the problem.

Many thanks

Erica

On 20 Sep 2010, at 12:53, Benoit de Cabissole wrote:

> Hi Erica,
>
> Looks like you have a multipart-multilines vector file.
>
> On your PrimaryRd.shp you could use Vectors -> Geometry Tools ->  
> Multipart
> to singleparts
> to create individual lines for each of your road sections.
> And then used the resulting shapefile to onlt select the roads you  
> want.
>
> Hope this helps,
> Benoit
>
>
>> -----Original Message-----
>> From: qgis-user-bounces at lists.osgeo.org
>> [mailto:qgis-user-bounces at lists.osgeo.org]On Behalf Of Erica
>> Donnelly-Swift
>> Sent: Monday, 20 September 2010 12:35
>> To: qgis-user at lists.osgeo.org
>> Subject: [Qgis-user] Toggle editing question
>>
>>
>> Hi all,
>>
>>
>> I'm working on a road network vector file, however I have encountered
>> a small issue, and I would be very grateful if you could please offer
>> some advice, thanks
>>
>> Q: How can I get QGIS to delete specific sections of road? (And not
>> delete the whole  primary road network)
>>
>> I worked with this road vector map  a few months ago and managed to
>> select a specific route using toggle editing....I'm unsure why there
>> seems to be a problem this time.....
>>
>>
>>  I have outlined the steps below
>> (I'm working on MAC OSX 10.5.8, QGIS version 1.4.0 Enceladus)
>>
>> 1) I have uploaded the roads.shp through QGIS  (roads.shp is a file
>> for a road network)
>>
>> 2) I went into the attributes table and selected the Primary roads
>>
>> Attribute table contents:
>> ID	RoadType 	Length
>> 0    	Motorway	XXXX
>> 1    	Primary		XXXX
>> 2    	Secondary    XXXX
>> 3      Regional       XXXX
>>
>>
>> 3) I saved the selected primary roads as a PrimaryRd.shp file
>>
>> 4) I loaded this PrimaryRd.shp file into QGIS
>>
>> 5) I selected toggle editing mode, but when I select features - all
>> roads are highlighted and when I delete.... it deletes all the roads
>>
>>
>>  I think it may possibly be related to the attributes table, but I'm
>> unsure how to expand this table
>>
>>
>>
>>
>>
>>
>>
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>
>