[Qgis-user] New Shapefile Features Fail to Save

[Carlos Cerdán]

Hi Springfield:

I've had similar trouble some time ago, as a QGIS beginner user. Previous
given advices are for not too-beginner users, but I think my experience can
be useful for the list (or even for you?):

That time my error was my Snapping options: I had selected two or three
layers and it was selected the "avoid intersections" option, then, when I
added new digitized polygons, they were splitted or deleted (as you tell)
because new polygons were intersecting marked layers in snapping options.
It fixed when new digitizing shape was the one marked (of course to avoid
intersections between her elements) .

Yes it was something simple, my foul. Is it not same trouble?. If so, Check
it in "Configuration  --> Snapping options --> Change the Self-assembling
mode to "advanced" and be sure that "avoid intersections" is marked in your
target layer only.

Cheers,

Carlos Cerdán

2016-02-02 20:57 GMT-05:00 Springfield Harrison <stellargps at gmail.com>:

> Hello Group,
>
>         Am using QGIS 2.10.1 and have done so without significant
> problems for many months.  I am attempting to create simple polygons in a
> shapefile by direct vertex entry or copying polygons from another shapefile
> layer and pasting them into the active layer.
>
>         In almost every case, these features disappear.  There is an
> entity entry in the attribute table but there are no polygons created.  In
> one case a polygon was created but it was not the shape that I digitized;
> no more polygons could be created although the process for doing so appears
> to be working.  No error messages were created.  The CRS for the project
> and the shapefile are the same.
>
>         The shapefile can be opened in another GIS but has no content.
>
>         Here are some product details:  QGIS version  2.10.1-Pisa  QGIS
> code revision  d20c5b7 <https://github.com/qgis/QGIS/commit/d20c5b7>
>
>         Thanks very much for any help you can render, Cheers . . . . . .
> . . Springfield Harrison
>
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